Adjustable Earth Leakage Relay With Built In CBCT

Adjustable ELR comes with an inbuilt 55mm CBCT. Base mounted. Sensitivity adjustable from 100mA to 10A and time delay adjustable from 0 to 10 s. Can be customised as per user requirement.

Product Details :

Phase Monitoring Relays

Electronic and electrical devices are designed to operate at a certain voltage range and the device is likely to get damaged if the voltage is above or below that range. Under voltage is the decrease in AC RMS voltage at power frequency to less than 90% of the rated voltage whereas over voltage is the increase in +10% range of the rated voltage. Under voltage may cause the device to stop working or it may cause damage to motors if it is excessive. Due to over voltage electrical devices may stop working, or may even burst into flames.

Phase reversal is the condition in which two of the three phases (RYB) of supply line reverses. Switching any two of the three phases will cause the motor to turn in wrong direction which may cause major collateral damage. Single phasing is a condition in three-phase supply in which supply to one of the phase is cut-off. It is caused by single phase protection devices such as fuses and circuit breakers. It may cause excessive noise and vibration in motor..

User benefits of M-Kris Voltage & Phase Monitoring Relays:

Undervoltage & Overvoltage Relays

Electronic and electrical devices are designed to operate at a certain voltage range and the device is likely to get damaged if the voltage is above or below that range. Under voltage is the decrease in AC RMS voltage at power frequency to less than 90% of the rated voltage whereas over voltage is the increase in +10% range of the rated voltage. Under voltage may cause the device to stop working or it may cause damage to motors if it is excessive. Due to over voltage electrical devices may stop working, or may even burst into flames.

In voltage relay, the true RMS voltage is continuously monitored through the microcontroller and the measured voltage is continuously monitored against the threshold voltage (i.e. the set value for the under voltage and over voltage) and as soon as the fault is detected by microcontroller, the relay trips and mains supply is disconnected and hence the devices are protected against the under voltage and the over voltage. Single phasing is a condition in three-phase supply in which supply to one of the phase is cut-off. It is caused by single phase protection devices such as fuses and circuit breakers. It may cause excessive noise and vibration in motor..

User benefits :

Motor Protection Relays

Electric motors are an integral part of the modern day electrical systems - whether in industrial applications, residential applications or commercial installations (e.g. in pumps, air conditioning systems, fans, conveyors, machine loads etc.). With increasing focus on the automation and energy efficiency, the electric motor technology has developed significantly resulting in extremely energy efficient motors and motors specially suited for automation applications. Keeping pace with these developments, the protection needs for motors have also become advanced.

Overloading of a motor is a very common occurrence in any electrical system which can potentially affect the motors adversely—reducing its working life significantly. Short circuit and Locked Rotor conditions may have immediate damaging effects on the motor winding, unless these conditions are quickly removed. Similarly phase failure leads to motor drawing more current. Phase reversal could result in the stalling of motor or motion in reverse direction.

M-Kris Electric’s Electronic Overcurrent Relay provides comprehensive protection against the following types of abnormal conditions occurring in the electrical systems: