Type "B" MRCD differential relay
7. GENERAL FATURES
(continued)
Display:
3-digit LCD (1000 points)
Indicated value measurement error: ±17,5%, ±2 digits
LEDs:
ON: voltage present Us
AL1: pre-alarm IΔn 1
AL2: alarm, coil release IΔn 2
Display of the automatic instantaneous values:
- IΔn instantaneous
- Release threshold set IΔn 2
- Trip delay set IΔn 2
Programmable parameters:
- Release threshold IΔn 2: 0.03...3A
- Trip delay Δt 2: 0...10s
- Pre-alarm threshold IΔn 1: value % of IΔn2
- Trip delay Δt 1: 0...10s
- Password: 0...999 (default = 000)
MRCD (without connected switch)
SET=> Rated
residual operating
0,03A
current (I∆n)
SET=> Limiting non
0s
0,06s
0,15s
actuating time
Non-operating time
0,06s
0,15s
@ 2I∆n
Maximum break
23ms
0,075s
0,24s
time @ 5I∆n
Control:
MANUAL TEST:
- It checks the efficiency of the earth leakage relay, including output
relays
- Local test: front T pushbutton
- Remote test: T/R external contact closing
MANUAL RESET:
- Local reset: front T pushbutton
- Remote reset: T/R external contact closing
PERMANENT AUTOMATIC TEST:
- It checks the continuity of the earth leakage relay - toroid
connection
Relay status
Positive safety
(normally energised relay)
Technical data sheet: IDP000262EN_04
0,05...3A
0,25s
0,5s
1s
2,5s
5s
0,25s
0,5s
1s
2,5s
5s
0,39s
0,64s
1,14s
2,64s
5,14s
Updated: 14/01/2020
Code: RDBMRCD24 – RDBMRCD230
Model: Delta
7. GENERAL FATURES
Us (A1 – A2):
Auxiliary power supply
- IM-RDBMRCD230:
Us: 100...250V AC/DC
Permitted variation: 70...300V AC/DC
Permitted frequency: 42...460Hz
Self consumption: < 6.5VA
- IM-RDBMRCD24:
Us: 24...60V AC @ 24...78DC
Permitted variation: 16...72V AC @ 9,6...94V DC
Permitted frequency : 42...460Hz
Self consumption: < 6.5VA
Maximum dissipated thermal power for the thermal dimensioning of
the panels: 6.5W
Operating room temperatures
- Min. = -25 °C Max. = +55 °C.
Room storage temperatures
- Min. = -25 °C Max. = +70 °C.
Protection class:
- Terminal protection index against solid bodies and liquids:
IP20 (IEC/EN 60529)
- Protection index of the internal components against solid bodies
and liquids: IP30 IEC/EN 60529
Housing material:
>PC+ABS<
Volume and weight of packed MRCD:
Code Art.
Model
Type B differential
IM-RDBMRCD230
relay 230Vac
Type B differential
IM-RDBMRCD24
relay 24Vcc
Created: 06/09/2019
(MRCD and TDB):
(MRCD and TDB):
Kg
3
dm
1
0,22
1
0,22
5 | 7