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In three phase systems, when all phases are in correct order and
phases
are balanced, Normal LED turns on and the relay is energized.
Missing Phase : When at least one of phases L1, L2, L3 is missing,
phase
off LED turns on and relay de-energizes its contact.
Phase Sequence : If the phase sequence is correct, Relay On LED
turns
on and relay energizes its contact. If phase order is changed, Phase
Off
LED turns on and relay de-energizes its contact.
Phase Voltage Unbalance : Phase-phase voltage unbalance is
adjusted
using the knob located on the front panel of the device. If phase
unbalance
exceeds the adjusted limit, Phase Off LED turns on, relay deenergises its contact .
Voltage Asymmetry Adjustment (Phase Unbalance)(asym.%)
Phase to phase asymmetry is adjusted using the adjustment knob in
the
range of ±%6 .... ±%20
Technical Data:
Rated Voltage, Un : 3 Phases (3 x 380Vac)
Operating Range : (0,8-1,1) x Un (Un nominal voltage)
Frequency : 60 Hz
Energizing and
de-energizing difference : +%3
(15-16) : Normally Closed Contact
(15-18) : Normally Open Contact
Contact Current : max. 5A/250 VAC
Power Consumption : < 8 VA
Device Protection Class : IP20
Connector Protection Class : IP00
Ambient Temperature : -5 °C.......+50 °C
Humidity : %15.........%95
(without condensation)
Connection Type : Perpendicular to inner panel or to
connection rail
Dimensions : 58 x 90 x 35
PHASE FAILURE and SEQUENCE
MONITORING DEVICE (without Neutral)
48mm
15
18
16
L1 L2 L3
L1,L2,L3 : 3 x 380 V ac
3 phase 380 Vac
3P&3W
L3
N
L2
L1
Connection Scheme
M
3 ~
FKR2T-DIN (with PTC)
PTC Protection : If you have a device with PTC protection capability
(FKR3T-DIN), additional properties are equal with Thermistor Relay (TKR).
If you do not want to use this property, simply short circuit the PTC
connections.
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