METERING
R
®
www.merkur-germany.com
Relay
METERING
R
®
Overload disconnection
When the meter has enough credit but the load exceeds the preset threshold (Unit kVA) meter will
flicker and trigger alarm after the preset “overload judgment time”, and then disconnect the relay;
and after “overload judgement time”, meter will connect the relay automatically. All judgment time
is configurable from 10s to 3600s.
If 3 Overload disconnections occur continually within 90 mins, then the meter relay has to be con-
nected manually by pressing White buttons 1 and 2 on keyboard.
Over voltage disconnection
When the voltage exceeds the preset threshold (Unit V) after judgment time, the meter will alarm
with flicker and disconnect the relay. The judgment time is configurable from 1s to 60s. When over
voltage disconnection occurs, user has to connect the relay by pressing the white buttons 1 and 4
on the keyboard.
Open Terminal cover disconnection
This function can be on or off. If this function is on, the meter will disconnect the relay when the
terminal cover was removed. In this situation, user needs PC software or a correction card to clear
tamper status to connect the relay.
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