Attachment_C__Equipment_Specifications.pdf

Equipment Specifications

TECHNICAL SPECIFICATIONS

15KV – PMH SWITCHGEAR

1. SCOPE

1.1 This specification applies to the furnishing of PMH 4, 6, 9, 10, 11 and 13 Metal-Enclosed Power Switchgear, of the Metal-Enclosed Interrupter type, for switching a three-phase source and load tap(s). Switching and tap arrangement will be specified elsewhere.

1.2 Switchgear is intended for use on a 15kV class, three-phase, 60 hertz, grounded neutral, underground distribution system.

1.3 The load will be single-phase and three-phase underground distribution transformers serving public use facilities that require high reliability.

2. GENERAL

2.1 Except as modified by this specification, the switchgear furnished shall comply with the material and testing requirements of the latest revisions of the following standards:

IEEE Standard 27 ANSI Standard C37.20 ANSI Standard C57.12.28 NEMA Standard SG.5

2.2 The complete assembly shall be integrally designed and produced by the manufacturer of the basic switching components, and the manufacturer shall be solely responsible for the performance of the basic switch components as well as the complete integrated assembly.

Note that rivet fastening techniques are unacceptable and not to be utilized. All fasteners shall be of nut and bolt type or welded.

2.3 All components of the switchgear shall be completely factory assembled and tested. The manufacturer shall provide sufficient notice to allow Utility representatives to inspect the switchgear during manufacture, testing, and prior to shipping if requested. Certified test reports and quality control documents shall be provided upon request.

3. RATING

3.1 Switchgear assembly:

1. Rated Nominal Voltage(kV): 14.4

2. Rated Maximum Voltage(kV): 17

3. Rated Continuous Current(Amperes,RMS): 600

4. Rated Momentary Current(Amperes,RMS,Asym): 20,000

5. Power Frequency Withstand Voltage(kV): 60

6. Basic Insulation Level (BIL)(kV): 95

3.2 Load Interrupter Switches:

1. Rated Continuous Current(Amperes,RMS): 600

2. Rated Interrupting Current(Amperes RMS): 600

3. Rated Short-Circuit Current

Momentary(Amperes,RMS,Asym): 22,400 Three-Second (Amperes, RMS, Asym): 12,500

4. Power Frequency Withstand Voltage(kV): 60

5. Two-Time, Fault-Closing, Duty-Cycle @ Rated Maximum Voltage

Momentary(Amperes,RMS,Asym): 22,400 Three-Second (Amperes, RMS, Asym): 12,500

3.3 Integral Load Break Fuses:

1. Rated Continuous Current(Amperes,RMS): 200

2. Rated Interrupting Current(Amperes,RMS): 200

3. Rated Short-Circuit Current

Momentary(Amperes,RMS,Asym): 20,000 Three-Second (Amperes, RMS, Asym): 12,500

4. Fault-Closing, Duty-Cycle @ Rated Maximum Voltage One-Time(Amperes,RMS,Asym): 20,000 Two-Time(Amperes, RMS, Asym): 12,500 Short Circuit Rating, (Amperes,RMS Sym):14,000

4. SWITCHES

4.1 All switches shall be provided with quick-make and quick-break mechanisms.

4.2 Switch mechanisms shall be group operated from outside the cabinet.

5. NON-ELECTRONIC FUSES AND MOUNTINGS

5.1 Fuse holders shall be designed with an exhaust control device suitable for enclosed applications and shall accept "E" type fuses manufactured by the S&C Electric Company.

5.2 Fuse mounting disconnects shall be quick-make and quick-break mechanisms.

6. ELECTRONIC (FAULT FILTER) FUSES AND MOUNTINGS

6.1 Fuses and fuse holders shall be designed for 600 Amp continuous, and shall be of non-loadbreak design.

7. INSULATING MEDIUM

7.1 Entire switchgear shall be air-insulated.

8. BUSSES

8.1 All busses shall be of copper or aluminum.

8.2 All joints shall have suitable hardware and treatment to prevent harmful oxidation and loss of optimum contact pressure.

8.3 Busses shall be cut square and fitted square and uniformly. Bolt holes shall be centered and drilled so that the buss connections are square and well fitted with no undue tension or pressure exerted on the buss members due to misaligned holes.

8.4 Busses shall be suitably supported along entire length by properly designed and tested insulators. Such that a sure fitting assembly will withstand the electrical and mechanical forces associated with the maximum rated withstand fault.

9. GROUNDING

9.1 Each switch terminal, each fuse terminal and each compartment ground terminal shall have a stud for attaching working grounds that use hot line clamps.

9.2 Studs shall be located in such a manner that the clamps may be readily applied or removed with a "hotstick."

9.3 Studs shall be capable of carrying the fault duty of the switchgear.

10. BARRIERS

10.1 Each switch and fuse shall have a removable front barrier which will prevent inadvertent contact with live parts and which can be lifted out and reinserted into the open gap when the switch is open or the fuse is in the disconnect position.

10.2 Barriers must have a visual check window panel such that switches can be checked with barriers in their normal position.

10.3 All phase separation panels and barriers shall be of inert material.

10.4 The permanent connection between non-removable barriers and other panels, etc. shall be accomplished using nuts bolts. Pop rivets are unacceptable.

11. INTERLOCKS

All switches shall have means of padlocking in the open position.

12. ENCLOSURE

12.1 Switchgear cabinet shall be constructed to provide adequate space, volume and strength for fuse handling, fuse exhaust and venting, and shall withstand all pressure build-up during fault interruption without permanent distortion or damage to any portion of the structure.

12.2 Cabinets shall be constructed of a minimum of 11 gauge hot-rolled, pickled and oil steel sheet.

12.3 All access doors shall have a stainless steel latch and hasp designed to utilize standard 5/16 inch shank padlock. Door hinges and hinge pins to be stainless steel. Doors shall have a stainless steel three-point latch system. Doors shall be raintight.

