7N26QA160 LOP DGA Reference Drawing.pdf
PDF 373 KB Posted
- Attached to
- Lookout Point DGA supply and incidental install
- Solicitation number
- W9127N26QA160
About this file
This is an arrangement drawing for a 48,000 KVA, three-phase, 60-cycle transformer (T1) prepared by the U.S. Army Corps of Engineers, Portland District. The drawing details specifications for a transformer unit designed for the Willamette River Basin in Oregon at the Middle Fork, Willamette River Lookout Point Reservoir installation.
The transformer specifications include a tank and cover designed to withstand 15 pounds of pressure and 15 pounds of vacuum. The unit contains 8,230 gallons of oil with a total weight of 205,700 pounds, including 61,700 pounds of oil and 44,400 pounds for tank and fittings. The transformer incorporates multiple components: a 115 KV, 400-amp Ohio Brass H.V. bushing with capacitance tap; two 1,200/5 amp multi-ratio bushing type current transformers; a 25 KV, 475-amp H.V. neutral bushing; and a 15 KV, 2,250-amp L.V. bushing from Pennsylvania Transformer Company. The unit features an oil circulating system with heat exchanger, safety valves with alarm contacts, weatherproof control cabinet with nitrogen pressure oil preservation system, magnetic oil gauge, dial thermometer with alarm contacts, and H.V. no-load tap changer with padlock provisions. The transformer base includes flanged wheels that are individually rotatable and accommodates lifting in either direction, with provision for pulling parallel to either the long axis (88 inches) or short axis (96 inches).
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Other files
| File | Type | Posted |
|---|---|---|
| 7N26QA160 LOP DGA Amendment 2.pdf | ||
| 7N26QA160 LOP DGA Amendment 1.pdf | ||
| 7N26QA160 LOP DGA Solicitation.pdf |
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Text version
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X3X2X1
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OF L.V. BUS &
BUS DUCT
ON NEAR
SIDE
ON FAR SIDE
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88"85"
12"12"
68"68"
88"
81"
84" TRACK GUAGE
88"
102" BASE
CABINET
CL CONTROL
(INERT GAS PRESSURE)
OUTLINE OF 48,000KVA, 3 PHASE, 60 CYLCE
FRONT VIEW
TOP VIEW
SCALE: 1/2" = 1'
1" 2" 2" 2" 2" 2"
2" 2" 2""4 3 "2
46"
24 TOTAL
5#8" DIA. HOLES
FRONT
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BUSHING HOUSING
FLANGE DRILLING FOR L.V.
5"5"5"5"5"
1"
ON BOTTOM PLATE OF CONTROL CABINET.
SKETCH OF CUSTOMER'S CONDUIT OUTLETS
SCALE: 1 1/2" = 1'
SCALE: 1 1/2" = 1'
30"19 18 20
97 3/4 "
/2
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SCHEMATIC SKETCH SHOWING
FACING L.V. SIDE
SCALE: 1/2" = 1'
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TANK AND COVER DESIGNED TO WITHSTAND 15# PRESSURE--15# VACUUM
BRACKET FOR FUTURE MOUNTING OF BUSHING POTENTIAL DEVICE.
FLANGED GATE VALVE FOR ISOLATING HEAT EXCHANGER, 21#2" OHIO INJECTOR CO.,
FLANGED GATE VALVE FOR WATER OUTLET, 3" OHIO INJECTOR COMPANY
FLANGED GATE VALVE FOR WATER INLET, 3" OHIO INJECTOR COMPANY
INJECTOR COMPANY
FLANGED GATE VALVE FOR ISOLATING OIL CIRCULATING PUMP, 21#2" OHIO
OIL CIRCULATING PUMP AND MOTOR
OIL TO WATER HEAT EXCHANGER
RELAYS
COMPARTMENT HOUSING OUTLETS FOR 10 OHM TEMPERATURE DETECTORS AND THERMAL
STAINLESS STEEL CONNECTION DIAGRAM NAMEPLATE
STAINLESS STEEL GROUND PAD WITH TWO (2)9#16" DIA. HOLES ON 13#4" CENTERS.
JACK PADS
TRANSFORMER BASE HAS PROVISION FOR PULLING IN EITHER DIRECTION.
