CARTE 7500/10000 kVA 13.8kV to 4.16kV 3-Phase ONAN/ONAF Power Transformer
CARTE

7500/10000 kVA 13.8kV to 4.16kV ONAN/ONAF Power Transformer

SKU: 158682
Condition: Used
Year: 2005
Price:
$189,825

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Description

This Carte International three-phase liquid-filled power transformer is rated 7,500 kVA ONAN / 10,000 kVA ONAF and configured for 13,800Y/7,967V primary to 4,160V Delta secondary service. Designed for medium-voltage industrial power distribution, the transformer provides a substantial 10 MVA forced-air capacity for supplying 4.16 kV switchgear, MCCs, large motors and other high-demand electrical loads. The transformer features copper high- and low-voltage windings, approximately 6.82% impedance at 85°C, a five-position high-voltage tap arrangement, and forced-air radiator cooling. Instrumentation includes liquid temperature, winding temperature, liquid level and pressure/vacuum monitoring. Manufactured in September 2005, the transformer was built to CAN/CSA-C88-M90 requirements. The tank is designed to withstand full vacuum and contains approximately 3,942 L of Cross Trans 106 insulating oil.
Year: 2005
S/N: 19796-001
Condition Used
Electrical
kVA 7500 kVA
Primary Voltage 13800 volts
Secondary Voltage 4160 volts
Phase 3-phase
General
Transformer Type Power Transformer
Auto VS Isolation Isolation
Oil vs Dry Oil
Other Specifications

Manufacturer: Carte International Inc.

Transformer Type: Liquid-Filled Power Transformer

Rated Capacity: 7,500 kVA ONAN / 10,000 kVA ONAF

Base Capacity: 7,500 kVA

Forced-Air Capacity: 10,000 kVA

Primary Voltage: 13,800Y/7,967 V

Secondary Voltage: 4,160 V

Primary Connection: Wye

Secondary Connection: Delta

Frequency: 60 Hz

Cooling Class: ONAN / ONAF

Temperature Rise: 65°C

Impedance: 6.82% at 85°C

Insulation Class: 15 kV

High-Voltage BIL: 95 kV

Low-Voltage BIL: 60 kV

HV Conductor: Copper

LV Conductor: Copper

Secondary Full-Load Current: 1,040.9 A

P.O. Number: 207-04354 Rev. 400

PCB Classification: Non-PCB

Tank Construction: Designed to withstand full vacuum

Sealed Unit Operating Pressure: +48 / -45 kPa

Load Capacity at 0°C Ambient: 8,375 kVA


High-Voltage Tap Positions

  1. Tap 1 - A-B: 14,490 V
  2. Tap 2 - B-C: 14,145 V
  3. Tap 3 - C-D: 13,800 V
  4. Tap 4 - D-E: 13,455 V
  5. Tap 5 - E-F: 13,110 V
  6. Tap Adjustment: De-energized / off-circuit tap switch


Cooling System

The transformer is equipped with three Krenz-Vent forced-air radiator fans, providing the additional cooling required for its 10,000 kVA ONAF rating.

  1. Cooling Fans: 3
  2. Fan Manufacturer: Krenz & Co. / Krenz-Vent
  3. Fan Models: F24-A8583-8 / F16-A8482-7
  4. Motor Manufacturer: Leeson Electric
  5. Motor Model: A4P17NZ11B
  6. Motor Power: 1/2 HP
  7. Motor Voltage: 115 V


Applications

Designed for large industrial medium-voltage distribution systems requiring transformation from 13.8 kV to 4.16 kV, including mining operations, processing plants, mills, crushers, conveyors, pumping systems, compressors and other facilities operating large 4.16 kV motor loads or switchgear lineups.

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