Load Test; Starting Test Active Part - Landis+Gyr E650 Series User Manual

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7.1.4 No-load test
7.1.5

Starting test active part

© Landis+Gyr
4. Enter test mode
5. Select required
value
6. Repeat step 3 for all values to be tested
7. Exit test mode
Examples
First value and value x are examples. The real values are defined in the
parameter settings and are the same as the operating display.
The measured values are displayed at the optical test outputs as shown in
the following table:
Mode Register on Display
Normal Some sort of register
mode
Test mode Reactive energy register
Active energy register or one of
not mentioned registers in this
table.
A test voltage U of 1.15 U
p
62053-21 (e.g. U = 265 V with U
p
Procedure:
1. Disconnect the meter from the network for at least 10 seconds.
2. Then switch on the test voltage U
this time the energy direction arrows must disappear. The red optical
test outputs are permanently "lit".
3. Switch on test mode (high resolution).
4. The meter must not deliver more than one pulse during the no-load
test. Check the energy levels for changes in test mode. They must not
increase by more than the value of one pulse (see faceplate).
Procedure:
1. Apply a load current of 0.1% of the base current I
0.1% of the reference current I
5 A – and the voltage U
The meter must remain in no-load.
is used for the no-load test (creep test) to IEC
n
= 230 V).
n
and wait approx. 10 seconds. After
p
(MID-meters) – e.g. 5 mA with I
ref
(three-phase in each case) and cosφ = 1.
n
D000030108 en m – E650 Series 3 – ZMD300AT/CT – User Manual
Maintenance
First value
Value x
Operating
display
Test output Test output
reactive active
|R| |A|
|A| |R|
|R| |A|
(IEC-meters) or
b
=I =
b ref