Application:-
1. Comprehensive protection of LV motors.
2. Replacement for RIz, RIzc, RIzx relays.
3. Available models: A, B, C, U – see details in the catalogue card
Protections
1. Overload – thermal image:
2. measurement of true RMS from 10 to 250Hz
3. nominal motor current setting from 0.37 do 80A (direct wiring)
4. time constants specified through tripping time setting at 6xIn current value
5. Unbalance, loss of supply and loss-of-phase condition
6. Excessive starting time
7. Locked rotor
8. Over temperature (with PTC sensors)
9. Underload with time delay setting
10. Short circuit
11. Earth fault protection
12. Self motor restart after a voltage loss on a substation busbar
13. Limitation of the number of start-ups
Measurements:-
1. Phase currents
2. Thermal load
3. Earth current
This THREE-PHASE LV MOTOR PROTECTION RELAY BLOCK is easily insert in your schematic diagram and connect as you like way.
Functions:-
1. Easy connection of motor feeders
2. Pre-fault indication of overload
3. Up to 4 programmable output relays
4. Up to 4 programmable binary inputs
5. RS 485 with Modbus RTU protocol
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