OMRON K8AK-PHPower Supplies / In Addition/ Measuring / Motor Protective Relays/Component Protective Components

OMRON K8AK-PH Power Supplies / In Addition

K8AK-PH Phase-sequence Phase-loss Relay/Specifications
K8AK-PH Phase-sequence Phase-loss Relay/Catalog
K8AK-PH Phase-sequence Phase-loss Relay/Dimensions
K8AK-PH Phase-sequence Phase-loss Relay/Lineup
Purchase the OMRON K8AK-PH Component Protective Components

OMRON K8AK-PH Dimensions

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last update: April 1, 2014

• Greater resistance to inverter noise.

• Distinguishes between correct phases, phase sequence, and phase loss when power is turned ON.

• Supports phase loss detection when the motor is operating.

• 5 A (resistive load) at 250 VAC, DPDT x 1.

• Output status can be monitored using LED indicator.

• Ideal to prevent reverse operation of motors.

last update: April 1, 2014

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OMRON K8AK-PH specification
K8AK-PH Phase-sequence Phase-loss Relay/Specifications
last update: July 12, 2018
Ratings

Rated input voltage 3-phase, 200 to 480 VAC (3-wire)
Input load Approx. 4.1 VA
Operating time Phase sequence 0.1 s±0.05 s
Phase loss 0.1 s max. (when the voltage changes rapidly from 100% to 0% of rated voltage)
Reset method Automatic reset
Indicators Power (PWR): Green, Relay output (RY): Yellow
Output relays One DPDT relay (NC operation)
Output relay ratings Rated load
Resistive load
5 A at 250 VAC
5 A at 30 VDC
Minimum load: 24 VDC, 4 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life:
5 A at 250 VAC or 30 VDC: 50,000 operations
3 A at 250 VAC/30 VDC:100,000 operations
1 A, cos θ = 0.4 at 250 VAC: 100,000 operations
0.2 A, L/R = 100 ms at 48 VDC: 12,000 operations
Recommended fuse: NT00-6A
Rated operating voltage (Ue)
Rated operating current (Ie) AC-12 Ue:250VAC, Ie:5 A
AC-15 Ue:250VAC, Ie:1 A
DC-12 Ue:30VDC, Ie:5 A
DC-13 Ue:24VDC, Ie:0.9 A
DC-13 Ue:48VDC, Ie:0.2 A
DC-13 Ue:24VDC, Ie:0.05 A
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -25 to 65°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 to 0.59 N·m
Terminal wiring method Recommended wire
Solid wire: 2.5 mm²
Twisted wires: AWG16, AWG18
Note: 1. Ferrules with insulating sleeves must be used with twisted wires.
Note: 2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color N1.5
Case material PC and ABS, UL 94 V-0
Weight Approx. 130 g
Mounting Mounts to DIN Track.
Dimensions 22.5 × 90 × 100 mm (W×H×D)

Specifications

Allowable operating voltage range 85% to 110% of rated input voltage
Input voltage range 200 to 480 VAC
Input frequency 50/60 Hz (no presumed range)
Overload capacity Continuous 528 V
Phase loss detection level 80%±10% of rated input
Calculation Formula
= 1 - ((Highest phase-to-phase voltage - Lowest phase-to-phase voltage)/
Average three-phase phase-to-phase voltage)
Applicable
standards Conforming standards EN 60947-5-1
Installation environment (pollution level 2, installation category III)
EMC EN 60947-5-1
Safety standards UL 508 (Recognition), Korean Radio Waves Act (Act 10564),
CSA: C22.2 No.14, CCC: GB/T 14048.5
Insulation resistance 20 MΩ min.
Between external terminals and case
Between input terminals and output terminals
Rated insulation voltage 690 V
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between input terminals and output terminals
Rated impulse withstand voltage 6 kV
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency: 10 to 55 Hz, 0.35-mm single amplitude
10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance 100 m/s², 3 times each in 6 directions along 3 axes
Degree of protection IP40 (Terminals: IP20)
Conditional short-circuit current 1,000 A

Relationship of Mounting Distance between K8AK-PH Relays and Ambient Temperature (Reference Values)

The following diagram shows the relationship between the mounting distances and the ambient temperature.
If the relay is used with an ambient temperature that exceeds these values, the temperature of the K8AK may rise and shorten the life of the internal components.

last update: July 12, 2018

OMRON K8AK-PH catalog
K8AK-PH Phase-sequence Phase-loss Relay/Catalog

Catalog

CAD

English
Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name Catalog Number
[size] Last Update

K8AK-PH Catalog N183-E1-01
[1028KB] Jul 12, 201820180712 K8AK-PH Catalog

Measuring and Monitoring Relays Application Guide N222-E1-01
[1649KB] Jun 01, 201820180601 Measuring and Monitoring Relays Application Guide

