140R3024Q0139_Specs_2300_Volt_Switchgear_for_Hoover_Dam_0002.pdf

140R3024Q0139 Combined Synopsis Solicitation

Supply purchase for 2300 Volt Switchgear for Hoover Dam

General introduction:

This is a supply 2300 Volt Switchgear for Hoover Dam. The goal is to be open to all US manufacturers who meet the following requirements. The full voltage non reversing starters are rated at 2300 volts, with (two) 400-amp (minimum) vacuum contactors and one piece for the incoming power. The full voltage none reversing FVNR starters will be used to start government furnished 2300 Volt 150 HP sump pump motors with built in winding temperature RTD’s. The goal is for standard commercial equipment being made with a few modifications for the switches.

Dimension for the Switchgear equipment specifications as follows:

Note: The arrangement may vary depending upon the manufacturer. The total area footprint allowed is

60 inches for the front (front is considered where the breakers rack out and access to the full voltage starters is allowed for wiring and maintenance) with a depth of 38 inches maximum, and with a height from 92 to 96 inches. Floor space is a premium for Hoover Dam, with the addition of two new sump pumps not furnished here in this purchase request. The desired overall floor layout for one full piece of switchgear is 60 inches wide x 38 inches deep per unit switchgear. The Switchgear has the draw out for two 400 amp vacuum contactors, control switches, and relay protection for two full voltage starters with one stacked on top of the other or side by side space permitting, full voltage starter (30 inches deep x 36 inches wide for example). The height isn’t a critical dimension, but 92 to 96 inches is acceptable. One piece of the switchgear is 24 x 30 inches for example for the incoming line power for example. The two sections bolted together as one complete unit is 30 inches deep x 60 inches wide for example. A total of three full sectional piece sections fitting will fit in an area of 60 inches for the front with a depth of 38 inches.

Enclosures:

1. The enclosures for the two medium voltage contactors FVNR shall meet NEMA ICS 6 standards.

The enclosure shall be NEMA 1 type, free standing, and completely front accessible (36 wide x

30 inch deep section for example).

2. The other enclosure which is connected to the above enclosure is (24 inches wide x 30 inches deep for example). The feeder incoming section is used for the incoming line feeder from the customer/government power cable and this section feeds the power via the bus bar to the two

FVNR contactors section.

Submittals – for Review/Approval

1. Master drawing index

2. Front view elevation with dimensions

3. Floor plan with dimensions (60 inches wide x 38 inches deep maximum)

4. Top view dimensions

5. Schematic diagram

6. Nameplate schedule

7. Component list

8. Conduit entry/exit locations

9. Assembly ratings including:

a. Short-circuit rating

b. Voltage

c. Continuous current

d. Basic impulse level: 60kV minimum rating

10. Major component ratings including:

a. Voltage

b. Continuous current

c. Interrupting ratings

11. Cables terminal sizes

12. Descriptive bulletins

13. Product data sheets

14. The government has included a special sheet for the control switch which has four positions.

Extra contact blocks for the switch positions shall be included also. The four positions are as follows: Hand, OFF, PLC AB-SLC 504, and CSB1 SE PLC

Qualifications for Manufacturer:

1. The manufacturer of the assembly shall be the manufacturer of the major components within the assembly.

2. For the equipment specified herein, the manufacturer shall be ISO 9001 or 9002 certified.

3. The manufacturer of this equipment shall have produced similar electrical equipment for a minimum period of five (5) years. The equipment shall be of the latest production not a legacy product that is out of production or one that is in its last year of production. The product must be in the active life cycle.

Operation and Maintenance Manuals.

Equipment operation and maintenance manuals shall be provided with each assembly shipped and shall include instruction leaflets and instruction bulletins for the complete assembly and each major component.

