7
SEP LEMO12SD / LEM012SS 2015
device for the meter must be installed on the supply side, and it is
recommended that the overcurrent protection device is near the meter so that it
is convenience for the operator. The overcurrent protection device should
comply with the specifications of the building electrical design and all local
regulations.
-
This meter can be installed indoor directly, or in a waterproof meter-box outdoor,
in compliance with the local codes and regulations.
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The meter has to be installed in a good ventilated and dry place.
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The meter has to be installed in a protection box in dangerous or dusty
environment.
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The meter can be installed and used after being tested in accordance with the
specifications of the building.
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The meter can be installed on a 35mm DIN rail.
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The best way to install in an available height so that it is easy to read.
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When the meter is installed in an area with frequent surges due to e.q.
thunderstorms, welding machines, inverters etc, protect the meter with
apllicable Surge Protection Devices.
-
After finishing installation, the meter must be sealed to prevent tampering.
-
Connection of the wires should be done in accordance with the underneath
connection diagram.
1
4
L
N
3
6
20
S O
21
+
-
1
Inlet phase line
4
Inlet neutral line
3
Outgoing phase line
6
Outgoing neutral line
20 and 21 Pulse output contact
1.9 Operating
Working indication
There is a white LED which has two colors (green and red) while burning in the front
panel of LEM012SD and LEM012SS. When the meter works normally, this LED will
display green. When meter is going wrong or no power supply, the LED will turn off.
Consumption indication
There is a white LED which has two colors (green and red) while burning in the front
panel of LEM012SD or LEM012SS. When consumption happens, the LED will flash and
display red. The more quickly LED flash, the more consumption there is. For this LED,
the flash rate is 2000 impulses per kWh (0.5Wh/imp).
Reading the meter
LEM012SD / LEM012SS is equipped with a white backlight LCD display. During the
normal working hours, the meter will be burning this white backlight all the time. The
display will show the following energy data and indication message.