DIN310C
Earth Leakage Relay User's Manual
A BRIEF OVERVIEW
1.
DESCRIPTION
a - Trip status indicator
c Up button
d Down button
e Reset button
f Integral test button
g DP1 indicator
a
c
d
e
f
g
h
i
Symbols
I - Sensitivity
t - Time delay
Flt 1 - Fault record #1 (Most recent)
n
Flt 2 - Fault record #2
Flt 3 - Fault record #3 (Oldest)
b
b Model
-
-
-
-
-
-
-
h FUNC display
i DATA display
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The DIN310C series is microprocessor based earth leakage relay designed for measuring the low-level current
from the live part of the installation to the earth in the absence of the insulation fault. A zero sequence current
transformer (ZCT) will be included in the DIN310C bundle and is connected to the relay and function as the
sensor for sensing the leakage current. All conductors of the circuit to be protected shall go through the ZCT.
Each individual DIN310C and ZCT are matched and calibrated together in the factory as a complete unit. Using
other ZCT that is not included in the bundle is inhibited and will affect the tripping accuracy. This earth leakage
relay series is mainly used for multipoint tankless water heater application. The sensitivity and tripping time delay
is fixed at 10mA and instantaneous tripping respectively.This series also allows users to be able to differentiate
between overload tripping or earth leakage tripping and has the ability to detect ZCT connection fault.
C
