Proudová ochrana

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  2C138 Sensitive Earth Fault Relay

  The main earth fault protection relays in distributions systems, power stations & large manufacturing / processing plants can fail to detect a high impedance break down to earth causing hazard to human life & potential damage to plant & equipment. In these & other situations demanding extra sensitive earth fault protection, the 2C138 relay using solid state techniques, can be applied to detect earth currents down to 0.5% of the…
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  2C139 Shaft Overcurrent Protection Relay

  Funkce High sensitivity (0.1% of In) Tuned to 150 Hz or 180 Hz Fundamental & HF noise suppression Optional reset functions Instantaneous (Fast), definite time, count down 40-300V DC auxiliary supply Power supply fail relay drops out if the auxiliary supply fails. Optional 20-70V DC supply Low CT burden & high thermal rating Optional 1A or 5A CT input Instantaneous pick up LED Configurable output contacts 0-31s time delay (125ms…
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  2C63 Current Check / CB Fail Relay

  Description The 2C63relays are three pole current detectors designed specifically for CB fail applications. A critical requirement is for a fast reset characteristic which is achieved through the use of air core CT’s. The low burden auxiliary supply makes the relay suitable for continuous energisation. Harmonic filtering is employed to minimize output relay chattering. Fully solid state sensing & measuring circuitry is employed with each phase current setting continuously adjustable…
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  2C65 Current Check Relay

  The 2C65 Series relays are adjustable AC current sensing relays designed for high or low voltage power systems where they can be used in a large number of overcurrent applications. The 2C65 Series relay is a three pole current detector with independently adjustable sensing circuits driving a common adjustable digital setting timing element. Five (5) status inputs & eight (8) relay outputs are provided as standard to allow the 2C65…