20 A1100 - Electronic Polyphase Meter
© Elster Metering Systems - M180 001 1E - 6.2005
14 PULSING OUTPUT
An opto-isolated pulsing output can be provided as an option. The output is available in the following
configurations:
Single rate meter - The output is connected to the meter's two auxiliary terminals and is fully
isolated.
Two rate meter - The output is referenced to neutral and brought out to one auxiliary terminal.
For 3 phase 4 wire meters the meter is non-isolated.
For 3 phase 3 wire meters the meter isolated.
The output will provide pulses proportional to:
• Import pulses only (Import kWh meter)
• Import + export pulses (Import/export meters and power flow insensitive meters)
The pulsed output pulse value can be configured independently of the test indicator pulse value.
The pulse duration is set at manufacture to one of the values shown below.
Output Characteristics
When the meter is in anti-creep mode the output does not pulse.
The pulse/kWh and pulse width is configured as indicated below.
Pulse width (ms) 10, 20, 30, 40, 50, 60, 80, 100, 120, 160, 200, 250 or equal mark-space (1)
Pulses/kWh 10, 20, 25, 50, 100, 200, 250, 500 or 1000 (Direct connected)
100, 200, 250, 500, 1000, 2000, 2500, 5000 or 10000 (CT operated)
Wh/pulse (2) 100, 50, 40, 20, 10, 5, 4, 2 or 1 (Direct connected)
10, 5, 4, 2, 1, 0.5, 0.4, 0.2, or 0.1 (CT operated)
Maximum voltage (Umax) 27V d.c.
Maximum current in On-state 27 mA
Minimum current in On-state 10 mA
Maximum current in Off-state 2 mA
(1), (2) see below re: representation of consumption.
Note: Care should be taken in selecting the combination of pulse width and pulses /kWh.
Avoid combinations that may give insufficient spacing between pulses at maximum load.
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