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Over Current Relays
Three Phase Over Current & Earth Fault Relays
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Features |
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Display of currents, settings, trip data & trip history for analysis & trouble shooting |
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Built in self supervision & self testing feature to ensure continous reliability |
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Seperate indication for power ON & programming mode for relay fault |
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Seperate fault indication |
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In MC61C - communication with computer & breaker control through RS 485 port |
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Four user programmable output relays |
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Product Design Standards |
| Reference standards |
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| IEC 60255, IEC 61000, IS3231, IS8686 |
| Dialectric test |
IS 3231 / IEC 60255-5 |
| Impulse test |
IS 8686 / IEC 60255-5 |
| HF disturbance test |
IS 8686 / IEC 60255-22-1 |
| Electrostatic discharge test |
IEC 61000-4-2 |
| Electrical fast transient |
IEC 61000-4-4 |
| Radiated electro magnetic field test |
IEC 61000-4-3 |
| Surge immunity |
IEC 61000-4-5 |
| Ring wave test |
IEC 61000-4-12 |
| Voltage dips & interuption test |
IEC 61000-4-11 |
| Power frequency magnetic test |
IEC 61000-4-8 |
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Time - Current Characteristics (At TMS = 1)
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For trip time at TMS other than 1
Trip time = (Trip time at TMS = 1) x TMS OR 50msec whichever is more
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A: Normal Inverse 3.0 Sec.
B: Normal Inverse 1.3 Sec.
C: Very Inverse
D: Extreme Inverse
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Wiring Diagrams of Over Current Relays
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Company
