K8AB-PA 데이터 시트보기 (PDF) - OMRON Corporation

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K8AB-PA

Three-phase Asymmetry and Phase-sequence Phase-loss Relay

OMRON Corporation 

K8AB-PA

Setting Method

1. Asymmetry

Asymmetry is set using the asymmetry operation knob (ASY.)

The setting can be between 2% and 22% of the rated input.

Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the

same level.)

Use this as a guide to set the asymmetry.

The rated input depends on the model and DIP switch setting.

Example: K8AB-PA1 with Pin 2 Turned OFF (Three-phase, Three-wire Mode) and Pins 3 and 4 Turned OFF (Rated Voltage of 200 V)

The rated input voltage is 200 VAC and the setting range is 4 to 44 V.

If the setting (ASY. knob) is at 10%, the asymmetry operation voltage is 20 V and an alarm will be output if the difference between

the minimum and maximum phases for two of the three phases exceeds 20 V.

2. Operating Time

The operating time is set using the operating time knob (T).

The operating time can be set to between 0.1 and 30 s.

Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the

same level.)

Use this as a guide to set the operating time.

If the input exceeds the asymmetry set value, the alarm indicator will start flashing for the set period and then stay lit.

Dimensions

Three-phase Asymmetry and Phase-sequence Phase-loss Relay

K8AB-PA1

K8AB-PA2

22.5

100

(Unit: mm)

5

90

72

5

8

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