Symmetrical Load Tester


PRINCIPLES OF OPERATION
A Symmetrical Load Tester is an important device used to test that repaired 3 phase trailing cables are operating electrically symmetrical. Australian Standards require all mining cables pass this test before returning to service.

SPECIFICATIONS

  • 20 KVA - 3 Phase transformer

  • 415 Volt Primary to 31 Volt Secondary @ a maximum load of 385 Amps output

  • Variac 3 Phase - Maximum load 28Amps

  • Diris A-30 Power Meter - Which reads the three individual phase currents.

  • 3 x Current Transformers (ratio 500/5)

  • 1 x Milliamp Meter - Which read the milliamp leakage injected into the earth conductors.

  • Timers designed for 30 seconds (30 sec on) operation time and 2 minutes cool down time (2min off).

  • Emergency Stop Button
- Run Button
- Power on keyed Button
- 3 x 5 metres of test leads - 120mm² single core cable

  • 10 metres of main lead - 20Amp 4 pin plug

  • Unit comes in a powder coated 1.5mm Galvabond (IP21) steel enclosure

  • Wheels: fixed and swivel (with break) wheels

  • Custom connecting pins to suit cables under test (to be advised by customer)

Total size: 1600mm x 600mm x 850mm
Total weight: 320kg

Delivery time: 8-9 weeks