12.4 Ventilating or other openings in equipment shall be so designed that foreign objects inserted through these openings shall be deflected from energized parts. The combined effects of the venting shall provide a chimney effect across wide temperature and humidity variations found in Florida. The vents shall keep moisture from condensing in the cabinet when the cabinet is utilized with pit type construction.

12.5 Equipment shall be so designed that exposed nuts or bolts cannot be readily removed, permitting access to live parts. Cable entrance shall be from the bottom and adaptable for use with padmount type terminations or stress cones.

12.6 Switch operating handle shall be stored inside locking switch hub pockets.

12.7 Enclosure finish shall be Munsell 7 GY 3.29/1.5 olive green, and shall be finished in accordance with ANSI C57.12.28. All underside steel surfaces shall receive a corrosion-resistant undercoating.

12.8- Mounting Base spacer when requested shall be made of 12 gauge 304L stainless steel

13. SURGE ARRESTER MOUNTING BRACKET.

Each switch compartment shall be equipped with a mounting bracket for base mounted surge arresters. Each bracket shall support 3-Single Phase Arresters.

14. WARNING AND DANGER LABELS

Warning and Danger labels shall be in accordance with the latest NEMA and ANSI (ex. NEMA 260 and ANSI Z535.4), and shall be placed as follows:

14.1 All external doors (or set of double doors) shall be provided with warning label (per OUC stock# 012-18093; Uticom cat# U7010WWN-OUC-FL).

14.2 The inside of each door shall have a Danger – “Hand Shock” label (per OUC stock# 012- 18092). Additional text shall further indicate that operating personnel must know and obey the employer's work rules, know the hazards involved, and use proper protective equipment and tools to work on this equipment.

14.3 A Warning/Danger label shall be placed on the outside of each dual-purpose barrier (Per S&C Drawing No. G-6253) indicating that barriers shall not be left between open gap of switch or fuse for extended periods of time.

15. SHOP DRAWING

Each bidder shall submit overall physical dimensions of the proposed units with this bid. Final shop drawings shall be submitted to Standards department within thirty days after award of bid for final approval.

16. NAMEPLATE

Nameplates of corrosion resistant material shall be provided with the following information:

Manufacturer, Catalog #, Date of manufacture, Serial #, Equipment Ratings, and type of enclosure material supplied.

17. SIZE & MOUNTING

17.1 Switchgear shall be of a compatible size to fit existing switchgear mounting pit.

Equipment tie downs shall be supplied to anchor switchgear to the mounting pit.

STYLE PIT DIMENSIONS Inches (front x side) PMH-4 (33-37 Max and 36-40 Min)

PMH-6 (65-70 Max and 59-66 Min) PMH-9 (65-70 Max and 59-66 Min) PMH-10 (65-70 Max and 59-66 Min) PMH-11 (65-70 Max and 59-66 Min) PMH-13 (65-70 Max and 59-66 Min)

18. CIRCUIT CONFIGURATIONS

PMH-4 PMH-6 PMH-9

PMH-10 PMH-11 PMH-13

25KV – PMH SWITCHGEAR

1. SCOPE

1.1 This specification applies to the furnishing of PMH 4, 5, 9, 10, 11, and 12 Metal-Enclosed Power Switchgear, of the Metal-Enclosed Interrupter type, for switching a three-phase source and load tap(s). Switching and tap arrangement will be specified elsewhere.

1.2 Switchgear is intended for use on a 26.4kV, three-phase, 60 hertz, grounded neutral, underground distribution system.

1.3 The load will be single-phase and three-phase underground distribution transformers serving public use facilities that require high reliability.

2. GENERAL

2.1 Except as modified by this specification, the switchgear furnished shall comply with the material and testing requirements of the latest revisions of the following standards:

IEEE Standard 27 ANSI Standard C37.20 ANSI Standard C57.12.28 NEMA Standard SG.5

2.2 The complete assembly shall be integrally designed and produced by the manufacturer of the basic switching components, and the manufacturer shall be solely responsible for the performance of the basic switch components as well as the complete integrated assembly.

Note that rivet fastening techniques are unacceptable and not to be utilized. All fasteners shall be of nut and bolt type or welded.

3.3 All components of the switchgear shall be completely factory assembled and tested. The manufacturer shall provide sufficient notice to allow utility representatives to inspect the switchgear during manufacture, testing, and prior to shipping if requested. Certified test reports and quality control documents shall be provided upon request.

3. RATING

3.1 Switchgear assembly:

1. Rated Nominal Voltage(kV): 25

2. Rated Maximum Voltage(kV): 27 (Tested to 29Kv)

3. Rated Continuous Current(Amperes,RMS): 600

4. Rated Momentary Current(Amperes,RMS,Asym): 20,000

5. Power Frequency Withstand Voltage(kV): 60

6. Basic Insulation Level (BIL)(kV): 125

3.2 Load Interrupter Switches:

1. Rated Continuous Current(Amperes,RMS): 600

2. Rated Interrupting Current(Amperes RMS): 400

3. Rated Short-Circuit Current

Momentary(Amperes,RMS,Asym): 20,000 Three-Second (Amperes,RMS,Sym): 12,500

4. Power Frequency Withstand Voltage(kV): 60

5. Two-Time, Fault-Closing, Duty-Cycle @ Rated Maximum Voltage

Momentary(Amperes,RMS,Asym): 20,000 Three-Second(Amperes,RMS,Sym): 12,500

3.3 Integral Load Break Fuses:

1. Rated Continuous Current(Amperes,RMS): 200

2. Rated Interrupting Current(Amperes,RMS): 200

3. Rated Short-Circuit Current Momentary(Amperes,RMS,Asym): 20,000 Three-Second(Amperes,RMS,Asym): 12,500

4. Fault-Closing, Duty-Cycle @ Rated Maximum Voltage One-Time(Amperes,RMS,Asym): 20,000 Two-Time(Amperes,RMS,Asym): 12,500

4. SWITCHES

4.1 All switches shall be provided with quick-make and quick-break mechanisms.

4.2 Switch mechanisms shall be group operated from outside the cabinet.

5. NON-ELECTRONIC FUSES AND MOUNTINGS

5.1 Fuse holders shall be designed with an exhaust control device suitable for enclosed applications and shall accept "E" type fuses manufactured by the S&C Electric Company.

