Mikro DIN310 User Manual

DIN310 & DIN310E Earth Leakage Relay
User's Manual
A BRIEF OVERVIEW
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a - Trip status indicator
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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.
Model
Alarm status indicator
Increment button
Decrement button
Reset button
Integral test button
DP2 indicator
DP1 indicator
FUNC display
DATA display
Symbols
I - Sensitivity setting
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t - Time delay setting
Flt 1 - Fault record #1 (Most recent)
Flt 2 - Fault record #2
Flt 3 - Fault record #3 (Oldest)
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