MAG10x Series

 
MAG10x - UNIVERSAL GENERATOR / MOTOR PROTECTIVE GUARD
  • All-in-one unit combining Reverse Power, Overload, Over Current and Short Circuit functions
  • "Predictor" early action feature
  • One common alarm output eases installation
  • "Pathfinder" function (Over Current and Short Circuit)
  • One fast response analogue output (<50mS)
  • Optional Slave Indicator
Application
The digitally controlled MAG10x generator guard combines Reverse Power (R/P), Overload (O/L), Over Current (O/C) and Short Circuit protection (S/C) in one unit. Features depend on selected model.

Available for 3-phase 3-wire (2W3) and 4-wire (3W4) systems.

Normally the auxiliary voltage is supplied from the monitored voltage input. Use step-down transformer for input voltage higher then 460VAC.

Relay operation depends on the selected model. Only three functions are available in each unit. Other combinations are available on request.

A trip timer will reset if the fault is removed during count-down. Remote alarm reset input. Fixed hysteresis prevents relay "chatter".

Full functionality control during power-up/power-down, with 500mS power-out reservoir.

User settable trip levels and delays. Colour of LEDs indicates alarm status. LEDs flash during count-down.

The Pathfinder indicates the phase causing an overcurrent or short circuit trip by the flashing pattern of the relevant LED.

True RMS current measurements, not affected by any distorted waveform, provides precision (class 1.0) active/reactive power and highest up current protection. Less than 50mS processing time.

Fast response mA output signal proportional to FSD-range (A, V, Hz, kW or kVAr).

Optional slave indicator with scale and status display.

The unit meets IEC60092-504 and the relevant environmental and EMC tests specified in IEC60068/60092 and IEC61000/60533 respectively, to comply with the requirements of the major Classification Societies.
 
Description
Over Current, Short Circuit and Reverse Power Guard
MAG100 (2W3) / MAG104 (3W4)
Both relays simultaneously trip after the full Reverse Power, Over Current or Short Circuit definite time delay. Depending on application either the NC or NO contact of relay R2 or R3 can be used to operate the generator breaker. The "opposite" relay may be used for alarm, etc. R1 is a separate Short Circuit alarm relay.
 
Over Current, Short Circuit and Reverse Power Guard
MAG100A (2W3) / MAG104A (3W4)
With three separate relays (R1, R2 and R3). R1 and R3 are normally energised (fail to safety), R2 is normally de-energised. Each relay will trip after the Reverse Power, Over Current or Short Circuit pre-set time delay.
 
Over Current, Short Circuit and Reverse Power Guard
MAG100E (2W3) / MAG104E (3W4)
R3 trips after the full Reverse Power, Over Current or Short Circuit definite time delay. Depending on application either the NC or NO contact can be used to operate the generator breaker. R1 and R2 are additional alarm relays and can be used to provide an alarm signal to an alarm system or PM-System.
 
Over Current, kW Overload and Reverse Power Guard
MAG100C (2W3) / MAG104C (3W4)
With three separate relays (R1, R2 and R3). R1 is fail safe and energises when the unit is powered. R2 & R3 are normally de-energised. Each relay will trip after the Reverse Power, Overload or Over Current pre-set time delay.
 
2 x Over Current and Reverse Power Guard
MAG100D (2W3) / MAG104D (3W4)
Both R1 & R3 simultaneously trip after the full Reverse Power or Over Current definite time delay. Depending on application either the NC or NO contact of relay R1 or R3 can be used to operate the generator breaker. R2 is a separate Over Current alarm (O/C2) with individual setting. This can be used as a preferential trip or for early action functionality. R2 auto-resets when the fault is removed.
 
Over Current, Short Circuit and Reverse Power Guard with "PREDICTOR" early action (R1 & R2) function
MAG102 (2W3) / MAG106 (3W4)
One common relay (R3) for generator breaker trip, and two early action "Predictor" relays (R1 & R2) for preference load tripping and/or bus-tie breaker opening. R3 de-energises at trip. R3 trips after the full set Reverse Power, Over Current or Short Circuit definite time delay, and is used to open the generator breaker. R1 will trip 1 second before the set O/C trip and R2 will trip 200mS before the set S/C trip. The "Predictor" function may prevent an anticipated blackout.
 
Over Current, Short Circuit and Reverse Power Guard with "PREDICTOR" early action (R2) function
MAG102B (2W3) / MAG106B (3W4)
One common relay (R3) for generator breaker trip, and an early action "Predictor" relay (R2) for preference load tripping and/or bus-tie breaker opening. R3 de-energises at trip. R1 is an additional common alarm relay. R2, the predictor relay, will trip 1sec before R3 on O/C & 200mS (400mS optional) before R3 on S/C trip. The "Predictor" function may prevent an anticipated blackout. R3 trips after the full set Reverse Power, Over Current or Short Circuit definite time delay, and is used to open the generator breaker. The release time on O/C & S/C will be setpoint + the predictor time. (+200mS for S/C & 1 sec for O/C).

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