5.2 Fuse mounting disconnects shall be quick-make and quick-break mechanisms.

6. ELECTRONIC (FAULT FILTER) FUSES AND MOUNTINGS

6.1 Fuses and fuse holders shall be designed for 600 Amp continuous, and shall be of non-loadbreak design.

7. INSULATING MEDIUM

7.1 Entire switchgear shall be air-insulated.

8. BUSSES

8.1 All busses shall be of copper or aluminum.

8.2 All joints shall have suitable hardware and treatment to prevent harmful oxidation and loss of optimum contact pressure.

8.3 Busses shall be cut square and fitted square and uniformly. Bolt holes shall be centered and drilled so that the buss connections are square and well fitted with no undue tension or pressure exerted on the buss members due to mis-measured holes.

8.4 Busses shall be suitably supported along length by properly designed and tested insulators so as to provide a sure fitting assembly that will withstand the electrical and mechanical forces associated with the maximum fault that the equipment is rated to withstand.

9. GROUNDING

9.1 Each switch terminal, each fuse terminal and each compartment ground terminal shall have a stud for attaching working grounds that use hot line clamps.

9.2 Studs shall be located in such a manner that the clamps may be readily applied or removed with a "hotstick."

9.3 Studs shall be capable of carrying the fault duty of the switchgear.

10. BARRIERS

10.1 Each switch and fuse shall have a removable front barrier which will prevent inadvertent contact with live parts and which can be lifted out and reinserted into the open gap when the switch is open or the fuse is in the disconnect position.

10.2 Barriers must have a visual check window panel such that switches can be checked with barriers in their normal position.

10.3 All phase separation panels and barriers shall be of inert material.

10.4 The permanent connection between non-removable barriers and other panels, etc. shall be accomplished using nuts bolts. Pop rivets are unacceptable.

11. INTERLOCKS

All switches shall have means of padlocking in the open position.

12. ENCLOSURE

12.1 Switchgear cabinet shall be constructed to provide adequate space, volume and strength for fuse handling, fuse exhaust and venting, and shall withstand all pressure build-up during fault interruption without permanent distortion or damage to any portion of the structure.

12.2 Cabinets shall be constructed of a minimum of 11 gauge hot-rolled, pickled and oil steel sheet .

12.3 All access doors shall have a stainless steel latch and hasp designed to utilize standard 5/16 inch shank padlock. Door hinges and hinge pins to be stainless steel. Doors shall have a stainless steel three point latch system. Doors shall be raintight.

12.4 Ventilating or other openings in equipment shall be so designed that foreign objects inserted through these openings shall be deflected from energized parts. The combined effects of the venting shall provide a chimney effect across wide temperature and humidity variations found in Florida. The vents shall keep moisture from condensing in the cabinet when the cabinet is utilized with pit type construction .

12.5 Equipment shall be so designed that exposed nuts or bolts cannot be readily removed, permitting access to live parts. Cable entrance shall be from the bottom and adaptable for use with padmount type terminations or stress cones.

12.6 Switch operating handle shall be stored inside locking switch hub pockets.

12.7 Enclosure finish shall be Munsell 7 GY 3.29/1.5 olive green, and shall be finished in accordance with ANSI C57.12.28. All underside steel surfaces shall receive a corrosion-resistant undercoating.

12.8 Mounting Base spacer when requested shall be made of 12 gauge 304L stainless steel.

13. SURGE ARRESTER MOUNTING BRACKET.

Each switch compartment shall be equipped with a mounting bracket for base mounted surge arresters. Each bracket shall support 3-Single Phase 21kv Arresters.

14. WARNING AND DANGER LABELS

Warning and Danger labels shall be in accordance with the latest NEMA and ANSI (ex. NEMA 260 and ANSI Z535.4), and shall be placed as follows:

14.1 All external doors (or set of double doors) shall be provided with warning label (per OUC stock# 012-18093; Uticom cat# U7010WWN-OUC-FL).

14.2 The inside of each door shall have a Danger – “Hand Shock” label (per OUC stock# 012- 18092). Additional text shall further indicate that operating personnel must know and obey the employer's work rules, know the hazards involved, and use proper protective equipment and tools to work on this equipment.

14.3 A Warning/Danger label shall be placed on the outside of each dual-purpose barrier (Per S&C Drawing No. G-6253) indicating that barriers shall not be left between open gap of switch or fuse for extended periods of time.

15. SHOP DRAWING

Each bidder shall submit overall physical dimensions of the proposed units with this bid. Final shop drawings shall be submitted to the Standards Department within thirty days after receipt of a purchase order for final approval.

16. NAMEPLATE

Nameplates of corrosion resistant material shall be provided with the following information:

Manufacturer, Catalog #, Date of manufacture, Equipment Ratings and Type of cabinet material supplied

17. SIZE & MOUNTING

Switchgear shall be of a compatible size to fit existing JEA switchgear mounting pit. Equipment tie downs shall be supplied to anchor switchgear to the mounting pit.

STYLE PIT DIMENSIONS

PMH-4 (47x58 Max and 41x52 Min) PMH-5 (47x58 Max and 41x52 Min) PMH-9 (84x84 Max and 76x76 Min) PMH-10 (84x84 Max and 76x76 Min) PMH-11&12 (84x84 Max and 76x76 Min)

18. CIRCUIT CONFIGURATIONS

PMH-4 PMH-5 PMH-9 PMH-10

PMH-11 PMH-12

15KV – PME SWITCHGEAR

1.0 Scope

1.1 This specification covers the electrical and mechanical requirements for the manufacture and delivery of Type 9, Type 11, Type 12, Type 6 and Type 10 air insulated, pad mounted, deadfront switchgear.

