Eaton PT 10, Инструкция по эксплуатации

Страница: 9 / 48

5 PT UNIT USER MANUAL
APRIL 2023 www.eaton.com.cn
Table 3. Advanced Protection Features (PT25 only, unless specified additionally)
Protection Unit Setting Note
Voltage Protection
Over-voltage Pickup V 180-720 adjustable Interval of 1
Over-voltage Delay s 1~ 300 adjustable Interval of 1
Under-voltage Pickup V 60-670 adjustable Interval of 1
Under- voltage Delay s 1- 300 adjustable Interval of 1
Voltage Unbalance Pickup % V 5- 25 adjustable Interval of 1
Voltage Unbalance Delay s 1- 300 adjustable Interval of 1
Current Protection
Current Unbalance Pickup % A 5- 25 adjustable Interval of 1
Current Unbalance Delay s 1- 300 adjustable Interval of 1
Phase Loss Pickup % A 75
Phase Loss Delay s 1- 240 adjustable Interval of 1
Power Protection
Reverse Power Pickup kW 1- 65500 adjustable Interval of 1
Reverse Power Delay s 1- 300 adjustable Interval of 1
Frequency Protection
Over-frequency Pickup Hz 40- 70 adjustable Interval of 1 When Phase-A phase voltage
exceeds 100V, the frequency
metering will start
Over-frequency Delay s 0.2- 5 adjustable Interval of 0.1
Under-frequency Pickup Hz 40- 70 adjustable Interval of 1
Under-frequency Delay s 0.2- 5 adjustable Interval of 0.1
Phase Sequence Protection
Positive Sequence (A-B-C)
3-phase voltage sequence is the same as the
setting, and the trip unit acts
When all three phase voltages
exceed 100V, the phase sequence
metering will start
Reversed Sequence (A-C-B)
Demand Protection
Current Demand Pickup x (I
n
) 0.2-1.0 adjustable Interval of 0.1 PT20/25 supports this function
Current Demand Delay s 15-1500 adjustable Interval of 1
Power Demand Pickup kW 1- 65500 adjustable Interval of 1
Power Demand Delay s 15-1500 adjustable Interval of 1
2. Protection and Metering Features