Datasheet

MONITORING RELAY / 3-PHASE VOLTAGE
V4PF480Y/277VSYTK02
Art.Nr.: 2104200
V4PF480Y/277VSYTK02P
Art.Nr.: 2104210
Page 5 of 7
LED U
FAILURE
L1
L2
L3
R
21-22-24
LED U
FAILURE
L1
L2
L3
R
21-22-24
LED U
FAILURE
L1
L2
L3
R
21-22-24
LED T
FAILURE
PTC
R
11-12-14
When all the phases are connected in the correct sequence
and the measured asymmetry is less than the set value, the
output relay R
21-22-24
switches into on-position.
Phase sequence monitoring
When the phase sequence changes, the output relay R
21-22-24
switches into o-position.
Phase failure monitoring
When one of the three phases fails, the output relay R
21-22-24
switches into o-position.
Asymmetry monitoring
When the asymmetry exceeds the value at the ASYM-regulator,
the output relay R
21-22-24
switches into o-position. Reverse
voltages of a consumer (e.g. a motor which continues to run
on two phases only) do not eect the disconnection.
Temperature monitoring
If the supply voltage U is applied and the cumulative resistance
of the PTC-circuit is less than 3.6kΩ (standard temperature of
the motor), the output relay R
11-12-14
switches into on-position.
When the cumulative resistance of the PTC-circuit exceeds
3.6kΩ, the output relay R
11-12-14
switches into o-position. The
output relay R
11-12-14
switches into on-position again after the
cumulative resistance falls below 1.8kΩ.
FUNCTIONS
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