ES-12B 5 Terminal Single Phase Residential Electricity
Meter - Installation and Commissioning Guide
Copyright © 2020 EDMI Europe Ltd. All rights reserved
Version / Status: 1.0
Public
1.3 Different between ES-10 & ES-12
The ES-12B features an additional 100Amp latching relay which serves as a Load Control Switch
(LCS), connected to the 5th terminal. Thus ES-12B is fitted with two internal breakers (2x 100A bi-
stable relays) allowing to switch off or on power delivery to the end customer.
Terminal arrangement has a configuration Active - Neutral - Neutral - Active - Active, where the
output of the integrated LCS is the last Active.
Figure 1-1: ES-12B connection diagram
Note! Opening the main relay will cut supply to the 5
th
Terminal (LCS). Unlike the ES-10 where it’s
ACLS is operated independent of the main relay.
Key differences:
- 100A LCS relay in place of the ALCS 2A switch
- An extra terminal connection point
- Terminal 5 LCS switch in series with the main relay
Visually the ES-10B and ES-12B electric meters seem very similar and at first glance, can be
mistaken for one another. To distinguish between the two the model name, artwork and the
presence of the 5
th
terminal can be seen.
1.4 Specifications
For meter specifications, refer to the EDMI ES-12B Product Guide ‘Data Sheet’.
For Communications Hub specifications, refer to your Communications Hub documentation.
A1
la
N2
ln
N3
ln
A4
la
A5
la
Main
Relay 100A
ALCS
Relay 100A
L
N
L
N
L
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