Industry

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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…
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  2C63 Definite Time Current Check Relay

  The 2C63 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 vercurrent applications. Definite time overcurrent relays offer advantages over inverse time protection in power systems which have a wide variation in source impedance. Faults can be cleared in relatively short times irrespective of the magnitude of the fault current, & coordination of…
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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…
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  2C720 700 Series AC Current Sensing Relay

  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 the…
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  2C73 High Impedance Differential Relay

  The 2V73 relay provides high speed differential protection for various items of power system plant including generators, busbars, motors & the individual windings of power transformers. The 2V73 is also suitable for restricted earth fault applications. The relay measuring element is basically an attracted armature unit of simple & rugged construction powered from a bridge rectifier. Each phase of the relay can be set from 25 to 325V AC in…
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  2C74 Instantaneous Current Relay

  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 employed.…
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  2C81 DC Current Sensing Relay

  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 breaker…
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  2H34-S Four Stage Frequency Relay

  The 2H34-S Series relay is a frequency monitoring relay with four stages of adjustable frequency pick up & drop out points. Each frequency set point can be set for under or over frequency operation & has an independent time delay driving an output relay. An undervoltage lockout is used to disable the four frequency outputs when the voltage falls below a preset level. Each of the four setting stages has…
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  2H750 700 Series 50Hz Frequency Sensing Relay

  The 2H750 and 2H760 Series relays are solid state instantaneous frequency sensing relays with electromechanical output contacts. Designed to monitor 50Hz (2H750) and 60Hz (2H760) AC supply systems these relays operate from the sensed voltage and do not require a separate auxiliary supply. 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…
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  2H760 700 Series 60Hz Frequency Sensing Relay

  The 2H750 and 2H760 Series relays are solid state instantaneous frequency sensing relays with electromechanical output contacts. Designed to monitor 50Hz (2H750) and 60Hz (2H760) AC supply systems these relays operate from the sensed voltage and do not require a separate auxiliary supply. 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…
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  2P48 Potential Selecting Relay

  The 2P48 relay is a phase failure relay suitable for 3 phase supplies. The relay is designed to automatically change over from the primary supply to the secondary supply if any phase of the primary supply has faulted. The 2P48 output relay is normally energised and drops out if the phase angle unbalance is greater than the pre-set, an under voltage or reverse phase sequence condition exists. A front panel…
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  2P49 Three Phase Voltage Monitoring Relay

  The main earth fault protection relays in distributions systems, power stations & large manufacturing / processing plants can fail to detect a high impedance breakdown to earth causing hazard to human life & potential damage to plant & equipment. In these & other situations demanding extra sensitive earth fault protection, the 2P49 relay using solid state techniques, can be applied to detect earth currents down to 0.5% of the CT…
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  2P740 700 Series Fail, Reversal, Under voltage Relay

  The 2P740 Series relays are solid state voltage sensing relays with electromechanical output contacts. Designed for application on 3 phase AC voltage systems the 2P740 is ideally suited to monitor power supply phase angle imbalance, undervoltage and reverse phase sequence. The 2P740 measuring circuitry keeps the output relay energised while the 3 phase supply remains within the specified imbalance window thus providing failsafe system protection. In the event of any…
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  2SY212-S Synchronism Check Relay

  The 2SY212 synchronism check relay is designed to measure the phase angle between the monitored single phase voltages on the line & bus sides of a circuit breaker & verify that this angle is less than setting. If the measured angle has met this criteria for the time period defined by setting & the voltage magnitudes meet the criteria established by the Live Line/Bus & U/V Line/Bus settings, the output…
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  2T105 Multi Range Digital Setting Time Delay Relay

  The 2T105 time delay relay is particularly suitable for use in protection & control schemes where precision time delays are required. CB Fail A typical use is for providing a definite time delay in circuit breaker failure protection. For example: The transformer multi-trip relays energize the 2T105 timer & if the circuit breaker (CB) fails to clear the fault within the pre-set (0.6s) the timer times out & operates a…
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  2T749 700 Series Delay On Timer Relay

  The 2T749 Series relays are solid state general purpose time delay relays with electromechanical output contacts. Designed for application wherever a time delay is required with high accuracy, reliable and maintenance free operation. 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 the 700 Series provide a flexible, cost effective &…