Wymuszalnik prądowy AC – SMC LET-4000-RD

Opis

AC Current Test Set up to 20 kA

The LET-4000-RD is designed to perform most of the primary tests that are necessary in substations commissioning.

It allows to perform with sufficient power, all the primary current injections to test the proper function and wiring of all the elements that compose the protection and measuring section in a substation.

The regulation system is based on a continuously variable autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolate the main supply from the load. A built-in ammeter and a timer gives the information about the current value and the operation time of the relay or breaker under test.

CHARACTERISTICS

  • Permanent current up to 4000A, 8KVA in 4 Ranges.
  • Made up of two units.
  • Built in digital ammeter 0.5% accuracy.
  • Built in digital timer resolution 1 ms.
  • Thermal and shortcircuit protection.

APPLICATIONS

  • Direct and motor overload relay test.
  • In general, primary tests including the complete loop, i.e., current transformer, leads, protective relay and circuit breaker.

Nominal current is indicated in each model’s name. However, higher currents can be attained for limited periods as long as the connected load (including the test leads) falls within the unit’s output power.

Product Power Ranges Permanent Maximum current output Timer Ammeter Motorized
Regulation
Auxiliary
DC
60m 15 m 3 m 1 m 1 s
LET-400 1 KVA 10 A, 50 A,
200 A, 400 A
400 A 600 A 800 A 1,1 KA 1,4 KA 2,5 KA - - - -
LET-400-RD 1 KVA 10 A, 50 A,
200 A, 400 A
400 A 600 A 800 A 1,1 KA 1,4 KA 2,5 KA yes yes - -
LET-400-RDC 1 KVA 10 A, 50 A,
200 A, 400 A
400 A 600 A 800 A 1,1 KA 1,4 KA 2,5 KA yes yes - yes
LET-1000-RD 2 KVA 250 A, 500 A,
1000 A
1 KA 1,5 KA 2,25 KA 2,75 KA 3,5 KA 6,25 KA yes yes - -
LET-2000-RD 4 KVA 250 A, 500 A,
1000 A, 2000 A
2 KA 2,4 KA 3,6 KA 4,8 KA 6 KA 10,8 KA yes yes - -
LET-2000-RDM 4 KVA 250 A, 1000 A,
2000 A
2 KA 2,4 KA 3,6 KA 4,8 KA 6 KA 10,8 KA yes yes yes -
LET-2010-RD 6 KVA 500 A, 1000 A,
2000 A
2 KA 2,5 KA 4 KA 5,5 KA 7 KA 13 KA yes yes - -
LET-4000-RD 8 KVA 500 A, 1000 A,
2000 A, 4000 A
4 KA 4,8 KA 7,2 KA 9,6 KA 12 KA 21,6 KA yes yes - -
LET-4000-RDM 8 KVA 500 A, 1000 A,
2000 A, 4000 A
4 KA 4,8 KA 7,2 KA 9,6 KA 12 KA 21,6 KA yes yes yes -
LET-4000-R 8 KVA 4000 A 4 KA DC - - - 5 KA DC - yes yes - -

Więcej informacji o produkcie znajdą Państwo w karcie katalogowej.

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Krzysztof Tomaszewski
+48 618 644 630