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APPLICATION SELECTION CHART |
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POWER |
RANGES |
MAXIMUM CURRENT OUTPUT |
TIMER |
AMMETER |
MOTORIZED
REGULATION |
AUXILIARY DC |
| PERMANENT |
60 m |
15 m |
3 m |
1 m |
1 s |
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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 |
— |
— |
— |
— |
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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 |
— |
— |
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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 |
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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 |
— |
— |
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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, 500 A, 1000 A, 2000 A |
2 KA |
2,4 KA |
3,6 KA |
4,8 KA |
6 KA |
10,8 KA |
YES |
YES |
YES |
— |
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6 KVA |
500 A, 1000 A, 2000 A |
2 KA |
2,5 KA |
4 KA |
5,5 KA |
7 KA |
13 KA |
YES |
YES |
— |
— |
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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 |
— |
— |
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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 |
— |
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8 KVA |
4000 A |
4 KA DC |
— |
— |
— |
5 KA DC |
— |
YES |
YES |
— |
— |
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APPLICATIONS
The Primary Injection Test unit offers multiple applications, the main are:
- Primary injection tests including the complete loop, such as current transformer cables, protective relays, and circuit breakers.
- Test of measurement and protection transformers.
- Detection of the heating points of substation busbars.
- Testing of Low Voltage Molded Case Circuit breakers.
- Testing extra fast relays in DC current with the model LET-4000-R.
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