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Voltage Monitoring Relays
GKRC-DGRC-MCC Series
Summary
GKRC type overvoltage and undervoltage monitoring relays are used to protect single-phase or three-phase systems from voltage fluctuations and phase-sequence faults.
Note: These relays have the function of switching off immediately when any phase exceeds (or decreases) 50% of the rated voltage.
DGRC type undervoltage monitoring relay is used to protect single-phase or three-phase systems from continuous operation when voltage fluctuations occur.
¡ñNon-flammable case
¡ñTrack Installation or Panel Installation
¡ñProtection Level: IP20
¡ñEnvironmental working temperature: 5¡æ, +50¡æ.
¡ñIEC 60255-3, IEC 60255-6, IEC 60870-5, IEC 60529 |
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Product code |
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3- phase |
Single-phase |
Undervoltage |
Overvoltage |
Phase fault |
Phase sequence fault |
Interruption delay |
Turn off delay |
No zero line |
Auxiliary power supply |
DIN1 Track installation |
DIN2 Track installation |
Pieces / boxes |
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DGRC-01 |
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¡ñ |
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¡ð |
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¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-01 |
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¡ñ |
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¡ð |
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¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-02 |
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¡ñ |
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¡ð |
¡ð |
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¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-O2F |
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¡ñ |
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¡ð |
¡ð |
¡ñ |
¡ñ |
¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-02FA |
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¡ñ |
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¡ð |
¡ð |
¡ñ |
¡ñ |
¡ñ |
¡ñ |
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¡ñ |
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¡ñ |
10 |
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GKRC-03 |
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¡ñ |
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¡ð |
¡ð |
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¡ñ |
¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-03F |
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¡ñ |
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¡ð |
¡ð |
¡ñ |
¡ñ |
¡ñ |
¡ñ |
¡ñ |
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¡ñ |
10 |
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GKRC-M2 |
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¡ñ |
¡ð |
¡ð |
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¡ñ |
¡ñ |
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¡ñ |
10 |
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MCC-1D |
5-15 min Turn off delay |
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¡ñ |
¡ñ |
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¡ñ |
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¡ñ |
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¡ñ |
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10 |
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MCC-3D |
5-15 min Turn off delay |
¡ñ |
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¡ñ |
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¡ñ |
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¡ñ |
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¡ñ |
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10 |
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GKRC-20F |
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¡ñ |
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¡ñ |
¡ñ |
¡ñ |
¡ñ |
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¡ñ |
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¡ñ |
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10 |
¡ð May close Working principleRelay connects directly to the network, and the required times/Overvoltage limit can be adjusted by a knob. If all 3-Phase monitors Voltage numbers. If any phase Voltage exceeds 1,5xUn, Relay closes without delay (within 500 Millisecond). If all are within the preset limit, output Relay opens. By adjustable delay tripping between 0, 1 and 10 seconds, it can be avoided that if any phase Voltage is lower than 0.5xUn, Relay has no delay closure (within 500 Millisecond). If the Voltage peak is straight when counting, the malfunction tripping operation is caused. If the phase Voltage of any monitoring exceeds the set value, the Voltage value returns to the preset limit before the start of the delay time and the delay time ends, and Relay continues to work normally. Specifications
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GKRC-02 |
GKRC -02F |
GKRC -20F |
GKRC -02FA |
GKRC-03 |
GKRC-03F |
GKRC-M2 |
GKRC-01 |
DGRC-01 |
MCC-1D |
MCC-3D |
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Shell |
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size |
PK28 |
PK22 DIN 1 |
PK28 |
PK22 DIN 1 |
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weight |
0,25kg/10Carton / boxes |
0,1kg/10 Carton / boxes |
0,25kg/10Carton / boxes |
0,1kg/10
Carton / boxes |
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measure |
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Voltage |
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Undervoltage setting range |
150-210V |
(0,70-1,2)xUn |
270-370V AC |
150-210V |
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Overvoltage settin Range |
240-300V |
(0,8-1,30)xUn |
410-510V AC |
240-300V |
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Instant trip value |
0,5xUn 1,5xUn
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0,5xUn 1,5xUn |
0,5xUn |
168VAC |
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Instant trip time |
100ms |
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lagging |
3% |
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Power Supply |
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working voltage |
230VAC¡À10% |
230VAC,400VAC¡À30% |
auxiliary Power Supply190-260V AC |
400VAC¡À10% |
230VAC¡À10% |
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working frequency |
50/60 Hz |
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output /settin |
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Output contact |
1CO 8A 2000VA cos§æ=1 |
1NO 8A 2000VA cos§æ=1 |
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Delay time |
0.1 -20s |
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environment condition |
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ambient temperature/ humidity |
-5/ +55¡ãC ; 90% |
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Overvoltage category |
III |
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Connect |
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install |
Track installation;Screw terminal |
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line type |
3-Phase£¬Zero line |
3-Phase£¬Zero line |
3-Phase£¬ No zero line |
1 phase£¬Zero line |
3-Phase£¬Zero line |
1 phase£¬Zero line |
3-Phase£¬Zero line | |
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