A Rrangements - Elster A1140 User Manual

46
A1120/40 - Electronic Polyphase Meter
Terminal Block (3 phase 4 wire shown)
Voltage connections
on a CT Meter.
Optional additional
Voltage terminal on
whole current meter
RJ 11 and Auxiliary Terminals
6 5 4 3 2 1
Terminal & RJ11 Numbering
Terminal
1
2
3
4
5
6
7
8
9
10
12
Auxiliary
Figure 5 - Terminal Arrangements
© Elster Metering Limited - M181 001 2G - 5/2010
Voltage Links shown in open position
(whole current meters only)
1 2
Element 1
Auxiliary Terminals
RJ11 Socket
Element 1 - Line in
- Voltage terminal
- Line out
Element 2 - Line In
- Voltage Terminal
- Line Out
Element 3 - Line In
- Voltage Terminal
- Line Out
Neutral In
Neutral Out
20 positive
21 negative
See Warning in Section 22 regarding protection for additional voltage terminals.
3 4 5 6 7 8
Element 2 Element 3
Main cover with voltage disconnect protection.
Note that this cover cannot be used if voltage terminals are fitted.
RJ11
1
2
3
4
5
6
Main cover removal or CT ratio programming switch
Terminal cover removal switch
9 10 12 20 21
Neutral Auxiliary
Terminals
Rx (Input)
Tx (Output)
Rx (Input)
No Connection
Zero Volts
Modem Power Supply (+) Output
Molex connector
to connect external
battery
RJ 11