AND 96" WHEN DIRECTION OF MOTION IS PARALLEL WITH LONG AXIS OF THE
DIRECTION OF MOTION IS PARALLEL WITH THE SHORT AXIS OF THE TRANSFORMER
STRUCTURAL STEEL BASE WITH FLANGED WHEELS INDIVIDULLY ROTATABLE
OIL SEDIMENT SEPARATER.
BRACING BANDS, USED FOR AUXILIARY GAS SPACE, SEE NOTE
3" FLANGED GATE VALVE FOR DRAINING CASE
SAMPLING DEVICE
2" GLOBE VALVE, OHIO BRASS #19 FOR COMPLETE DRAIN AND FILTER WITH SIDE
2" GLOBE VALVE, OHIO BRASS #19, FOR TOP FILTER PRESS CONNECTION
H.V. NO-LOAD TAP CHANGER WITH PROVISIONS FOR PADLOCKING
WEATHERPROOF SCREENED BREATHER
D.C. CIRCUIT
DIAL TYPE THERMOMETER WITH ALARM CONTACTS SUITABLE FOR USE ON A 125 VOLT
A 125 VOLT D.C. CIRCUIT
MAGNETIC TYPE OIL GAUGE (6" DIA.) WITH ALARM CONTACTS SUITABLE FOR USE ON
FLOWING INTO EACH COOLER LOCATED IN CONTROL CABINET ITEM 11.
DIFFERENTIAL PRESSURE RELAY FOR INDICATING WHETHER OR NOT WATER IS
A 125 VOLT D.C. UNGROUNDED CIRCUIT
EQUIPMENT WITH HIGH AND LOW PRESSURE ALARM CONTACTS SUITABLE FOR USE ON
WEATHERPROOF CABINET HOUSING NITROGEN PRESSURE OIL PRESERVATION
NAD COOLING SYSTEM EQUIPMENT. CABINET IS SPLIT TYPE.
WEATHERPROOF CONTROL CABINET HOUSING ALARM AND CONTROL CIRCUIT TERMINALS
LIFT LUGS FOR LIFTING ENTIRE TRANSFORMER COMPLETE WITH OIL
UNGROUNDED CIRCUIT
SAFETY VALVE WITH ALARM CONTACTS SUITABLE FOR OPERATION ON A 125 VOLT D.C.
TRANSFORMER LEADS
COVER TYPE TERMINAL BOX HOUSING OUTLES FOR BUSHING TYPE CURRENT
LIFT LUGS FOR LIFTING COVER
MANHOLE WITH 203#4" DIAMETER OPENING
HANDHOLE WITH 7" DIAMETER OPENING
L.V. BUSHING HOUSING. SEE DRILLING DETAIL.
HOLES ON 13#4" CENTERS
DWG. 42962-B. TOP TERMINAL TO BE SPADE TYPE WITH FOUR (4)9#16" DIA.
L.V. BUSHING, 15KV., 2250 AMP., PENNSYLVANIA TRANSFORMER COMPANY
CLAMP TYPE CONNECTOR FOR 1" I.P.S COPPER TUBING. VERTICAL TAKE-OFF
DWG. 42630-B. TOP TERMINAL TO BE ANDERSON BRASS CATALOG #DST-1110,
H.V. NEUTRAL BUSHING, 25KV., 475 AMP. PENNSYLVANIA TRANSFORMER COMPANY
COPPER TUBING. VERTICAL TAKE-OFF. OHIO BRASS DWG. 45501 BA 011
TERMINAL TO BE OHIO BRASS STYLE "CA" CLAMP TYPE TERMINAL FOR 1" I.P.S.
TWO (2) 1200/5 AMP. MULTI-RATIO BUSHING TYPE CURRENT TRANSFORMERS. TOP
H.V. BUSHING, OHIO BRASS 115KV., 400 AMP, WITH CAPACITANCE TAP AND WITH
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NOTE:
APPROXIMATE WEIGHTS IN POUNDS
TOTAL ----------------------------------------------------------------------------- 205,700#
OIL (8,230 GALS.) --------------------------------------------------------------- 61,700#
TANK AND FITTINGS ---------------------------------------------------------- 44,400#
TO BE LIFTED WHEN UNTANKING --------------------------------------- 99,600#
SUPERSEDES LP-4923-12 REV 4
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