GKRC-02FA - Uncategorized ENTES - Free user manual and instructions

Product Type	Voltage Monitoring Relay
Brand	ENTES
Model	GKRC-02FA
Supply Voltage	220-240 V AC (refer to side label)
Supply Frequency	48-63 Hz (50/60 Hz for GKRC-02FA)
Power Consumption	30 VA / 2 W (50 Hz)
Measurement Method	True RMS
Over Voltage Setting Range	410-510 V AC (phase-to-phase)
Under Voltage Setting Range	270-370 V AC (phase-to-phase)
Delay Time (Off)	0.1-20 sec (adjustable)
Reset Delay (On)	0.1-20 sec (adjustable)
Output Type	1 Inverter relay, 6 A, 250 V AC, 200 VA (cosφ=1)
Protection Functions	Over voltage, Under voltage, Phase sequence
Weight	200 g
Protection Class	IP20 (terminals), IP40 (front panel)
Operating Temperature	-5°C to +55°C
Cleaning	Use a dry cloth only; do not use solvents
Safety	Disconnect power before working; do not remove front panel when live
Standards	EN 60255-6, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4
Mounting	On DIN rail or panel (inside panel)

Frequently Asked Questions - GKRC-02FA ENTES

What does the GKRC-02FA voltage monitoring relay do?

The GKRC-02FA monitors three-phase voltages for over voltage, under voltage, and phase sequence faults. It opens its relay output when a fault is detected, protecting connected equipment.

How do I adjust the over voltage limit?

Use the 'Max.' adjustment knob on the front panel. Turn it clockwise to increase the over voltage limit or counterclockwise to decrease. The setting range is 1.05-1.30 x Un (410-510 V AC for phase-to-phase).

How do I adjust the under voltage limit?

Use the 'Min.' adjustment knob. The range is 0.7-0.95 x Un (270-370 V AC for phase-to-phase). Turn clockwise to increase the limit (less sensitive) or counterclockwise to decrease.

What is the meaning of the LED indicators?

The device has two LEDs: U< (under voltage) and U> (over voltage), plus ON and OUT LEDs. Refer to the table in the manual: for example, both U< and U> steady ON indicates voltage within limits; flashing indicates temporary fault.

How do I set the delay times?

Use the 'Delay' knob for the fault delay (0.1-20 sec) and 'Reset Delay' knob for the reconnection delay after fault clears (0.1-20 sec). Both are adjustable via knobs.

Can the over and under voltage protection be disabled?

Yes, you can deactivate each protection separately by turning the corresponding 'Max.' or 'Min.' knob to the 'OFF' position.

What happens if the neutral connection is lost?

For devices with capacitive supply, the neutral shift may occur. If the neutral is lost, the device may lose supply or measure incorrectly. For transformer or SMPS supplied devices, the relay opens and supply is cut.

How do I clean the GKRC-02FA?

Only use a dry cloth to clean the front panel. Do not use solvents or liquids, as they may damage the device.

What is the maximum cable cross-section for terminals?

The terminals accept 4 mm² stranded rigid cable, 6 mm² solid conductor, or 2x2.5 mm² solid conductor cable. Tightening torque is 0.5 Nm.

What standards does the GKRC-02FA comply with?

It complies with EN 60255-6 (product standard), EN 61000-6-2 (immunity), and EN 61000-6-3/4 (emission). It also follows LVD 73/23/EEC and EMC 89/336/EEC directives.

USER MANUAL GKRC-02FA ENTES

U<	U>	On	Out	Meanings of the Device LEDs
○	○	●	●	Voltage(s) are within the adjusted limits
●	○	●	●	Temporary Under Voltage Warning
●	○	●	○	Permanent Under Voltage Warning
○	●	●	●	Temporary Over Voltage Warning
○	●	●	○	Permanent Over Voltage Warning
●	●	●	○	Both Over and Under Voltage Warning
○	○	●	○	Unsufficient Supply Warning
○	○	●	○	Phase Sequence Fault

