Variable Auto Transformer

Model: PS60A3PO470V

Type: Oil Immersed Variable Auto Transformer (Variac)

Rated Power: 45 KVA

Rated Primary Line Voltage: 415 V AC 3ɸ (L - L), ±10% 50 Hz 4 wire / 3 wire

Rated Primary Current: up to 60 Amp per phase (Approx.)

No Load Current: Less than 1% of rated unit

No Of Phase: 3 Phase + N

Rated Secondary Line Voltage: 0 – 470 V AC 3ɸ, (L - L) ±10% 4 wire / 3 wire

Rated Secondary Current @470V: 0 - 60 Amp per phase Max

No. Of Phase: 3 Phase + N

Overload capabilities: up to 120% of rated unit current for max 05 min

Cooling: Oil Immersed cooling with radiator & fin front & back of unit

Oil Qty: 145 L (Approx. +- 10 L) Recommended IS335

Reference Standard: IEC 61378-1 & IS 5142 : 1969

Ambient Temperature: 05-45 Deg. C

Maximum Temp Rise : up to 65 Deg. C

%Reactance: up to 5%

Insulation Class: A Class insulation

Duty Cycle: Continuous 100% duty cycle as per rating

Voltage Variation: Manual Hand Operation with PVC insulated Steering 

Coil Construction: 1 Coils used in per phase of 60 Amp each rating

Total Coils: 3 Coils used in unit each coil rating max 60 Amp

Current Transformer: 3 nos. 60/5 0.5% accuracy Class

Protection: 4 pole MCCB on Primary line (Make: L&T)

Power Frequency withstand Voltage

For both winding: 3 KV rms 50 Hz for 1 Min

i) Between primary and secondary winding

ii) Between shorted winding and frame

Mounting: Heavy Duty casting wheel mount un-direction & lugs for easy shifting & movement

Enclosure IP Rating: IEC 60529, IP50 (Sheet Steel) with powder coated paint (Color: Siemens Gray)

Type Of Primary Terminations: Direct Connection with MCCB 4 Pole

Type Of Secondary Terminations: Direct Connection with DMC Molded insulators copper bar

Connection Terminals: DMC molded copper bar insulators

Oil Drain: Oil Drain valve tap bottom of tank front sided

Oil Level: Oil level indication front of tank with glass view

Earth Terminals: Ground / earth terminals provided front and back sided

Winding Wire: IS 12444, ASTM B-49 Pure Copper DCC wire

Core Type, Grade of lamination: CRGO Laminated Core 30ZH100

Service: Indoor Application

Dimension (LxBxH) and Weight (Kg): 22”x 26”x 45”(Approx) Net Wt: 160 Kg (Approx.) Gross Weight: 250 kg

Metering, Indications and Switching:

1. Incoming Side MCCB 4 pole.

2. I/O Connection terminals DMC molded bus bar copper insulators

3. Incoming side 3 Phase LED type indicating R,Y,B LED indicators.

4. Secondary side 3ph digital VOLT meter and AMPERE meter, Steering for increase decease voltage.

5. Rotary Switch on voltmeter for primary & secondary voltage.

Documentation: Factory Test Report as per standard