Ratings of the full voltage starters as follows:

1. Starters shall have an integrated interrupting rating with current limiting fuses of 50ka.

2. The entire assembly shall be suitable for application on a power system having a short-circuit capacity of 50kA.

3. The vacuum contactor shall have the following ratings:

7200V Max. 400 Amperes

Max. Interrupting 8500 Amperes

Rated Current – Enclosed 400 Amps

Rated Current – Open 400 Amps

Short Time Current

30 seconds 2400 Amps

1 second 6000 Amps

8.7 ms (.5 cycle) 63dA Peak

Mechanical Life 2.5 million

Electrical Life at rated current 300,000

Impulse Withstand 60kV (1.2 x 50 Micro Sec.)

Construction

1. Isolating switch and contactor assemblies, including current limiting fuses shall be of the component-to-component design with a minimum number of interconnecting cables. The isolating switch shall be easily removed from the enclosure by removing the pin securing the operating rod to the switch and then removing two bolts securing the removal portion of the switch. Line and load cable terminations shall be completely accessible from the front. The isolating switch shall be capable of being locked out by a padlock for lockout tag out purposes.

2. Current limiting power fuses shall be provided with special fatigue proof elements that allow the elements to absorb the expansions and contractions created by the heating and cooling associate with severe cycling as is typical with motor starting. The fuses will include visible fuse condition indicators. The fuses shall incorporate special time/current characteristics for motor service allowing proper coordination with the contractor and overload relay for maximum motor protection. The power fuses shall be Bolt-in and rated for 50 symmetrical kA rating. The fuses shall be sized for the 150 HP sump pump motor provided by the government.

3. The vacuum contactor shall be of the roll-out, stab connection and latched design, rated at 400 amperes with single-break high pressure type main contacts with weld-resistant alloy contact faces. The vacuum contactor contact wear shall be easily checked with the use of a go/go-go feeler gauge.

4. A built-in-test circuit shall be included to permit checking of the starter control and pilot circuit, with high voltage de-energized and isolated, and the contactor in its normal position or in the draw out position. The control circuit shall be capable of being energized through a polarized plug connector from an external 115-volt supply while in the test mode.

5. The low voltage control compartment shall be isolated and barriered from the high voltage area and located behind a separate low voltage access door. The low voltage compartment shall be painted white to increase visibility of components mounted inside the compartment.

6. Each starter cell shall contain a vertical and horizontal low voltage wireway.

Bus works

1. The two FVNR Starters shall be connected by an insulated vertical bus.

2. All bus bars shall be copper tin or silver plated. Bus shall be rated for a minimum of 1000 amps continuous current.

3. A ¼ x 2-inch ground bus shall be provided throughout the entire lineup.

4. The bus bar will feed the other section containing the two FVNR (Full Voltage Non-Reversing) starters.

Wiring/Terminations

1. Control wire shall be UL/CSA approved.

2. Standard control wire shall be 16 or 14 Gauge stranded, tin-plated, dual-rated SIS 90 degrees C.

3. Current transformer circuits shall utilize 12 Gauge wire, with the same characteristics as above.

4. Provide “lug-in” terminal blocks, rated at 600V, 50 amps with “clamping collar.”

5. Wire markers shall be “sleeve” type or equal not handwritten.

6. “Clamping collar” type terminal shall be used to terminate the control wiring. Control transformer circuits shall be provided with ring type terminals where applicable.

7. Ground wire color shall be green yellow stripe.

8. Customer Terminal blocks with wires going to the control switches (status position 24VDC customer power) for the two extra positions shall be provided. The positions are as follows:

Hand, Off, PLC AB-SLC 504, and RTU Cab SE PLC.

9. Customer Terminal blocks for external wiring shall be provided for the customer relays to use for remote starting via the PLC relay contacts. The relays are provided by the customer. If possible room permitting, two inches of din rail, which is unused shall be used by the customer to install the PLC interface relays for remote start devices.

