02 4047 0777
www.mercs.com.au
02 4047 0788
MerCs Pty Ltd, 55 Pendlebury Rd, Cardiff, NSW, 2285, Australia | 2020 V1.1
Earth Leakage Relay
ME-ELR-DD
Indicator
Status
Trip
Alarm
FUNC
DP
DATA
0
0
0
0
0
No auxiliary power supply
0
0
0
0
1
Normal condition, no tripping
0
B
X
X
X
Leakage current exceeded 50% of the sensitivity
setting, I
△
n
0
FB
X
X
X
Leakage current exceeded 85% of the sensitivity
setting, I
△
n. Time delay countdown started
1
1
0
0
B
Delay time lapsed and relay tripped
0
X
1
0
1
Scroll through setting
0
X
1
1
1
Scroll through records
0
X
B
0
1
Programming mode
Light Indicators
The indicators display the status of the system as follow:
Indicators
Pre-fault alarm
Red indicator
Time delay
Red indicator
Leakage trip
7-segment display &
red indicator
ME-T fault
7-segment display & red indicator
Real-time leakage current
7-segment display
Zero-Phase Current Transformer
To operate with Mikro's ME-T series of current transformer
Delay time adjustment
0.05s - 0.5s (Step = 0.05s)
Mechanical
Mounting method
Standard 35mm DIN rail mounting
Approximate weight
0.38kg (excluding ME-T)
a - Trip status indicator
b - Model
c - Alarm status indicator
d - Up button
e - Down button
f - Reset/mode button
g - Integral test button
h - DP indicator
i - FUNCTION indicator
j - DATA indicator
Symbols
I
△
n - Sensitivity setting
△
t - Time delay setting
Flt 1 - Fault record 1 (Newest)
Flt 2 - Fault record 2
Flt 3 - Fault record 3 (Oldest)
