K8AB-PA View Datasheet(PDF) - OMRON Corporation

Part Name

Description

View to exact match

K8AB-PA

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

OMRON Corporation 

Nomenclature

■ Front

Terminal block

(See notes 1 and 2.)

Power indicator

Relay status indicator

Alarm indicator

Asymmetry rate knob

(ASY.)

Operating time knob (T)

Terminal block

(See notes 1 and 2.)

K8AB-PA

Indicators

Item

Meaning

Power indicator

(PWR: Green)

Lit when power is being supplied (see note).

Relay status indicator Lit when relay is operating (normally lit).

(RY: Yellow)

Alarm indicator

(ALM: Red)

Asymmetry voltage error indicator

The indicator flashes to indicate the error status after

the input has exceeded the threshold value while the

operating time is being clocked.

Note: The input across L1 and L2 is used for the internal power

supply. Therefore, the power indicator will not be lit if there is no

input across L1 and L2.

Setting Knobs

Item

Asymmetry rate knob

(ASY.)

Operating time knob (T)

Usage

Used to set the asymmetry rate to 2% to 22%.

Used to set the operating time to 0.1 to 30 s.

Note: 1. Use either a solid wire of 2.5 mm2 maximum or a ferrule with

insulating sleeve for the terminal connection.

The length of the exposed current-carrying part inserted

into the terminal must be 8 mm or less to maintain dielectric

strength after connection.

For 2.5 mm2 or

smaller solid wires

For ferrules with

insulating sleeves

8 mm max.

Recommended ferrules

Phoenix Contact

• Al 1,5-8BK (for AWG16)

• Al 1-8RD (for AWG18)

• Al 0,75-8GY (for AWG18)

2. Tightening torque

Recommended: 0.49 N·m

Maximum: 0.54 N·m

8 mm max.

6

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