Type 9 switchgear consists of 4 compartments with 2 compartments containing-gang operated three-phase 600 ampere interrupter switches and 2 compartments containing-three phase, single pole fuses. The switchgear configuration, compartment designations and dimensions are shown in Figure 1.

Type 11 switchgear consists of 4 compartments with 3 compartments containing gang operated three-phase 600 ampere interrupter switches and 1 compartment containing three-phase single pole fuses. The switchgear configuration, compartment designations and dimensions are shown in Figure 2.

Type 12 switchgear consists of 4 compartments with 1 compartment containing gang operated three phase 600 ampere interrupter switches and 3 compartments containing three phase single pole fuses. The switchgear configuration, compartment designation and dimensions are shown if Figure 3.

Type 6 switchgear consists of 3 compartments with 2 compartments containing gang operated three phase 600 ampere interrupter switches and 1 compartment containing three phase, single pole fuses. The switchgear configuration, compartment designations and dimensions are shown in Figure 4.

Type 10 switchgear consists of 4 compartments with 4 compartments containing gang operated three-phase 600 ampere interrupter switches. The switchgear configuration, compartment designations and dimensions are shown in Figure 5.

1.2 This switchgear is intended for use on 15 kV class, 60 Hz, grounded-wye electric distribution systems. The switchgear will be installed outdoors under varying climatic conditions in the State of Florida.

1.3 The switchgear will be designed for use in sectionalizing and protecting underground feeders, subloops, single phase and three-phase laterals as well as protecting and switching single-phase and three-phase transformers.

2.0 General

2.1 Standards. Unless otherwise indicated the switchgear shall comply with the material and testing requirements of the latest revision of all applicable ANSI, NEMA and IEEE Standards.

2.2 The padmount switchgear shall be manufactured in accordance with drawings and one-line diagrams shown in Figure 1, Figure 2 and Figure 3 and shall conform to these specifications.

2.3 The switchgear shall consist of a single self-supporting enclosure, containing three phase gang operated interrupter switches and three phase sets of single pole load break fuses with the necessary accessory components all completely factory-assembled and operationally checked The fuses and interrupter switches shall be enclosed within an inner grounded steel compartment for electrical isolation and for protection from contamination.

2.4 The complete assembly shall be integrally designed and produced by the manufacturer of the basic switch components, and the manufacturer shall be solely responsible for the performance of the basic switch components as well as the complete integrated assembly. Rivet fastening techniques are unacceptable and are not to be utilized. All fasteners shall be of nut and bolt type or welded.

2.5 All components of the switchgear shall be completely factory assembled and tested.

The manufacturer shall provide sufficient notice to allow representatives to inspect the switchgear during manufacture, testing and prior to shipment if requested.

2.6 The manufacturer shall furnish, upon request, certification of ratings of the basic switch and fuse components and/or the integrated padmount gear assembly consisting of the switch and fuse components in combination with the enclosure. This certification of the integrated unit shall include testing the padmount gear to the fault close requirements of the specification to assure the bus support system and components are adequate.

3.0 Ratings

3.1 Switchgear Assembly

Rated Nominal Voltage (kV) 14.4 Rated Maximum Voltage (kV): 17.0 kV Rated Continuous Current (Amperes, RMS): 600 Rated Momentary Current (Amperes, RMS, Asymmetrical): 20,000 Basic Insulation Impulse Level (BIL) (kV) 95 One Minute Withstand (60 Hz) (kV) 35

3.2 Interrupter Switches

Rated Continuous Current (Amperes, RMS): 600 Rated Interrupting Current (Amperes, RMS) 600

(Amperes, RMS, Asymmetrical): 22,400 Basic Insulation Impulse Level (BIL) (kV) 95 One Minute Withstand (60 Hz) (kV) 35

3.3 Load Break Fuses

Maximum Current (Fuse Designation) 200 Std, 200E, 200K Short Circuit Ratings (Amperes, RMS Symmetrical) 14,000 Short Circuit Ratings (MVA Three Phase Symmetrical at Rated Voltage):

3.4 The ratings of the Interrupting Switches and Load Break fuses shall be equal or exceed the momentary and two-time duty cycle capacity of the complete padmount switchgear.

4.0 Design and Construction

4.1 Enclosure Design

(1) Switchgear shall be constructed to provide adequate space, volume and strength for fuse handling, fuse exhaust and venting, and shall withstand all pressure build-up during fault interruption without permanent distortion or damage to any portion of the structure.

(2) The switchgear enclosure shall be of unitized construction (not structural frame and bolted sheet) to maximize strength, minimize weight and inhibit corrosion

(3) The switchgear shall be constructed of a minimum of 11 gauge hot-rolled, pickled and oiled sheet steel. All structural joints and butt joints shall be welded and the external seams shall be ground flush and smooth. A welding process shall be employed that eliminates alkaline residues and minimizes distortion and spatter.

(4) To guard against unauthorized or inadvertent entry, the switchgear construction shall not utilize any externally accessible hardware.

(5) The base shall consist of continuous 90-degree flanges, turned inward and welded at the corners, for bolting to a concrete pad.

(6) Ventilating or other openings in the switchgear shall be designed such that foreign objects inserted through the openings shall be deflected from any energized parts.

(7) Gasketing between the roof and the enclosure shall guard against entry of water and air-borne contaminants and shall discourage tampering or insertion of foreign objects.

(8) A heavy coat of insulating "no-drip compound" shall be applied to the inside surface of the roof to minimize condensation of moisture.

(9) An internal steel-enclosed compartment shall encase the interrupter switches and fuses for electrical isolation and protection from contamination. The compartment shall have a galvanized steel sheet floor to exclude foliage and animals. The floor shall have screened drain vents to allow drainage if the enclosure is flooded. The top of the compartment shall be gasketed to provide sealing with the enclosure roof.

(10) Insulating barriers of NEMA GPO3-grade fiberglass reinforced polyester shall be provided for each interrupter switch where required to achieve BIL ratings.

Additional insulating barriers of the same material shall isolate the tie bus.