●LED ON Ⓞ LED OFF Ⓓ FLASHING

Function Table

Type	Protection Function			3-Phase4 Cable Star	3-Phase3 Cable Delta
	Over Voltage	Under Voltage	Phase Sequence
DGRC-01		●.		●
GKRC-01	●.			●
GKRC-02	●.	●.		●
GKRC-02F	●.	●.	●	●
GKRC-03	●.	●.			●
GKRC-03F	●.	●.	●		●
GKRC-02FA	●.	●.	●		●
GKRC-M2	●.	●.		Mono Phase

* This option may be deactivated by making adjustments on the device

BREAK OF THE NEUTRAL CONNECTION FOR DEVICES WITH NEUTRAL Measurement is done between Phase and Neutral for devices with capacitive supply. If the neutral connection is lost, the neutral point of the system shifts because of the asymmetrical phase loading. The device continues the take measurements according to the shifted neutral system point. When the neutral connection is lost on devices supplied with transformer and SMPS, the device supply is cut and relay of the device opens.

Over and Under Voltage Function Diagram

Delay=20sec.

General:

DGRC-01, GKRC-01/02/02F/02FA/03/03F relays are delay-off and delay-on capable voltage monitoring relays which have adjustable over and under voltage limits. They are used in 1-phase and 3-phase Air Conditioning systems, in electronic command and control systems, for protection of capacitors in compensation systems and for protection of equipments like motors.

Utilization and Working Principle:

By using the Over Voltage(Max.) and Under Voltage(Min.) adjustment knobs on the front side, the over and under voltage limits of the system that will be protected is determined.

The Delay knob on the front is used commonly for both the adjusted over voltage faults and adjusted under voltage faults.

The Reset Delay knob on the front is used commonly for all faults. The over voltage and under voltage protection options can be deactivated separately (By adjusting the Max. and Min. knobs to OFF position).

Protection Functions:

a) Over Voltage Monitoring: GKRC-01 / 02 / 02F / 02FA / 03 / 03F / M2 if one or many of the measured voltage(Phase/Phase-Phase) values are over the limit of the device breaks the delay time starts to count. When the Delay time is up, the relay of the device breaks the connection and the 'OUT' light turns off. When all of the measured voltages fail under the adjusted Over Voltage Value, "U>" light turns off and adjusted Reset Delay time is adjusted to the 'OFF' position, and "U" light turns off. When all of the measured voltage(Phase/Phase-Phase) values go over the '1.5x'unit, "U>" light turns on, the relay of the device breaks the connection and the 'OFF' position, and "U" light turns on, the relay of the device breaks the connection and the 'OFF' position, is adjusted to the 'OFF' position, the Over Voltage Protection function is disabled. b) Under Voltage Monitoring: GDRC-01, GKRC-02 / 02F / 02FA / 03 / 03F / M2 if one or many of the measured voltage(Phase/Phase-Phase) values are over the limit of the adjusted Under Voltage Value(μmin), the "U"-light turns on and the adjusted Delay time starts to count. When the Delay time is up, the relay of the device breaks the connection and the 'OFF' position, and "U" light turns on, the relay of the device breaks the connection and the 'OFF' position, is adjusted to the 'OFF' position, and the 'OFF' position, is adjusted to the 'OFF' position, the Over Voltage Protection function is disabled.

c) Phase Sequence Protection: GKRC-02F / 02FA / 03F

If there is a change in the phase sequence for whatever the reason, only the "ON" light turns on and the relay of the device breaks the connection without any delay.

Phase Sequence Fault Diagram

Insufficient Supply Voltage: DGRC-01, GKRC-01 / 02 / 02F / 03 / 03F / M2

DGRC-01, GKRC-01 / 02 / 02F / 03 / 03F / M2 are supplied from a 3 Phase capacitive source. The supply voltage on these devices equals to the mean value of voltages from all three phases. If this mean value is less than half the supply voltage, the relay gives an insufficient supply voltage warning (U< and U> LEDs flash in that order) and the relay breaks contact without delay.

