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Modulex3 Line MX3IPG2ANumerical integrated generator protection(Rotor and auxiliary protection): 64R - 27 d.c. - 59 d.c.

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Protection functions• Rotor earth fault detection based on

injection of a.c. low voltage(accessory X2/IPG2A) between therotor winding of the protectedsynchronous machine and ground.

• Two independent time thresholdsmeasuring the resistance of the earthfault (R

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Characteristics• Generator rated excitation voltage

1000 V d.c.

• Excitation circuit to groundcapacitance 5µF

• Injected voltage (X2/IPG2A)40 V

• Rated frequency fn50/60 Hz

• R< 200 to 4000ΩIndependent time

0.05 to 600 s

• R 10 to 100 mAIndependent time

0.05 to 600 s

• D.C. voltage measurement rangesselectable by internal bridges.

• Input resistance

• U-< 0.5 to 1.2 UnIndependent time

0.02 to 600 s

• U- 0.5 to 1.2 UnIndependent time

0.02 to 600 s

• U->> 0.5 to 1.2 UnIndependent time

0.02 to 600 s

• Auxiliary supply of MX3IPG2A

Uaux: 19 to 100 Vd.c.or: 19 to 72 Va.c.

Uaux: 64 to 300 Vd.c.or: 64 to 275 Va.c.

Burden: 5 W / 10 W d.c.

10VA / 20VA a.c.

• Auxiliary supply of X2/IPG2A

Uaux: 24 to 240 Va.c.

Frequency: 45 to 65 Hz

Burden: