- Mô tả Specs Details Overview Components Packages Resources Additional Modules Complementary products Architecture Tools Benefits Features Customer Ordering
- Thông số Specs Details Overview Components Packages Resources Additional Modules Complementary products Architecture Tools Benefits Features Customer Ordering
Automatic circuit breaker tester UPA-3 is designed for testing and ampere-second characterization of automatic AC current circuit breakers. The device allows registering the value of the supplied current and timing the automatic circuit breaker switching interval.
Circuit breaker tester UPA-3 is a mobile device, which could be easily transported to a required testing location.
Circuit breaker tester UPA-3 operates on the principle of varying the power in the primary circuit of the matching power transformer and, respectively, varying the output current, flowing through the automatic circuit breaker under the test. Power regulation could be done either through an external regulator (RNO or VR) or through a built-in thyristor controller.
Technical Specifications
Characteristic | Value |
Single-phase AC power supply voltage, V | 220±22 |
Power supply frequency, Hz | 50±1 |
Maximum output current when powered from 220 V AC circuit, kA | 3 |
Test current measurement range, kA | 0.10…3 |
Test current measurement range on one coil, A | 100…1000 |
Test current measurement range on two coils, A | 50…500 |
Test current measurement range on three coils, A | 33…330 |
Test current measurement range on four coils, A | 25…250 |
Test current measurement range on five coils, A | 20…200 |
Test current supply time measurement range, s | 1…7200 |
Test current supply time measurement range, ms | 50…990 |
Reduced error of the test current measurement, % | ±3 |
Absolute error of the current flowing time and the switching off time measurement in the range from 50 ms to 990 ms, ms, max | ±20 |
Reduced error of the current flowing time and the switching off time measurement in the range from 1 s to 7200 s, %, max | ±3 |
Continuous running time under the maximum current, s, min | 10 |
Maximum consumed power, kVA | 5 |
Net weight of IT-3 (current supply), kg, max | 13 |
Net weight of the control unit (without flexible busbars), kg, max | 3 |
Net weight of the flexible busbar (length 1 m, cross-section 110 mm2), kg, max | 1.3 |
Dimensions of the control unit, mm, max | 340х210х140 |
Dimensions of the IT-3, mm, max | 250х220х115 |
Lifespan, years, avg | 10 |
Package Contents
Component | Quantity |
UPA-3 control unit | 1 |
Current source IT-3 | 1 |
Flexible busbar with cross-section 110 mm2 (length 1 m) | 4 |
RNO connection outlet | 1 |
Power cable UPA-3 | 1 |
Fasteners for connecting busbar, sets | 1 |
RNO (Inom = 22 A) | Optional* |
Cable for connecting RNO to UPA-3 | Optional* |
Documentation | |
User’s Manual | 1 |
- * Delivery terms of RNO are discussed separately.
