Chẩn đoán và thử dòng cao KEP UPA-3


Product: Chẩn đoán và thử dòng cao
Model: KEP UPA-3
Nhà sản xuất: Kharkovenergopribor
Chi tiết

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.

UPA-3 is a mobile device, which could be easily transported to a required testing location.

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

Operating Conditions

The device is designed for an indoors operation under the following conditions:

Condition Value
Air temperature, °С from -35 to +35
Relative humidity, %, up to 80 at +20° С
Atmospheric pressure, kPa (mm hg) 84,0 – 106,7 (630 – 800)

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*
User's Manual 1

* Delivery terms of RNO are discussed separately.


The Manufacturer guarantees UPA-3 conformity with the current technical documentation and the relevant Electrical and Safety codes and standards.

Limited Warranty period is 12 months from the date of shipment of the apparatus to the consumer.


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