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Numerical Directional 2O/C+ 1E/F IDMT Relay |
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Product category : Relays
Ashida electronics pvt. Ltd. Designers, developer & maker of electrical power protection relays & scada systems. The company has attained iso 9001:2000 certifications from m/s. Bvqi, u.K. Ashida electronics pvt. Ltd offers ashida numerical directional 2o/c + 1e/f idmt relay adr135a is a directional 2 oc and 1 ef relay with instantaneous high set and programmable output to simplify feeder protection wiring. The adr135a is design to meet demand of low and medium switchgear control. The adr135a continuously monitors 2 phase and earth current, through ct connections. The high-speed micro-controller samples this current through a 12-bit a/d converter. The micro-controller performs powerful digital algorithms to find out amplitude of current signal, direction of power flow then this value is use for protection and metering function. All measurement is tuned to fundamental frequency. Each input current is also displayed on 16 x 2 lcd display for metering. The relay is having main three functions 1] protection 2] self-supervision 3] measurement. The key benefits of the ashida numerical directional 2o/c + 1e/f idmt relay are:
3 element [2phase + 1ef] over current idmt with instant trip.
Programmable [non- volatile] setting by local keys as well as remote setting by communication port.
Back - lit lcd display for settings.
Display of fault current. / load current.
Selection of curve: five selectable curves,
Normal inverse1 [c1], normal inverse2, [c2]
Very inverse [c3], extremely inverse [c4], long time inverse [c5].
Design using dsp technology
Latching of fault current.
Direction oc/ef characteristic.
Programmable mta +30, +45and +60 for phase and - 14, -30, -45 for ef.
Pass-word protection for setting.
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