10. One dry contact for breaker tripped via the motor starter relay.

11. Two dry contracts for motor running indication

12. One 4/20milliamp output for the current of the motor.

13. All of the above contacts must be provided on a terminal block for external wiring to the government.

FVNR Starters to be used to start the existing government furnished 150 HP 2300-volt motors:

1. The starters shall be designed to accommodate the existing 150HP vertical sump pump motors of the size and type as follows:

2. The starters shall be non-reversing.

3. Three phase 2300 volts rated at 35 amps.

4. Service Factor is 40 amps.

5. The motor is rated at 150 HP with a RPM of 1780, and 60 Hertz.

6. The service factor is 1.15.

7. The duty of the motor is continuous, and the insulation class is type F.

The following equipment shall be provided for each of the starter type as follows:

1. One-Fixed portion isolating switch with shutter mechanism.

2. One-Removable portion isolating switch (with blown fuse indication).

3. Three clips in Current-limiting power fuses.

4. One-Stab-in three pole main vacuum contactor assembly.

5. One- Control circuit transformer (750 VA @ 2.4KV)

6. Two- Control circuit primary current limiting fuses.

7. One- Control circuit secondary fuse.

8. One- Run test circuit, which an external 120VAC power source can be applied.

9. Four- Electrical interlocks

10. One – three phase current transformer suitable for use with motor protection relay and or electronic meter.

Low Voltage Compartment and Door

1. One- Motor protection Relay

2. One- Interposing control relay

3. One- Set of control circuit terminal blocks.

4. Two-PT’s (potential transformers), open delta

5. Isolation switch viewing window to verify switch position.

6. One – CT (current transformer) shorting block

Motor Protection Relay (Six Total are Provided)

1. One Motor protection relay per starter shall be furnished.

2. An optional URTD (Resistance Temperature Detector) card shall be mounted on the backside of each Motor Protection relay. Or the motor protection relay may have the URTD build into the Motor Protection relay. A total of six one per starter.One motor Protection

Relay per starter shall be provided.

3. Trip circuit monitoring. Relay shall display the reason for tripping.

4. Current readout of the phases shall be available.

5. Current unbalance

6. THD monitoring (Total Hamonic Distortion) of the current

7. Temperature monitoring with the motor protection relay with the URTD card on the back side or built in.

8. TBS (Time between Starts or called Anti-backspin time): Timer counts down preventing the motor starting for a certain time. Our motors require a minimum of 2 minutes between starts.

9. Small digital display

10. A minimum of one analog output (4 to 20ma). The 4/20ma signal shall be capable of outputting the current being used by the sump pump motor.

11. The Eaton EMR-3MP0 protection relay with options can meet the above criteria. Note this is only an example a manufacturer with a relay equal to this one will suffice.

12. If any software which is required to program the relay, the software must be provided with any special cables, or etc. All software must be free of malicious code or any virus.

Attached documentation with relay shall be provided which goes into details on further instructions.

Enclosure

1. Enclosures for the medium voltage starters shall meet NEMA ICS 6 standards. The enclosure shall be NEMA 1 type, free standing, completely front accessible.

Government Furnished Drawings

1. The sheet on the switch arrangement is attached, which must be used for the new switchgear.

2. The floor plan is attached which shows the tentative switchgear installation on the 2nd floor of

Hoover Dam, which is done by government forces. This drawing shows the real estate the government is working with, for the floor space allowed to install the switchgear. Note the existing switchgear was installed when the NEMA codes were less stringent therefore the existing equipment is smaller.

After receiving the equipment

1. After receiving the equipment, the government has the option towill call the technical representative of the manufacturer out for the equipment checkout within one year of the receiving date. The vender/supplier is responsible for this cost. The cost is a separate line item on the billingquote. Note: Most likely all of the new switchgear will not be installed, therefore at minimum the 120VAC external power supply can be used for testing the switchgear which isn’t wired up to the government 2300 incoming line feeder. The government will install one piece of switchgear for two starters for example within one year of the equipment arriving at the warehouse and call out the technician for installation verification for example. Note the other two arrangements will only be tested with the 120VAC test plug at this time granted they are still in the warehouse storage. One piece of gear will be tested with 2300-volt power provided. The other two pieces will most likely not be installed with 2300 Volts; therefore, the 120 VAC test plug will be used for testing. Basically the government installation is a question mark, looking at one full test and two partial test with only 120 VAC test plugs.