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RESYS M40R

Type A earth leakage relays

with automatic reclosing

RESYS M40R
Function
  • RESYS M40R earth leakage relays associated with a remote trip breaking device (automatic power breaking and reclosing), provide the following functions:
    – protection against indirect contact,
    – limitation of leakage currents.
    – reclosing of trip breaking device after earth leakage detection and power supply breaking.
  • The relay recloses the system up to six consecutive times after different time intervals. If the fault is still present after the sequence of six reclosing attempts, the relay is locked in alarm mode and a manual intervention will be required.
  • Rapid recognition of an insulation fault increases the availability of the distribution network by preventing accidental power cuts and the resulting loss of production. TRMS measurement avoids repeated random tripping and the bargraph allows the display of permanent leakage current.
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 In 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.
Tripping accuracy by TRMS measurement
  • Improves immunity to nuisance tripping.
Instantaneous display of permanent leakage currents.
  • The LED bargraph provides a real-time display of fluctuations in leakage currents.
Applications
application RESYS M40R

The RESYS M40R relay must be combined with an automatic tripping / reclosing breaking device:

  • a motorised switch
  • a device fitted with an undervoltage coil
  • a contactor

 

Front panel

front panel RESYS M40R 1. Adjustment IΔn.
2. “ON” LED.
3. “RESET” pushbutton.
4. “TRIP” alarm LED.
5. LED bargraph (% x IΔn).
6. “TEST” pushbutton.
7. Time delay setting.

 

 Characteristics

RESYS M40R
Auxiliary power supply US
Frequency 47 … 63 Hz
AC operating zone 0.8 … 1.15 US
DC operating zone 0.8 … 1.05 US
Max. consumption 6 VA (AC) / 5 W (DC)
Insulation (according to IEC 60664-1 standard)
Rated insulation voltage 250 VAC
Rated impulse voltage 2.5 kV (115 VAC) / 4 kV (230/400 VAC)
Degree of pollution Class 3
Threshold values
IΔn setting 0.03 – 0.1 – 0.3 – 0.5 – 1 – 3 – 5 – 10 – 30 A
Accuracy of tripping – 20 … – 10% IΔn
Domain of network frequency 15 … 400 Hz
Time delay setting 0 – 0.06 – 0.15 – 0.30 – 0.50 – 0.80 – 1 – 4 – 10 s
Alarm
Alarm configuration mode storage / automatic reset
Reset manual by pushbutton / using terminal
Reclosing
Nb of automatic reclosing attempts 6 max
Time delay between two reclosing 7.5 – 15 – 30 – 60 – 120 – 240 s
Reset of automatic reclosing counter (tCR) 15 min.
Output contacts
Number of contacts 2
Type of ALARM 1 contact inverter
Type of ALARM 2 or PRE-ALARM contact simple
Characteristics contact ALARM 1 250 VAC – 8 A – 2000 VA
Characteristics contact ALARM 2 250 VAC – 6 A – 1500 VA
ALARM 1 operating mode negative security(1)
ALARM 2 or PRE-ALARM operating mode positive security(1)
Operating conditions
Operating temperature – 20 … + 55 °C
Storage temperature – 30 … + 70 °C
(1) Negative security: relay activated in case of alarm / Positive security: relay not activated in case of alarm.

 

Case

case RESYS M40R
RESYS M40R
Type modular
Number of modules 2.5
Dimensions W x H x D 44 x 85 x 63.5
Case protection index IP 40
Terminal protection index IP 20
Rigid cable cross-section 0.2 … 4 mm2
Flexible cable cross-section 0.2 … 2.5 mm2
Weight 190 g

 

Terminals and connections

Terminals and connections RESYS M40R
1 – 2 – 3 : external pushbuttons
5 – 6 – 7 : auxiliary power supplies US
8 – 9 : SOCOMEC differential toroid connections
10 – 11 : alarm relay 2 outputs
12 – 13 – 14 : alarm relay 1 output
Note:

  • The earth conductor must not pass through the C.T.
  • For single phase applications, only the live and neutral need to be passed through the C.T.

Cabling:

  • for distances > 1 m, use twisted pair cable between the unit and C.T.
  • Do not connect the shield to earth.

 

References

RESYS M40
Auxiliary power supply US (1)
Reference
115 / 230 VAC 4941 3724
400 VAC 4941 3741
(1) Other rating: Please consult us.