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KE-FKR4 (D)
Intelligent Voltage Phase Sequence Protector

Product Function
Phase Sequetion： (Seq) - - - - - - - - - - - -
-
In case of wrong phase order , Normal LED turned off and relay contact is not -
switch on. In this case if Reset button pushes seq warn displayed. If phase order
is corrected , Normal LED turned on and out relay switch on. 3F
Voltage Unbalanced： (unb)
The phase-phase voltage unbalance limit can be adjusted between(5%-20%) .
When it exceeds the adjusted limit , the device switched off its out contact at the 7NBY 7NJO
end of t-1 delay. In this case when pushing Reset button unb warn appear on VO C Y )ZT Y "TN Y
the screen. For the returning normal state, asymmetry values should under 20%
(hysteresis value). In this case at the end of t3 time Normal VOC
LED turned on and output contact switch on. If the phase-phase voltage )ZT
unbalance, return adjusted value shorter than t-1 time, output relay does not 7OPN
release its contact. Hysteresis is 20%. )ZT
VOC
Example：Let's say that asymmetry value is set to 15% for a 3×380VAC. -FWFM
In this case, relay contact switch off at (380-(380×0.15))=323 V. 3F
Switch on the contact is performed at 323+(380×15%×20%)= 334V. U U U U U
(20% is the hysteresis).
Over and Under Voltage ： (o-U),(u-U)

Under voltage (u-U) it can adjusted between Umin= (300- 370 V). 7
Over voltage (o-U) it can adjusted between Umax=(390-460 V). 0WFS 7PMUBHF - - -
If the voltage drops below the adjusted under voltage limit, when u-U shows on 6NBY P 6
the screen and device switch off its output contact end of the t-1 time 6NJO V 6 /PSNBM /PSNBM
Normal LED turned on .In this case when pushing Reset button u-U warn appear
on its screen.
6OEFS 7PMUBHF
If the voltage exceed the adjusted over voltage limit, Normal LED turned off and U
output relay switch off. In this case when pushing Reset button o-U warn appers U U U U
on its screen.
3F U

Connection Diagram And Dimensions

-
- 58mm 35mm
-
/
" " "

90mm 36mm 45mm 62mm

- / 4VQQMZ 7PMUBHF

$POUBDU $VSSFOU " 7"$ 32mm
48mm

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