UPA-4Р
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Main features of UPA: ■ Wide range of load match with loading transformer ■ compact case, which integrates power and device components ■ the service convenience ■ to meet the sinusoidal form of output currents, it is required to connect a single-phase voltage regulator to the UPA |
The device is intended to testing the automatic circuit breakers, the relay protections and other low-impedance curcuits. The device implements a process flowsheet to test automatic overload control systems by primary alternating current. This scheme includes:
● A loading transformer
● A thyristor regulator
● A regulator of the current / time with parameters indication
● The flexible wires
| MAIN SPECIFICATIONS AND FEATURES | ||
|---|---|---|
| The maximum output load voltage, V (± 10%) | 3,5; 7,0 | |
| When the temperature of wires is no less than 40 °С, the load is 0,45 • 103, output current isn’t less than1, kA (± 10%) | 4,0 | |
| The range of the output current registration: | ||
| mode «10Х», А | 20,0 - 500,0 500,0 - 1000,0 |
|
| mode «1Х», А | 200,0 - 4000,0 | |
| The range of the time registration (the response time of AB) | 20,0 ms - 1000,0 ms 1s - 4h 00m 00s |
|
| The limits of error of the measuring, % | ||
| output sine current | 2 | |
| the time at interval (100,0-1000,0) ms | 1 | |
| the time at interval 1s - 4 h | 0,5 | |
| Supply voltage (at frequency 50 Hz )2, V | 380 ± 10% | |
| The threshold of the temperature protection, °C | 85 ± 10% | |
| Maximum current consumption, isn’t more than, А | 60 | |
| The time of continuous operation when the output current is 1.0 kA3, isn’t more than, h | 1 | |
| The time of continuous operation when the output current is 4.0 kA1, isn’t more than, s | 8 | |
| Overall dimensions (without flexible wires), mm: | 360х220х360 | |
| Weight, kg, isn’t more than (without flexible wires): | 28 | |
Notes:
1 – when secondary wires are connected sequentially;
2 – it is acceptable to power the device by the 220V voltage (but output power will be reduced by 3 times;
3 – when secondary wires are connected in parallel.