OMRON K8AK-PH dimension
K8AK-PH Phase-sequence Phase-loss Relay/Dimensions
last update: April 01, 2014
Three-phase Phase-sequence Phase-loss Relay

K8AK-PH1

Optional Parts for DIN Track Mounting
DIN Tracks

PFP-100N
PFP-50N

last update: April 01, 2014

OMRON K8AK-PH lineup
K8AK-PH Phase-sequence Phase-loss Relay/Lineup
last update: April 01, 2014

Function Rated input voltage* Relay output Model
Phase sequence and phase loss monitoring 3-phase, 3-wire 200 to 480 VAC DPDT ×1 K8AK-PH1

* The power supply voltage is the same as the rated input voltage.

last update: April 01, 2014

NO. K8AK-PH

TYPE:Measuring / Motor Protective Relays Component Protective Components Measuring & Monitoring relays

DATE:2021-06-08

Associated products:
K8AK-VW Single-phase Overvoltage/Undervoltage Relay/Features K8DS-PH Phase-sequence Phase-loss Relay/Features

Rated input voltage	3-phase, 200 to 480 VAC (3-wire)
Input load	Approx. 4.1 VA
Operating time	Phase sequence	0.1 s±0.05 s
Phase loss	0.1 s max. (when the voltage changes rapidly from 100% to 0% of rated voltage)
Reset method	Automatic reset
Indicators	Power (PWR): Green, Relay output (RY): Yellow
Output relays	One DPDT relay (NC operation)
Output relay ratings	Rated load Resistive load 5 A at 250 VAC 5 A at 30 VDC Minimum load: 24 VDC, 4 mA (reference values) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations 3 A at 250 VAC/30 VDC:100,000 operations 1 A, cos θ = 0.4 at 250 VAC: 100,000 operations 0.2 A, L/R = 100 ms at 48 VDC: 12,000 operations Recommended fuse: NT00-6A
Rated operating voltage (Ue) Rated operating current (Ie)	AC-12 Ue:250VAC, Ie:5 A AC-15 Ue:250VAC, Ie:1 A DC-12 Ue:30VDC, Ie:5 A DC-13 Ue:24VDC, Ie:0.9 A DC-13 Ue:48VDC, Ie:0.2 A DC-13 Ue:24VDC, Ie:0.05 A
Ambient operating temperature	-20 to 60°C (with no condensation or icing)
Storage temperature	-25 to 65°C (with no condensation or icing)
Ambient operating humidity	25% to 85% (with no condensation)
Storage humidity	25% to 85% (with no condensation)
Altitude	2,000 m max.
Terminal screw tightening torque	0.49 to 0.59 N·m
Terminal wiring method	Recommended wire Solid wire: 2.5 mm² Twisted wires: AWG16, AWG18 Note: 1. Ferrules with insulating sleeves must be used with twisted wires. Note: 2. Two wires can be twisted together. Recommended ferrules Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact Al 1-8RD (for AWG18) manufactured by Phoenix Contact Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color	N1.5
Case material	PC and ABS, UL 94 V-0
Weight	Approx. 130 g
Mounting	Mounts to DIN Track.
Dimensions	22.5 × 90 × 100 mm (W×H×D)

Allowable operating voltage range	85% to 110% of rated input voltage
Input voltage range	200 to 480 VAC
Input frequency	50/60 Hz (no presumed range)
Overload capacity	Continuous 528 V
Phase loss detection level	80%±10% of rated input Calculation Formula = 1 - ((Highest phase-to-phase voltage - Lowest phase-to-phase voltage)/ Average three-phase phase-to-phase voltage)
Applicable standards	Conforming standards	EN 60947-5-1 Installation environment (pollution level 2, installation category III)
EMC	EN 60947-5-1
Safety standards	UL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14, CCC: GB/T 14048.5
Insulation resistance	20 MΩ min. Between external terminals and case Between input terminals and output terminals
Rated insulation voltage	690 V
Dielectric strength	2,000 VAC for one minute Between external terminals and case Between input terminals and output terminals
Rated impulse withstand voltage	6 kV
Noise immunity	1,500 V power supply terminal common/normal mode Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time
Vibration resistance	Frequency: 10 to 55 Hz, 0.35-mm single amplitude 10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance	100 m/s², 3 times each in 6 directions along 3 axes
Degree of protection	IP40 (Terminals: IP20)
Conditional short-circuit current	1,000 A

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.
Catalog Name	Catalog Number [size]	Last Update
K8AK-PH Catalog	N183-E1-01 [1028KB]	Jul 12, 201820180712	K8AK-PH Catalog
Measuring and Monitoring Relays Application Guide	N222-E1-01 [1649KB]	Jun 01, 201820180601	Measuring and Monitoring Relays Application Guide

Function	Rated input voltage*	Relay output	Model
Phase sequence and phase loss monitoring	3-phase, 3-wire 200 to 480 VAC	DPDT ×1	K8AK-PH1

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