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Maintenance
© Gyr
D000030875 en q
– E350 series 2, 1-phase ZCF100Ax/Cx – User Manual
3.
After testing, remove the cable (voltage-free!) from the terminal cover.
The spring closes the contact and the voltage is connected again.
Insert the access lock sliding piece again, if necessary, and seal it.
7.1.5
Creep Test
A test voltage U
p
of 1.15 U
n
is used for the creep test (no-load test)
according to IEC 62053-21 (e.g. U
p
= 265 V with U
n
= 230 V).
Procedure:
1.
Disconnect the meter from the mains for at least 10 seconds.
2.
Switch on the test voltage U
p
and wait approx. 10 seconds. Both the
active (circle) and the reactive (diamond) anti-creep indication must
now be permanently on. The energy direction indicators are off.
L
1
k
h
7.1.6
Starting Test
Procedure:
1.
Apply a load current of 0.1% of the base current I
b
or, for MID-meters,
of the reference current I
ref
, e.g. 10 mA with I
b
=I
ref
=10 A, and the vol-
tage U
n
. The meter must remain in creep.
L
1
k
h
2.
Increase the load current to 0.5% I
b
(for MID: to 0.5% I
ref
) (i.e. 50 mA
with I
b
= I
ref
= 10 A). The energy direction arrow must appear within 10
seconds and both anti-creep indications must disappear. The optical
test output for active energy must start to flash.
L
1
k
h
+P
7.2
Cleaning
Danger of short-circuits
Never clean soiled meters under running water or with high pressure
devices. Water penetration can cause short-circuits. To remove normal dirt
like dust a damp cloth is sufficient. If the meter is heavily soiled, it should be
dismantled, if necessary, and sent to an authorised service centre, so that a
new plastic viewing window can be fitted.
