TEST-901 GFUVE with timer circuit breaker testing of 1000A primary
current injection test set
TEST-901 primary current injection test set adopts ARM Chip to
control its output process and large capacity of toroidal
transformers. It is equipped with LCD display and current meter; it
can show primary current value, second current value, turn ratio
and the action time. Packing is used as aluminum alloy body with PC
panel. TEST-901 is mainly applied to CT turn ratio testing in the
power system and contact resistance test which need large current.
The primary current injection method is usually the preferred test
method because it includes the current sensors, wiring, and the
current conduction path in the circuit breaker with the test.
However, this method has one disadvantage in that it will not
always detect sensor wiring and polarity problems.
Primary injection test systems. A large current (between 100A and
20,000A depending on system specifications and test requirements)
is injected directly on the primary side of the electrical system
such as a circuit breaker. The objective of the test is to identify
how the system operates under various levels of current load.
Primary Injection Primary and secondary current injection tests are
normally conducted to check the operation of circuit breaker and
their protective relays/devices. The protective devices installed
vary from circuit to circuit depending on the protection needs and
philosphy but typical relays/devices include overload, over
current, reverse etc
The primary injection testing is the only way to prove correct
installation and operation of the whole protection chain, as
involves testing the entire circuit; current transformer primary
and secondary windings, relays, trip and alarm circuits, circuit
breakers and all wiring are checked.
Parameters
| Electrical parameters |
|---|
| Accuracy | ±0.5% |
| Power Supply(AC) | 220V±10%·25A, 50Hz/60Hz or
110V±10%·50A, 50Hz/60Hz |
| Current Output (AC) | 1000A·5V or 500A·10V |
| Capacity | 5KVA |
| The current output waveform distortion | ≤5% |
| Dual protection | overload electronic protection and software protection |
| Primary current |
|---|
| Range | 0-1100A |
| Resolution | 0.1A |
| Accuracy | <0.5% |
| Secondary measurement |
|---|
| Range | 0-6A |
| Resolution | 0.001A |
| Accuracy | <0.5% |
| Current duration |
|---|
| 1000A range | 1000A 2-3minutes
500A 3-6minutes |
| 500A range | 500A 2-3minutes |
| With timer |
|---|
| Range | 0.0001～999.99S |
| Resolution | 0.001S |
| Accuracy | <0.5%±5 words |
| Mechanical parameters |
|---|
| Dimensions (W×D×H) (mm) | 430×260×260 |
| Weight(kg) | 25 |
| Environmental conditions |
|---|
| Temperature | -10°C to 40°C |
| Relative humidity | ≤80% |
Selection Guide
| Model | ACCU
RACY | Primary
current | AMMETER
(0-6A) | TIMER | POWER | INJECTION CURRENT TIME | DIMENSION(W×D×H)(mm) | WEIGHT | REMARK |
|---|
| TEST-901 | 0.5% | 0-1100A | YES | YES | 5KVA | 1000A: 2-3min;
500A:3-6min | 430×260×260 | 25KG | Integrated structure |
| TEST-902 | 0.5% | 0-2200A | YES | OPTIONAL | 12KVA | 2000A:2-3min;
1000A:3-6min | 360×300×295 and 320×300×300 | 35KG+15KG | Fission structure |
| TEST-903 | 0.5% | 0-3300A | YES | OPTIONAL | 15KVA | 3000A:2-3min;
1500A:3-6min | 380×350×360 and 340×290×420 | 48KG+42KG | Fission structure |
| TEST-905 | 0.5% | 0-5500A | YES | OPTIONAL | 25KVA | 5000A:2-3min;
2500A:3-6min | 430×430×445 and 550×450×600 | 68KG+55KG | Fission structure |
Photo
