Contactor & Relay (D-13)

Product Description

LRD-13 series electronic overload relay(hereafter named as relay) is mainly applied to certain circuit that AC50/60Hz, rated work voltage below 690V, current is within adjustin current range marked on cover to be used for three-phase motor's overload, open-phase.
This relay is onw new, energy -conservation, high-tech electrical appliance applying micro conroller. Compared with same specification of dil-sheet-metal type heating relay, it could conserve energy by 80% or higher. This relay utilizes micro-controller for testing the circuit wave and current value of main circuit to check out whether the motor is overloaded, open-phased or not. When overloaded, the micro-controller could decide the delayed time by means of computing the multiple of overload current. Once the delayed time is up, it could cut off the NC connector or switch on NO connector through trip configuration, the micro-controller would shorten delayed time during open-phase.

Normal work condition:
1, The altitude couldn't exceed 2000m;
2, Surrounding air temperature is -5º C-40º C
The average temperature within 24 hours shouldn't exceed +35º C
3, Air condition: When the temperature is +40º C, the comparative humidity of air couldn't exceed 50%, the +25º C is the upper limit under lower temperature, the mouthly average maximun comparative humidity in the moistest month should be below 90%, and its average lowest temperature should be below +25º C, the dew on product's surface resulted from temperature's changing shoude be taked in account.
4, Pollution grade: 3 Grade,
5, Installation type: III category,
6, The slope between installation surface and vertical surface couldn't exceed ± 5º C,
7, the product should be used and installed at certain place without any shock, vibration etc...

Configuration feature:
1, Three-phase electronic type, the trip grade is divided into 10A, 10 Grade.
2, Owns open-phase protection function.
3, Owns adjusting current sustaining adjustable device,
4, Owns two indication lamp separately used for indicating normail, overload delaying, open-phase, open-phase delaying.
5, Owns manual test configuration.
6, Owns manual reset button.
7, Owns onw NO and NC connector,
8, Installation type: It could be plug-in installed or separately installed with contactor.