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Control and measuring devices >> devices for control, signaling and control

ER4700/2 Reserve unit transformer protection PR4700 / 2.


15 230 RUB
3 960 UAH
5 pieces

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It is possible effectively delivery of any quantity.
The device is a backup transformer protection PR4700/2 (PR-4700/2, the PR 4700/2, PR47002)
The device is a backup transformer protection PR4700/2 is designed to turn off the power transformer equipped by the power supply switch or otsoedinitelem, in the case of short circuit in the substation switchgear to disconnect or relay protection.
Technical characteristics of the instrument transformers, backup protection device PR4700/2:
The ranges of input current - 1.0 A-6, 0A and 4.0 A-17, 0A;
The values ​​of current device settings backup transformer protection device PR4700/2:
- For the range of 1.0 A-6, 0A - 0,125 A, 0.25 A, 0.5 A, 1.0 A, 1.0 A, 2.0 A;
- For the range of 4.0 A-17, 0A - 0.375 A, 0.75 A, 1.5 A, 3.0 A, 3.0 A, 6.0 A;
Burst Tolerance - ± 5%;
The range of delay time - 0.25 sec-15, 75S;
The values ​​of the time setting unit transformer backup protection device PR4700/2 - 0.25, 0.5, 1.0 s, 2.0 s, 4.0 s, 8.0 s;
The minimum value of the time delay when the input current from 0A to 5A - 2c;
Charging voltage of the capacitor device backup transformer protection device PR4700/2 - 350.35 B;
Capacitance - 2h100mkF with access to two channels with galvanic isolation;
Power consumption - 15 V ∙ A;
Overall dimensions of the instrument transformers, backup protection device PR4700/2 - 450h272h192mm;
Weight - 10kg;
Climatic performance UHL for operation at ambient temperatures from -40 º C to +50 º C;
The instrument unit PR4700/2 back-up protection of transformers used in two-phase overcurrent protection with time delay.The source of circuit breaker, contactor otsoedinitelya or off is a block of capacitors;
To improve the reliability of the device used: high-quality capacitors such as UK78-01 made of aluminum metallized polypropylene film, which reserved the device limits the charging voltage of capacitors, instrument transformers with separate coils, as well as additional device provides five times charge-discharge of the capacitor bank;
The manufacturer guarantees the quality of the instrument transformers, backup protection device PR4700/2 technical requirements specifications, subject to the consumer the terms and conditions of storage, transportation, installation, operation, established specifications and operational documentation.