Earth Leakage Relay - Technical Details

     
Supply voltage Un 115 V AC (Part number R-ELRM-30V-F)
230V AC (Part number R-ERM-30V-M/
R-ELRM-10V) (85 - 115% of Un)
Frequency range 50/60Hz (AC supplies)
Isolation Over-voltage category III
Rated impulse withstand voltage 2.5kV (115V AC supply)
4kV (230V AC supply) for 1.2 / 50micro sec IEC60664
Power consumption (max) 6VA
   
Monitored leakage current For R-ELRM-30V-* = 0.30A (50/60Hz)
For R-ELRM-10V = 0-10A (50-60Hz)
Sensitivity For R-ELRM-30V-*
6, 10, 30, 50, 75, 100, 300, 500, 750mA
1, 3, 5, 7.5, 10, 15, 20, 25, 30A (user-selectable)
For R-ELRM-10V
30, 50, 75, 100, 300, 500, 750mA
1, 3, 5, 7.5, 10A (user-selectable)
Time delay For R-ELRM-30V-*
instantaneous, 50, 250, 500msec,
1, 2.5, 5, 10 sec (user-selectable)
For E-ELRM-10V
instantaneous, 50, 250, 500msec (user-selectable)
Note: for sensitivity setting: of 30mA, the time delay is fixed to instantaneous, <40msec and is not adjustable
Trip level limits 70 - 80% of sensitivity
Reset value <7% of tripped level
Measured current 0.005 to <30A displayed on auto ranging 2 digit 7 segment red LED display
Resolution 100 microA min to 1A max
Display accuracy +/-15% of actual measured leakage current
Reset time <120msec (from supply interruption)
   
Self test duration 5 secs. (operates on power on only)
Memory storage of the leakage fault and reset with "test/reset" button
   
Toroid connection(11,13) to external R-ZCT toroid only (1000:1)
Toroid withstands capacity 50kA for 200mS
Distance between toroid & relay 50 metres (max)
   
Ambient temperature -5 to +60 deg C / -5 to +40 deg C
(in occordance to IEC755)
Relative humidity +95%
   
Output(4, 6, 8, 10, 12, 14) 2 x SPDT relay
Output rating
AC1 250V 8A (2000VA)
AC15 250V 2.5A
DC1 25V 8A (200W)
Electrical Life >= 150,000 operations at rated load
Dielectric voltage 2kV AC(rms) IEC 60947-1
Rated impulse withstand voltage 4kV (1.2/50 microsec) IEC 60664
Remote "test" / "reset" (5, 7, 9) requires two NO contact (ie pushbutton)
Minimum trigger time >50msec
Fault level output(1,2) 50% at sensitivity setting (factory set)
User adjustable from 10-65% in 5% increments
Load 40mA max @ 240VAC
   
Housing Grey flame retardant Lexan UL94VO
Weight approximately 250g
Mounting option on to 35mm symmetric DIN rail to BS5584:1978
(EN50002, DIN46277-3)
Terminal conductor size <=2.5mm sq. stranded
<= 4mm sq. solid
   
Approvals Conforms to IEC755, 50081-1,
50081-2, 50082-1, 50082-2, CE
   

© Copyright Bridex Singapore 2006    Updated On: 13/04/2005