Strong Points
Function
The RESYS M40R differential relay is combined with a cut-off device equipped with a motorised control (automatic cut-off and restoration of power), ensuring the functions of:
- Protect against indirect contact.
- Limiting earth leakage currents.
- Re-engaging the cut-off device after detecting earth leakages and power outages.
The relay re-engages the system up to six consecutive times after different time intervals. If the fault is still present after the sequence of six re-engage attempts, the relay enters an alarm state and manual intervention is required.
Conformity to standards
IEC 60755
IEC 60947-2
IEC 60664
IEC 61543 A1
References
RESYS M40R is available in X versions
| Item | Type | Control voltage | Tripping threshold | Time setting | Select |
|---|---|---|---|---|---|
| 49413724 | RESYS M40R | 115/230 VAC | 30 mA .. 30 A | 0..10 s | |
| 49413741 | RESYS M40R | 400 VAC | 30 mA .. 30 A | 0..10 s |
Advantages
Automatic reclosing
This function provides protection, particularly in isolated sites or for processes requiring a restart in the event of transient faults (continuity of service ensured in the absence of a maintenance team).
Fully configurable
- Adjustment of IΔn from 0.03 to 30 A.
- Time delay 0 to 10 s.
Ensures continuity of the power supply for strategic applications or in isolated sites
In the majority of cases, where the fault is not permanent, simply reclosing may resolve the situation.
Trigger accuracy by way of TRMS monitoring
Improves immunity to untimely triggers.
Real-time display of continuous leakage currents
LED bargraph shows the fluctuations of leakage currents in realtime.
