Beijing GFUVE Instrument Transformer Manufacturer Co.,Ltd.
Beijing GFUVE Instrument Transformer Manufacturer Co.,Ltd. an exclusive current transformer, split core current transformer, current clamp & voltage transformer manufacturer.
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TEST-905 5000A 30KVA CAPICITY PRIMARY CURRENT INJECTION TEST EQUIPMENT SYSTEM of Circuit Breaker & Swith
5000A 30KVA CAPICITY PRIMARY CURRENT INJECTION TEST SYSTEM FOR POWER TRANSFORMER TESTING
TEST-905 primary current injection test system adopts ARM chip to control the output process and large capacity of toroidal transformer. It is equipped with LCD screen display current meter, also showed primary current value, secondary current value, turn ratio and the phase shift. Aluminum alloy body with PC panel component the shell.
TEST-905 is mainly applied to test CT turn ratio and polarity in the power system, the contact resistance, high voltage circuit breaker protection test and high voltage generator test etc, which need large current on-site or in the lab.
The objective of the test is to identify how the system operates under various levels of current load.
Primary injection testing system is suitable for testing over-current trip relays attached to a circuit breaker. By injecting the current into the system we can measure if the breaker will trip or fail, and how long the current is live before the circuit is broken.
Circuit breakers can go long periods of time without activation, and failure at the moment of activation can cause catastrophic damage to the electrical system. Circuit breaker testing with primary current injection on a breaker that has not triggered in some time is the best way to recreate the real operating conditions of a current spike.
Primary current injection testing is utilised in high current/high voltage scenarios found at large electrical installations such as substations. 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.
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 testing is suitable for testing over-current trip relays attached to a circuit breaker.
Industrial Electrical Testing: Primary Current Injection Test Sets. A primary current injection test set injects a powerful current on the primary side of protective relay equipment or current transformer to determine how the system will react to an injection of current. Circuit breakers will respond to the current injection by either tripping.
Polarity testing The currents phase displacement is shown, and the polarities of the outputs are clearly marked.
Heat runs INGVAR is ideal for performing heat runs. Current can be applied continuously or through programmable intervals. The times can be shown in minutes and hours which facilitates long-term testing capability. Automatic reclosers and sectionalizers INGVAR can also be set to test circuit breakers with reclosing relays. Operating limits, partial times, total times and the number of operations before lockout can be measured. User-selectable reclosing sequences can be programmed for testing sectionalizers.
Testing integrity of safety-ground devices One way to test safety-ground devices is by injecting current through the safety-ground and measure the voltage drop to get the impedance.A primary current injection test set injects a powerful current on the primary side of protective relay equipment or current transformer to determine how the system will react to an injection of current. Circuit breakers will respond to the current injection by either tripping, ending the flow the current, or failing, and allowing the current to continue traveling into the electrical system it is intended to safeguard. A primary injection test system will record is how long the current remains live before breaking. Performing current injection testing is essential to the maintenance of electrical systems, as circuit breakers
| Electrical parameters | |
|---|---|
| Accuracy | ±0.5% |
| Power Supply(AC) | 380V·70A, 50Hz/60Hz |
| Current Output (AC) | 5000A·5V or 2500A·10V |
| Capacity | 25KVA |
| The current output waveform distortion | ≤5% |
| Primary current | |
| Range | 0-5500A |
| Resolution | 0.1A |
| Accuracy | <0.5% |
| Secondary measurement | |
| Range | 0-6A |
| Resolution | 0.001A |
| Accuracy | <0.5% |
| Current duration | |
| 5000A range | 5000A 2-3minutes 2500A 3-6minutes |
| 2500A range | 2500A 2-3minutes |
| With timer | |
| Range | 0.0001～999.99S |
| Resolution | 0.001S |
| Accuracy | <0.5%±5 words |
| Mechanical parameters | |
| Dimensions (W×D×H) (mm) | 430×430×445 and 550×450×600 |
| Weight(kg) | Control Host 68kg, External voltage regulator weight 55kg |
| Environmental conditions | |
| Temperature | -10°C to 40°C |
| Relative humidity | ≤80% |
| 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 |
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