DGRC-01 GKRC-01 / 02 / 02F With Neutral => (VL1+VL2+VL3)/3 < 115 VAC (F-N) GKRC-03 / 03F Without Neutral => (VL12+VL23+VL31)/3 < 200 VAC (F-F)

PRECAUTIONS FOR INSTALLATION AND SAFE USE

- Failure to follow those instructions will result in death or serious injury.

• Disconnect all power before working on equi

- When the device is connected to the network, do not remove the front panel.

Do not try to clean the device with solvent or the like.

- Only clean the device with a dried cloth.

- Verify correct terminal connections when wiring.

- Electrical equipment should be serviced only by your compedent seller.

■Mount device to the pane

No responsibility is assured by the manufacturer or any of its subsidiaries for any consequences arising out of the use of this material.

Connection Diagram

TECHNICAL PROPERTIES

Measurement and Supply Circuit
Supply Voltage (Un)	220, 230V AC DGRC-01, GKFC-01/02/02F02FAM2400V AC GKFC-03/03F
Supply Voltage Gap (U/V)	Please refer to the side label on the device.
Supply Frequency	48 ... 63 Hz50 / 90 Hz, (GKFC-02F/A)
Power Consumption (max.)	30 VA / 2 W (50 Hz.)
Measurement Method	True RMS
Settings
Over Voltage Setup (Umax.)	1.05...1.30× Un (% Scale)240 ... 300V AC (GKFC-01/02/02F/M2)410 ... 510V AC (GKFC-03/03F/02F/A)
Under Voltage Setup (Umin.)	0.7...0.95 × Un (% Scale)150 ... 210 V AC (DGRC-01, GKFC-02/02/F/M2)270 ... 370V AC (GKFC-03/03F/02F/A)
Hysteresis(for Umax and Umin)	Un + %3 (constant)
Delay-Oil (Delay)	0.1 20 sec. (0.1 ... 60m, and 0.1 ... 180m Manufactured if demanded )
Delay-On (Reset Delay)	0.1 20 sec. (0.1 ... 60m, and 0.1 ... 180m Manufactured if demanded )
Voltage Adjustment Accuracy	± 3%
Repetition Accuracy(Voltage)	± 0.5%
Accuracy of the Set Times	± 5% + 100 msec.
Repetition Accuracy(Time)	± 3%
Output
Output Type	1 Inverter, 6A, 25W, 200VA (Cotsp=1)
Electrical Life	10 ^
Mechanical Life	10 ^
Ambient Conditions
Operating Temperature	-5°C ... +5°C
Relative Humidity	<%80 (without condensation)
Connection
Cable Cross-sections for Terminals	4mm ^2 (12/AVG) stranded rigid cable6mm ^2 (10/AVG) solid conductor cable2x2.5mm ^2 (14/AVG) solid conductor cable
Screw-On Force	0.5 km (4.5in bus)
Body
Insulation	Inside the panel vertically or on to the rail
Material Type	Plastic Consistent with UL, 94 VD
Protection Class	IP 20 (Terminals), IP 40 (Front Panel)
Dimensions	Type PK, 28
Weight	100 gr. (Only GKFC-02FA 200 gr.)
Isolation
Isolation Voltage (EN 60255-5)	400 V
Isolation Coordination(EN 60255-5)	Exceeding Voltage Category III, Pollution Degree 3
Intriant Burst Voltage (EN 60255-5)	4 KW 1.2 / 90 uS
Dielectric Resistance (EN 60255-5)	2 KW AC 50 Hz, 1 minute.
Isolation Resistance (EN 60255-5)	>500 MOHM / 600 V DC
Followed Standards
EN-60255-6	Product Standard
EN-61000-6-2	Immunity
EN-61000-6-3, EN-61000-6-4	Emission
Directives/Regulations To Be Followed
73/23/EEC	LVD
89/336/EEC	EMC

Dimensions (mm)

Note: The contact resistance at ohmic load (eg: Incandescent bulb, Resistance devices) is 8A. It is recommended to use a contactor if the inductive load eg: AC motor, fluorescent, etc.) or capacitive load (eg: Led Drivers, UPS, Fluorescent (Electronic Ballast), etc.) switch. Otherwise adhesion may occur in relay contacts.