(11) Lifting tabs shall be removable. Sockets for the lifting tab bolts shall be blind-tapped. A protective material shall be placed between the lifting tabs and the enclosure to help prevent corrosion by protecting the finish against scratching by the tabs. To further prevent corrosion, the protective material shall not absorb moisture.

(12) The enclosure shall be provided with an instruction manual holder.

(13) The roof shall be designed and constructed to aid in water runoff.

(14) All door hinges, hinge pins and hardware shall be stainless steel.

(15) Mounting Base spacer when requested shall be made of 12 gauge 304L stainless steel

4.2 Doors

(1) Doors shall be constructed of a minimum of 11 gauge hot-rolled, pickled and oiled sheet steel. All structural joints and butt joints shall be welded and the external seams shall be ground flush and smooth. A welding process shall be employed that eliminates alkaline residues and minimizes distortion and spatter.

(2) The door openings shall have 90-degree flanges, facing outward that shall provide strength and rigidity as well as deep overlapping between doors and door openings to guard against water entry.

(3) Doors shall be hinged at the side to swing open with minimum effort. Doors hinged at the top shall not be allowed.

(4) Each door or each set of double doors shall be equipped with an automatic three-point latching system. The latching mechanism shall be spring-loaded and shall latch automatically when the door is closed. All latch points shall latch at the same time to preclude partial latching. A penta-head tool to unlatch the door and recharge the spring for the next operation shall operate the three point latching system. The latching mechanism shall have provisions for padlocking and shall have a means to protect the padlock shackle from tampering. It shall not be possible to unlatch the mechanism until the padlock is removed. It shall not be possible to insert the padlock until the mechanism is completely latched closed.

(5) Each door shall be provided with a galvanized or stainless steel door holder located above the door opening. The holder shall be hidden from view when the door is closed and it shall not be possible for the holder to swing inside the enclosure.

4.3 Finish

(1) Full coverage at joints and blind areas shall be achieved by processing the switchgear enclosures independently of components such as doors and roofs before assembly into the unitized structures.

(2) All exterior seams shall be sanded or ground smooth for neat appearances.

(3) To remove oils and dirt, and to form a chemically and anodically neutral conversion coating to improve the finish-to-metal bond, and to retard underfilm propagation of corrosion, all surfaces shall undergo a chemical cleaning and phosphatizing process before any protective coating are applied.

(4) The finishing system shall be applied without sags or runs.

(5) Blemishes shall be carefully touched up by hand to restore the protective integrity of the finish.

(6) The finish shall be the color Munsell No. 7GY3.29/1.5, dark green

(7) The manufacturer shall provide, upon request, certification that representative test panels, protected by the manufacturer's finish system has passed the following tests:

a) Salt Spray (relates to coastal environments and/or contaminated atmospheres and fertilizers). 4000 hours of exposure to salt-spray testing per ASTM B 117 with underfilm corrosion not to extend more than 1/32" from the scribe as evaluated per ASTM D 1645, Procedure A, Method 2 (scraping); and Loss of adhesion from bare metal not to extend more than 1/8" from the scribe.

b) Humidity (relates to areas with high humidity). 1000 hours of humidity testing per ASTM D 4585 using the Cleveland Condensing Type Humidity Cabinet with no blistering as evaluated per ASTM D 714.

c) Ultra-Violet Weathering Test (relates to exposure to sunlight and rainfall, loss of gloss, color fading and chalking). 500 hours of accelerated weathering testing per ASTM G 53 using lamp UVB-313 with no chalking as evaluated per ASTM D 659, and no more than 10% reduction of gloss as evaluated per ASTM D 523.

d) Crosshatch adhesion testing (relates to adhesion after scratching the finish) per ASTM D 3359 Method B with no loss of finish.

e) Impact (relates to transit and handling damage and abuse by the public).

160-inch-pound impact adhesion testing per ASTM D 2794 with no chipping or cracking.

f) Oil resistance testing (relates to probable contact with mineral oil) consisting of a 72-hour immersion bath in mineral oil with no shift in color, no streaking, no blistering, and no loss of hardness.

g) Abrasion testing (relates to wear encountered during installation). 3000 cycles of abrasion testing per ASTM 4060 with no penetration to the substrate.

h) Water Resistance (relates to rainfall of dew). Immerse a test panel in distilled water for 3 days at room temperature. There should be no apparent changes such as blistering, color shift, loss of hardness or streaking.

4.4 Interrupter Switches

(1) Interrupter switches shall have a two-time duty-cycle fault-closing rating equal to or exceeding the short-circuit rating of the pad-mounted gear. These ratings define the ability to close the interrupter switch twice against a three-phase fault with asymmetrical current in at least one phase equal to the rated value, with the switch remaining operable and able to carry and interrupt rated current.

Tests substantiating these ratings shall be performed at maximum voltage with current applied for at least 10 cycles. Certified test abstracts establishing such ratings shall be furnished upon request.

(2) Interrupter switches shall be operated by means of an externally switch-operating hub. The switch-operating hub shall be located within a recessed pocket mounted on the side of the pad-mounted gear enclosure. The switch-operating-hub pocket shall include a padlockable stainless-steel access cover that shall incorporate a hood to protect the padlock shackle from tampering. Stops shall be provided on the switch-operating hub to prevent over travel and thereby guard against damage to the interrupter switch quick-make quick-break mechanism. Labels to indicate switch position shall be provided in the switch-operating-hub pocket.

(3) Each interrupter switch shall be provided with a folding switch-operating handle.

The switch-operating handle shall be secured to the inside of the switch-operating-hub pocket by a brass chain. The folded handle shall be stored behind the closed switch operating-hub access cover.

(4) Interrupter switches shall utilize a quick-make quick-break mechanism installed by the switch manufacturer. The quick-make quick-break mechanism shall be integrally mounted on the switch frame, and shall swiftly and positively open and close the interrupter switch independent of the switch-operating-hub speed.

