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Overcurrent Monitoring Relays
CKR series
combine overcurrent relays and reverse/independent time relays in a single device. These relays are used to protect transformers, motors, generators, and energy transmission lines in the energy distribution system against short circuits and grounding faults.
In order to provide top level protection, “selective protection” should be implemented. The main purpose of the selective protection is to limit the fault at minimum and disconnect as soon as possible. |
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Product Selection Table |
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pieces/Box |
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Product code |
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CKR-93T |
3-Phase+Ground Wire (Variable Inverse Delay and Fixed Delay for Phases and N Phases) 85-265 VAC/ DC |
4 |
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CKR-92T |
2相+Ground Wire (Variable Inverse Delay and Fixed Delay for Phases and N Phases) 85-265 VAC/ DC |
4 |
Specifications
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CKR-92T |
CKR-93T |
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Shell |
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size |
144x144mm PR17 |
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weight |
1,3kg/4 pieces/carton |
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Three phase protection |
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● |
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Grounding fault protection |
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● |
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measure |
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Electric current |
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work Electric current |
1A Ground Line, 5A Phase Line |
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accuracy |
Electric current In or Iset 5%;time 7,5% or 土40ms |
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burden |
<3VA |
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Overcurrent selection |
0.2-3.35x In 0.25 |
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Overcurrent Instantaneous |
2-17xl,Step1 |
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Absolute time |
2.5,5,15second 0.1-1 Step0.1 |
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Reverse time |
According to IEC255, ANSI (ordinary, extraordinary, extreme, long-term, medium) CKR-9XT series is not medium
Reverse delay. |
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Power waste |
0.1-1,Step0.1 |
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Power Supply |
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working voltage |
24VDC,
85- 265VAC/DC+10% |
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working frequency |
50/60 Hz |
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Power waste |
<2VA |
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input/ output
Output contact. |
1NO Phase line;
1NO Zero line;
10A/1400VA |
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environment condition |
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ambient temperature |
-5/+55℃ |
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Connect |
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install |
Use the rear terminal Panel installation |
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line type |
2 phase + zero line
3-Phase+ Zero line(about Electric current input) |
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Phase Fault Relay |
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No phase + asymmetry |
MK-01 |
MKC-01 |
MKS-01 |
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No phase + asymmetry+phase sequence |
MKC-03 |
MKS-03 |
MKC-04 |
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No phase + asymmetry+phase sequence+PTC |
MKC-03P |
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Non-phase+adjustable asymmetry+phase sequence+Adjustable on/off delay |
MKC-05 |
MKC-06 |
MKC-20 |
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Non-phase+adjustable asymmetry+phase sequence+Adjustable on/off delay+ PTC |
MKC-05P |
MKC-06P |
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No phase+phase sequence |
FR-02 |
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PTC |
PT-O1 |
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Current monitoring relay |
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low pressure+Adjustable on/off delay |
DGRC-01 |
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Overvoltage +Adjustable on/off delay |
GKRC-01 |
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Low Voltage + Overvoltage +Adjustable on/off delay |
GKRC-02 |
GKRC-03 |
GKRC-M2 |
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No phase+Low Voltage + Overvoltage +Adjustable on/off delay+phase sequence |
GKRC-02F |
GKRC-02FA |
GKRC-03F |
GKRC-20F |
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Current monitoring relay |
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Low current |
AKC-01D |
AKC-03D |
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Over current |
AKC-01A |
AKC-03A |
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Time relay |
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On delay |
MCB-30 |
MCB-60 |
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On delay+Off delay On |
MCB-7 |
MCB-8 |
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Flash device |
EF-10 |
EF-10T |
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On delay+Off Delay+On Flash Device+Off Flash Device |
MCB-9 |
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On delay+ Off delay + OnFlash device+ Off Flash device+Descent timer |
ERT-01 |
ERTC-01 |
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On delay+ Off delay + On delay，Off delay Control input + control input |
MCB-15 |
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On delay+ Off delay + On delay，Off delay Control input + control input+Symmetric Flash device |
MCB-20 |
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delay pulse |
DG-10 |
DG-60 |
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Star-shaped triangle |
SER-YU |
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Left to right |
SSR-2X |
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Dishwasher relay |
ERB-50 |
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Astronomical time relay |
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Astronomy + 15 Program |
DTR-10 |
DTR-10t |
DTR-14 |
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Astronomy+ 32 Program |
DTR-20 |
DTR-20t |
DTR-20M |
DTR-25 |
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Digital Time Relay+ 18 Program |
MCB-50 |
MCB-50t |
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