Maintenance
47/52
D000030875 en q
– E350 series 2, 1-phase ZCF100Ax/Cx – User Manual
© Gyr
For meters with software version M54:
If the so called register test (test of the meter constant or the gear
transmission error) is carried out not at a constant load point, but with a
constant injected amount of energy, a test time of 15 min is recommended
(minimum 10 min).
7.1.3
Optical Test Outputs
The red test diode is positioned on the faceplate. It supplies pulses with a
value of 1 Wh of the import or export energy measured. This corresponds
to a meter constant of 1’000 imp/kWh. For meter testing purposes, only the
rising edge is decisive.
7.1.4
Connection to a Meter Testing Device
To test the meter, connect it to a dedicated testing device.
The meter uses a voltage jumper whereby a spring contact connects the
voltage circuit of the meter to the phase terminal. By inserting a contact pin
of 2.5 mm diameter, the voltage and current circuits of the meter are sepa-
rated and the test voltage is connected via the contact pin. See Fig. 7.1.
Fig. 7.1 Voltage jumper with test voltage connection
Procedure:
1.
Connect the meter to the terminals of the testing device as shown in
the meter connection diagram and according to the usual testing
methods. Remove the access lock sliding piece, if present.
2.
To connect the test voltage, use a connecting cable with a contact pin of
2.5 mm diameter and 40 mm length (± 1 mm). Insert this pin in the
opening provided on the front of the terminal block, right above the
measuring terminals.
Keep voltage cables free from voltage when inserting
Touching live contact pins can be fatal.