(5) Each interrupter switch shall be completely assembled and adjusted by the switch manufacturer on a single rigid mounting frame. The frame shall be of welded steel construction such that the frame intercepts the leakage path, which parallels the open gap of the interrupter switch to positively isolate the load circuit when the interrupter switch is in the open position.

(6) Interrupter switch contacts shall be backed up by stainless-steel springs to provide constant high contact pressure.

(7) Interrupter switches shall be provided with a single blade per phase for circuit closing including fault closing, continuous current carrying, and circuit interrupting. Spring-loaded auxiliary blades shall not be permitted. Interrupter switch blade supports shall be permanently molded in place in a unified insulated shaft constructed of the same cycloaliphatic epoxy resin as the insulators.

(8) Circuit interruption shall be accomplished by use of an interrupter that is positively and inherently sequenced with the blade position. It shall not be possible for the blade and interrupter to get out of sequence. Circuit interruption shall take place completely within the interrupter, with no external arc or flame.

Any exhaust shall be vented in a controlled manner through a deionizing vent.

4.5 Fuse Side

(1) Fuse mountings shall be enclosed in an inner steel compartment and shall be provided with bushing wells rated for a 200E fuse with loadbreak elbow connection.

(2) Switchgear shall be provided with S&C type SME-20 fuses rated for up to a

200E fuse. Fuse Holders shall be supplied with the switchgear.

(3) Each fuse mounting shall be an integral part of a fuse handling mechanism that does not allow access to the fuse until the elbow for that fuse has been disconnected. To gain access to a fuse it shall be necessary to:

(i) Disconnect the elbow for that fuse and move it to the appropriate parking stand.

(ii) Actuate a mechanical interlock to unlock the fuse-access panel. It must not be possible to disengage this interlock before the elbow is moved.

(iii) Unlatch and then pivot the fuse-access panel to electrically isolate the fuse so that it can be removed from the fuse mounting with a shotgun stick. Removal and installation of the SME-20 fuse shall be accomplished with the fuse in a vertical position.

(4) An integral fuse-access panel shall cover the live component compartment in both the open and closed positions to help prevent inadvertent access to high voltage. The S&C Transfuser (tm) mounting fuse handling mechanism is the accepted and approved mechanism.

(5) All mechanism parts shall be painted or made of corrosion resistant materials, or otherwise be protected from corrosion. All latches and pivots shall be stainless steel with nylon bushings.

(6) Cable guides shall be provided in each termination compartment for a set of fuses, to prevent cables from interfering with rotation of the fuse-access panel.

4.6 High Voltage Bus

(1) Bus and interconnections shall consist of either aluminum bar of 56% IACS conductivity (minimum) or copper.

(2) Bus and interconnections shall withstand the stresses associated with short-circuit currents up through the maximum rating of the pad-mounted gear.

(3) Bolted aluminum-to-aluminum connections shall be made with a suitable number of non-corrosive bolts and with two Belleville spring washers per bolt, one under the bolt head and one under the nut. Bolts shall be tightened to the recommended torque to assure a good electrical connection.

(4) Before installation of the bus, all electrical contact surfaces shall first be prepared by machine abrading to remove any aluminum-oxide film. Immediately after this operation, the electrical contact surfaces shall be coated with a uniform coating of an oxide inhibitor and sealant.

(5) Tie bus, where furnished, shall consist of continuous, one-piece sections of aluminum bar with no intermediate splices. Flexible braid or cable shall not be used.

(6) Busses shall be cut square and fitted square and uniformly. Bolt holes shall be centered and drilled so that the buss connections are square and well fitted with no undue tension or pressure exerted on the buss members due to mis-measured bolts.

(7) Busses shall be supported along their length by properly designed and tested insulators so as to provide a sure fitting assembly that will withstand the electrical and mechanical forces associated with the maximum fault current that the switchgear is rated to withstand. Buss that is not properly supported shall be deemed to be unacceptable and will result in rejection and return of the equipment.

4.7 Grounding

(1) A ground-connection pad shall be provided in each termination compartment of the switchgear.

(2) The ground-connection pad shall be constructed of 1/4" thick steel, which shall be nickel-plated and welded to the enclosure, and shall have a short-circuit rating equal to that of the pad-mounted gear.

(3) Ground-connection pads shall be coated with a uniform coating of an oxide inhibitor and sealant prior to shipment.

(4) A 3/8" diameter copper rod connected to the ground-connection pad shall be provided in each termination compartment for switches and each termination compartment for bus. The rod shall extend across the full width of each compartment to allow convenient grounding of cable concentric neutrals and accessories, and shall have a short-circuit rating equal to that of the pad-mounted gear.

(5) Continuous copper ground bus shall be provided across the full width of each termination compartment for fuses. For each fuse mounting, there shall be a ground ring made of 3/8" diameter copper rod bolted to the ground bus and placed to allow convenient grounding of cable concentric neutrals and accessories. Ground rings and bus shall have a short-circuit rating equal to that of the pad-mounted gear.

4.8 Cable Termination Compartments

(1) Cable Termination Compartments shall house bushings and bushing wells.

The bushing and bushing wells shall be mounted on the interior walls at or near the height of 33 inches above the enclosure base.

(2) Cable Termination Compartments for 600 ampere continuous rated bushings shall be of adequate depth to accommodate two 600 ampere elbows mounted piggy back, encapsulated surge arrester or grounding elbows mounted on 600 ampere elbows having 200 ampere interfaces or other similar accessory combinations without the need for extending the enclosure.

(3) Cable Termination Compartments for bushing wells rated 200 amperes continuous shall be of adequate depth to accommodate 200 ampere elbows mounted on portable feedthroughs or stand-off insulators or other accessory

(4) Cable Termination Compartments shall be provided with one parking stand for each bushing or bushing well. The parking bushing shall be located immediately adjacent to the associated bushing or bushing well and shall accommodate standard feedthroughs and stand-off insulators, and other similar accessories.

(5) The interrupter switches Cable Termination Compartments shall have a visible open gap to allow visual verification of the open and closed switch positions. A polycarbonate clear window shall be supplied to provide visual verification of switch position and maintain dead front integrity. The window shall be removable to allow maintenance without disassembling the enclosure.

