Accesorios De Transformadores

Substation Transformers
Electrical Apparatus 

Unit Type Substation Transformers
GENERAL
Cooper Power Systems Unit Type Substation Transformers are designed to meet customer specifications. Flexibility in design, combined with the highest quality manufacturing processes, equipment, and testing procedures, enable Cooper Power Systems to provide a product optimized to the customer’srequirements. All units meet applicable American National Standards Institute (ANSI®), Institute of Electrical and Electronics Engineers, Inc. (IEEE®)and National Electrical Manufacturers Association (NEMA) standards, as well as National Electric Code® (NEC®), Department of Energy (DOE) and Canadian Electricity Association (CEA) specifications. Unit type substation transformers are available with enclosedsidewallmounted bushings for connections to primary and/or secondary switchgear. Substation transformers are made with a wide range of core steels and winding conductors to optimize efficiency versus cost. Flexible core/coil and tank construction enable your dimensional requirements to be met. Cooper Power Systems transformers are available with electrical grade mineral insulating oil orEnvirotemp™ FR3™ fluid, a lessflammable and bio-degradable fluid. Unit type substation transformers intended for indoor use are solely filled with Envirotemp™ FR3™ fluid, which meets Occupational Safety and Health Administration (OSHA) and Section 450.23, 2008 NEC requirements. Electrical codes recognize the advantages of using Envirotemp™ FR3™ fluid both indoors and outdoors for fire-sensitive applications.210-15

Figure 1. Unit type substation transformer equipped with low-voltage transition flange and high-voltage full height air terminal chamber.

PRoduct ScoPE
Type Fluid Type Size Primary Voltage Secondary Voltage Specialty Designs Three-Phase or Single-Phase, 50 or 60 Hz, 65 ºC (55 ºC/65 ºC, 75 ºC Optional) Envirotemp™ FR3™ fluid or Mineral Oil (upon special request) Three-Phase: 300 –12,000 kVA Single-Phase: 500 – 6667 kVA 2400 – 46,000 V 208Y/120 V to 24,940 V Wye Inverter/Rectifier Bridge Zig Zag K-Factor ( up to K-19) Hazardous Location (Class 1 Div 2) Internal Circuit Breaker (VFI) UL Listed & Labeled/ Classified Factory Mutual (FM) Approved Solar/Wind Designs Differential Protection Automation Solutions

0812 • Supersedes 0510

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Unit Type Substation TransformerFILLING/FILTER PRESS CONNECTION One inch upper filling and filter press connection. PRESSURE/VACUUM GAUGE Available with bleeder LIQUID LEVEL GAUGE Monitors oil level. Available with alarm contacts.

RAPID PRESSURE RISE RELAY Monitors rapid rise of internal pressure.

TANK LIFTING LUGS Lift hooks welded to the tank at each corner for lifting. PRESSURE RELIEF DEVICE Activated by excessivetank pressure.

NAMEPLATE Laser-scribed anodized aluminum

LIQUID TEMPERATURE GAUGE For easy monitoring of oil temperature. Available with multiple alarm contacts. DE-ENERGIZED TAP CHANGER Tap changer is externally operable.

Envirotemp™ FR3™ Fluid Decal

FULL LENGTH CABINET

THROAT Allows connection to lowvoltage gear.

CONTROL BOX Weather-resistant, dust-proof, NEMArated control box forcontrols and alarm contacts.

COOLING RADIATORS

GROUND PADS Non-corrosive, stainless steel ground pads on the front and rear.

DRAIN FILTERING VALVE The combination drain and filtering valve contains a fluid sampling device.

BASE Suitable for skidding, rolling and jacking. Low-voltage bushings Sidewall-mounted low-voltage molded epoxy bushings with NEMA spades

Figure 2. Unit typesubstation transformer with standard features and optional accessories.

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TABLE 1 Three-Phase, Single Temperature kVA Ratings
Three-Phase kVA Self-Cooled and Forced-Air Cooled with 65 ºC Temperature Rise 65 ºC Rise KNAN 500 750 1000 1500 2000 2500 3750 5000 7500 10000 12000 65 ºC Rise KNAN/ KNAF 575 863 1150 1725 2300 3125 4688 6250 9375 12500

TABLE 4 Three-Phase, Dual or...