7 PERFORMANCE OF MONITORING AND CONTROL FUNCTIONS
7.1 VOLTAGE TRANSFORMER SUPERVISION
VTS I> pick-up Setting +/- 5% or 50 mA, whichever is greater
VTS I> drop-off 0.9 x Setting +/- 5% or 50 mA, whichever is greater
VTS I2> pick-up Setting +/- 5% or 50 mA, whichever is greater
VTS I> drop-off 0.95 x Setting +/- 5% or 50 mA, whichever is greater
VTS V< pick-up (P642) 70V +/- 5%
VTS V< pick-up (P643/5) 10V +/- 5%
VTS V< drop-off (P642) 95V +/- 5%
VTS V< drop-off (P643/5) 30V +/- 5%
VTS V2> pick-up (P642/3/5) 10V +/- 5%
VTS V2> drop-off (P642/3/5) 9.5V +/- 5%
Fast block operation < 25 ms
Fast block reset < 30 ms
Time delay Setting +/- 2% or 50 ms, whichever is greater
Pick-up and drop-off repeatability < 1%
7.2 CURRENT TRANSFORMER SUPERVISION
CTS I1 pick-up ratio Setting +/- 5% or 20 mA, whichever is greater
CTS I2/I1>1 pick-up ratio 0.95 x Setting +/- 5% or 20 mA, whichever is greater
CTS I2/I1>2 pick-up ratio 1.05 x setting +/- 5% or 20 mA, whichever is greater
CTS I1 drop-off ratio 0.95 x setting +/-5% or 20 mA, whichever is greater
CTS I2/I1>1 drop-off ratio Setting +/-5% or 20 mA, whichever is greater
CTS I2/I1>2 drop-off ratio Setting +/-5% or 20 mA, whichever is greater
Pick-up and drop-off repeatability < 3%
Time delay operation Setting +/-2% or 50 ms, whichever is greater
CTS terminal block operation < 25 ms
CTS differential block operation < 30 ms
CTS reset time < 25 ms
CTS disengagement time < 30 ms
7.3 POLE DEAD PROTECTION
Current pick-up 50 mA +/- 20 mA
Current drop-off 55 mA +/- 20 mA
Voltage pick-up 10V +/- 5%
Voltage drop-off 30V +/- 5%
DT operate < 50 ms
Chapter 21 - Technical Specifications P64x
466 P64x-TM-EN-1.3
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