(6) The fuse cable termination compartment shall be equipped with a set of viewing windows to allow visual inspection of the blown-fuse indicators

4.9 Bushings and Bushing Wells

(1) Bushings and bushing wells shall conform to ANSI/IEEE Standard 386 (ANSI Standard C 119.2).

(2) Bushings and bushing wells shall be mounted in such a way that the semiconductive coating is solidly grounded to the enclosure.

(3) The interrupter switch bushings shall be designed such that it is possible to change out a bushing in the field without disassembling the enclosure

(4) Bushings rated 600 amperes continuous shall have a removable threaded stud so that the bushings are compatible with all 600-ampere elbow systems-those requiring a threaded stud as well as those that do not.

4.10 Insulators

(1) The interrupter-switch and fuse-mounting insulators shall be of a cycloaliphatic epoxy resin system with characteristics and restrictions as follows:

a) Operating experience of at least 15 years under similar conditions.

b) Adequate leakage distance established by test per IEC Publication 507, (latest edition).

c) Adequate strength for short-circuit stress established by test.

d) Conformance with applicable ANSI standards.

e) Homogeneity of the cycloaliphatic epoxy resin throughout each insulator to provide maximum resistance to power arcs. Ablation due to high temperatures from power arcs shall continuously expose more material of the same composition and properties so that no change in mechanical or electrical characteristics takes place because of arc-induced ablation.

Furthermore, any surface damage to the insulators during installation or maintenance of the pad-mounted gear shall expose material of the same composition and properties so that insulators with minor surface damage need not be replaced.

f) Ablative action to ensure non-tracking properties.

g) Each insulator shall be x-rayed to assure it is essentially void free. An alternate testing method may be used by approval

5.0 Labeling

5.1 Warning and Danger Labels

Warning and Danger labels shall be in accordance with the latest NEMA and ANSI (ex.

NEMA 260 and ANSI Z535.4), and shall be placed as follows:

(1) All external doors (or set of double doors) shall be provided with warning label

(per OUC stock# 012-18093; Uticom cat# U7010WWN-OUC-FL).

(2) The inside of each door shall be provided with a Danger – “Hand Shock” label

(per OUC stock# 012-18092). Additional text shall further indicate that operating personnel must know and obey the employer's work rules, know the hazards involved, and use proper protective equipment and tools to work on this

(3) Termination compartments shall be provided with "Danger-Keep

Away-Hazardous Voltage-Will Shock, Burn, or Cause Death" signs.

5.2 Nameplates, Ratings Label and Connection Diagrams

(1) The outside of each door (or set of double doors) shall be provided with a non-corrosive nameplate indicating the manufacturer's name, catalog number, model number, date of manufacture, serial number and the type of material used in the manufacture of the cabinet (i.e. Stainless or mild steel)

(2) The inside of each door (or set of double doors) shall be provided with a ratings label indicating the following: voltage ratings; main bus continuous rating;

short-circuit ratings (amperes rms symmetrical and Mva three-phase symmetrical at rated nominal voltage); the type of fuse and its maximum ampere rating; and interrupter switch ratings including duty-cycle fault-closing and short-time (momentary, amperes rms asymmetrical and one-second, amperes rms symmetrical).

(3) A non-corrosive three-line connection diagram showing interrupter switches, fuses, and bus along with the manufacturer's model number shall be provided on the inside of each door (or set of double doors), and on the inside of each switch-operating-hub access cover.

6.0 Options

6.1 Stainless Steel Enclosure and Doors

(1) The manufacturer shall provide a cost for the following optional switchgear construction. Section 4.1-Enclosure Design; paragraph (3) and Section 4.2- Doors; paragraph (1) shall be modified as follows:

a) 4.1 (3). The switchgear enclosure shall be constructed of a minimum of

12 gauge 304L stainless steel. All exposed metal parts and welds shall be compatible with stainless steel. All structural joints and butt joints shall be welded and the external seams shall be ground flush and smooth. A welding process shall be used that eliminates alkaline residues and minimizes distortion and spatter.

All other requirements in Section 4.1 are applicable.

b) 4.2 (1). Doors shall be constructed of a minimum of 12 gauge 304L stainless steel. All exposed metal parts and welds shall be compatible with stainless steel. All structural joints and butt joints shall be welded and the external seams shall be ground flush and smooth. A welding process shall be used that eliminates alkaline residues and minimizes distortion and splatter.

All other requirements in Section 4.2 are applicable.

(2) Switchgear constructed under this alternate will be located and operated in corrosive atmospheres including heavy salt spray and may be subjected to fertilizer overspray.

6.2 Fuse Storage

(1) The manufacture shall provide a cost adder/deduction for a fuse-storage feature that shall be provided on the inside of each fuse compartment. Each fuse-storage feature shall provide space for storing three spare fuse assemblies, holders or fuse units with end fittings for the SME-20 fuse.

6.3 Fault Indicator Provisions

(1) The manufacturer shall provide a cost adder/deduction for manufacturing the switchgear enclosure with provisions to accommodate one three-phase fault indicator with three single-phase sensor in each switch interrupter cable termination compartments. The provisions should have the capability of being blanked off so as to prevent unauthorized or inadvertent entry or penetration of any foreign objects.

6.4 Alternate Fuse Handling Mechanism

(1) The preferred fuse handling mechanism is the S&C Transfuser mechanism and the manufacturer shall provide a cost for switchgear utilizing this mechanism.

In addition, the manufacturer may provide a cost adder/reduction for an alternate fuse handling mechanism.

6.5 Additional Ventilation Requirements

(1) A minimum of 181 square inches of ventilation shall be provided. This shall be split between vents located along the bottom and along the top of the switchgear. All four sides of the switchgear enclosure shall have vents. The bottom of the lower vents shall be no higher than 12 inches from the bottom of the switchgear enclosure. The top of the vents shall be no lower than 6 inches from the top of the switchgear enclosure. The combined effects of the venting shall provide a chimney effect across wide temperatures ranges and humidity variations found in Florida. The vents shall keep moisture from condensing in the cabinet when the cabinet is utilized with pit type construction.

