RI-tech s.r.o. > Produkty > Ostatní průmysl > Energetika > Ochranná relé > Proudová ochrana

Proudová ochrana

Relé pro sledování proudu poskytují vysokorychlostní nadproudovou ochranu. Relé pro snímání střídavého nebo stejnosměrného proudu navržená pro vysokonapěťové nebo nízkonapěťové napájecí systémy, kde mohou být použity ve velkém počtu nadproudových aplikací.

  • Mžikové proudové relé
  • Nadproudové relé s vlastním napájením

  • 2C138 Sensitive Earth Fault Relay

     Description 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…

  • 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…

  • 2C65 Current Check Relay

     Description 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…

  • 2C720 700 Series AC Current Sensing Relay

     Description The 2C720 Series relays are solid state current sensing relays with electromechanical output contacts. Designed for application on AC current systems the 2C720 is ideally suited to monitor current transformer outputs wherever high accuracy and reliable, maintenance free operation is essential. The 700 Series range of electronic measuring relays are manufactured as a modular approach to electrical system protection & control. Designed to meet rigid Australian & international specifications…

  • 2C74 Instantaneous Current Relay

     Description The 2C74 relay provides high speed overcurrent protection for various items of power system plant such as frame earth leakage protection of metal clad switchgear & tank earth fault protection of sub-station power transformers. The 2C74 relay is a single phase device built in a compact size 2M draw out case suitable for rack and flush mounting. Where 3 phase monitoring is required, 3 single phase units should be…

  • 2C81 DC Current Sensing Relay

     Description The 2C81 is a DC current measuring relay. The measured input current is derived from a mV drop across a current shunt. A switchmode power supply provides a very wide auxiliary operatingrange. A relay fail alarm is provided in the form of a C/O contact which is picked up when the auxiliary supply is healthy. The 2C81 relay may be applied to provide a trip signal to a circuit…