Product Manual A

4. Operation 11-2017

The following image illustrates how the pickup and dropout settings work.

4.4.1.1 Utility Under-Voltage Set Points

NOTICE

If the utility under-voltage pickup is set at 90%, then the dropout has to be set lower than 90%.

TABLE 3. UTILITY UNDER-VOLTAGE SET POINTS

Description Available Set Points

Under-voltage Pickup

(% of Nominal)

95%

90%

Under-voltage Dropout

(% of Nominal)

90%

85%

80%

70%

4.4.1.2 Under-Voltage Sensing

No. Description No. Description

1 Drop-out setting (204V) 4 Volts

2 Pick-up setting (216V) 5 85% of Nominal

3 Nominal set point (240V) 6 90% of Nominal

4.4.2 Generator Sensor

The generator sensor is a single phase sensor that monitors under-voltage and under-frequency

conditions. All the pickup and dropout settings are fixed and are not adjustable. The generator set under-

voltage and under-frequency set points are listed in the following table.