Basler Electric BE3-47N overview
Basler Electric BE3-47N Phase Balance Relays BE3-47N phase balance relays can detect the following conditions in 3 phase three or four wire systems: Phase unbal...
Product details
Manufactured byBasler Electric
Product groupPhase Balance Relays
DescriptionBasler Electric BE3-47N Phase Balance Relays
ApplicationsBE3-47N phase balance relays can detect the following conditions in 3 phase three or four wire systems: Phase unbalance, phase loss, phase reversal, and phase sequence. The phase balance relays are used to detect phase loss and unbalance in systems using motors, generators, heater elements, and transformers. A phase unbalance as small as 10% in a 3 phase motor can cause the temperature in the motor winding to increase by more than 120%. Correct setting of the BE3-47N or BE3-47N/27 will ensure this does not occur. Protection against open phase regenerated voltage, created if a single phase should fail, is also provided. User adjustment of unbalanced voltage between 5 and 15% is provided along with time delay adjustment of 200ms to 10 seconds. If system being monitored is healthy, the relay is energized and the red LED is illuminated. If there is phase unbalance greater than the preset level, or phase loss/reversal occurs, the relay de-energizes after time delay period. The BE3-47N/27 provides all the protection features of the BE3-47N with the additional benefit of having symmetrical undervoltage protection. This means that if all 3 phase voltages remain balanced but drop below a preset voltage, the relay will de-energize. The undervoltage is internally set at 85% below the nominal voltage.
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Basler Electric
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Product group
Phase Balance Relays
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