DIN310 & DIN310E Earth Leakage Relay
User's Manual
A BRIEF OVERVIEW
1.
DESCRIPTION
The DIN310 and DIN310E are microprocessors based earth leakage relays designed for measure the
low-level current flowing from the live part of the installation to the earth in the absent of the insulation
fault. A zero phase current transformer 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.
For better fault preventive control of the system or equipment to be protected, DIN310E series comes
with a pre-fault alarm contact and a positive safety contact. The pre-fault alarm contact is activated
whenever the leakage current exceed 50% of the sensitivity setting. While the positive safety contact
is activated if the relay is power up and function correctly. The DIN310E series also built-in a digital
input port for remotely reset the relay after leakage fault trip, manual test trip or ZCT connection fault.
a - Trip status indicator
c Alarm status indicator
d Increment button
e Decrement button
f Reset button
g Integral test button
h DP2 indicator
i DP1 indicator
a
c
d
e
f
g
i
j
k
Symbols
I - Sensitivity setting
t - Time delay setting
Flt 1 - Fault record #1 (Most recent)
n
Flt 2 - Fault record #2
Flt 3 - Fault record #3 (Oldest)
b
b Model
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h
j FUNC display
k DATA display
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