7.0 Submittal

7.1 Shop drawings showing all details, dimensions and options and as described in this specification shall be submitted and approved in writing prior to the manufacture of the switchgear. Drawings showing the cable and conduit configuration and mounting pad layout shall be provided.

7.2 Cost for the following items shall be submitted for approval

(1) Type 9, 15 kV, Pad mounted, air insulated deadfront switchgear with dimensions as shown in Figure 1 and described in these specifications.

(2) Alternate Type 9, 15 kV, padmount, Air Insulated, Deadfront, Stainless Steel switchgear with dimensions as shown in Figure 1 and the options stated in Section 6.1 and described in these specifications.

(3) Type 11 padmount, 15 kV, air insulated deadfront switchgear with dimensions as shown in Figure 2 and described in these specifications.

(4) Alternate Type 11, 15 kV, padmount, Air Insulated, Deadfront, Stainless Steel switchgear as with dimensions as shown in Figure 2 and the options stated in Section 6.1 and described in these specifications.

(5) Type 12, 15 kV Pad mounted, air insulated deadfront switchgear with dimensions shown in Figure 3 and described in these specifications.

(6) Alternate Type 12, 15 kV, padmount, Air Insulated, Deadfront, Stainless Steel switchgear with dimensions as shown in Figure 3 and the options stated in Section 6.1 and described in these specifications.

(7) Type 6, 15 kV, Pad mounted, air insulated deadfront switchgear with dimensions as shown in Figure 4 and described in these specifications.

(8) Alternate Type 6, 15 kV, padmount, Air Insulated, Deadfront, Stainless Steel switchgear with dimensions as shown in Figure 4 and the options stated in Section 6.1 and described in these specifications.

(9) Type 10, 15 kV, Pad mounted, air insulated deadfront switchgear with dimensions as shown in Figure 5 and described in these specifications.

(10) Alternate Type 10, 15 kV, padmount, Air Insulated, Deadfront, Stainless Steel switchgear with dimensions as shown in Figure 5 and the options stated in Section 6.1 and described in these specifications.

(11) Adders/deductions as stated in Section 6.2, 6.3, 6.4 and 6.5 for item 1 through item 10 above.

Side View Front View

69 - 3/4"

66 - 3/4"75"

15 kV Type 9

10 - 3/4" 10 - 3/4" 10 - 3/4"10 - 3/4"10 - 3/4"10 - 3/4" 5 - 1/4"

33"

12-3/8"8-1/4"8-1/4"12-3/8" 8-1/4" 8-1/4"

4" Typ.

69-1/2"

2-3/4"2-3/4"

-1

/2" 8-

5/8

-3

/4"

3 2 -3

/4"

Location of anchor inserts for 1/2" bolts

(4 plcs.)

Figure 1.

1 2 3 123

123321

S & C type SME - 4Z fusing

Group operated switches

Connection Diagram

Compartment - 3 Compartment - 4

Compartment - 1Compartment - 2

75 - 3/4"

72 - 3/4"75"

15 kV Type 11

12-3/8"8-1/4"8-1/4"12-3/8" 8-1/4" 8-1/4"

4" Typ.

69-1/2"

2-3/4"2-3/4"

-1

/2" 8-

5/8

-3

/4"

-3

/4" 2 0

Location of anchor inserts for 1/2" bolts

(4 plcs.)

Figure 2.

1 2 3 123

123321

S & C type SME - 4Z fusing

Group operated switches

Connection Diagram

33"

5 - 1/4"10 - 3/4" 10 - 3/4"10 - 3/4"8-1/4"12-3/8" 8-1/4" 4" Typ.

69 - 3/4" 66 - 3/4"75"

15 kV Type 12

10 - 3/4" 10 - 3/4" 10 - 3/4"10 - 3/4"10 - 3/4"10 - 3/4" 5 - 1/4"

33"

12-3/8" 8-1/4" 8-1/4"

4".

Typ.

69-1/2"

2-3/4"2-3/4"

-1

/2" 8-

5/8

-3

/4"

-3

/4"

Location of anchor inserts for 1/2" bolts

(4 plcs.)

Figure 3.

1 2 3 123

123321

S & C type SME - 4Z fusing

Group operated switches

Connection Diagram

Compartment - 3 Compartment - 4

10 - 3/4"10 - 3/4"5 - 1/4" 10 - 3/4"

69 - 3/4" 66 - 3/4"75"

15 kV Type 6

69-1/2"

2-3/4"2-3/4"

-1

/2" 8-

5/8

-3

/4"

-3

/4"

Location of anchor inserts for 1/2" bolts

(4 plcs.)

Figure 4.

1 2 3

123321

S & C type SME - 4Z fusing

Group operated switches

Connection Diagram

75 - 3/4"

72 - 3/4"75"

15 kV Type 10

69-1/2"

2-3/4"2-3/4"

-1

/2" 8-

5/8

-3

/4"

-3

/4"

Location of anchor inserts for 1/2" bolts

(4 plcs.)

Figure 5.

Group operated switches

Connection Diagram

Compartment - 2

Compartment - 3

1 2 Compartment - 1

3 3 12

Compartment - 4 1 2 3 3 2 1

25KV PME SWITCHGEAR

1.0 Scope

1.1 This specification covers the electrical and mechanical requirements for the manufacture and delivery of Type 9, Type 11, Type 12, Type 6 and Type 10 air insulated, pad mounted, and deadfront switchgear.

Type 9 switchgear consists of 4 compartments with 2 compartments containing-gang operated three-phase 600 ampere interrupter switches and 2 compartments containing-three phase, single pole fuses. The switchgear configuration, compartment designations and dimensions are shown in Figure 1.

Type 11 switchgear consists of 4 compartments with 3 compartments containing gang operated three-phase 600 ampere interrupter switches and 1 compartment containing three-phase single pole fuses.