OVER & UNDER VOLTAGE PROTECTION RELAY (40A)
GKE-40
GKE-40 over and undervoltage protection relay is designed to protect devices with sensitive operating
voltage values from errors that may arise from mains voltage.
It is suitable to use for loads up to a maximum of 40A.
Make the connections of the device according to the connection type. Otherwise, the device may be damaged. Adjust
the high and low voltage settings of the device according to the operating voltage values of the load you will use.
When the device is energized; If the mains (input) voltage value is between the high voltage and low voltage set
values set on the device, the device energizes the relay, if not, the device does not energize the relay and the error
led turn on, the mains (input) voltage value shown on the display flashes throughout the error.
Error state; If the mains (input) voltage value is between the high and low voltage set values (when the device is
not in error), the mains (input) voltage value rises above the high voltage set value or falls below the low voltage
set value; the device waits for the set error waiting time, then the device de-energizes the relay, the error led turn
on, the mains (input) voltage value shown on the display flashes throughout the error.
The state of getting out of error; When the mains (input) voltage value is not between the high and low voltage
set values (when the device is in high or low voltage error), when the mains (input) voltage value returns to
normal (when the reaches a value between the high and low voltage set values); the device waits for the set error
waiting time, then the device energizes the relay, the error led turns off, the mains (input) voltage value on the
display lights steadily.
ERR
Adjustable Over&Under Voltage Relay (40A)
GKE-40
SET
TIME UP DOWN
7
6
1 2 3
4
5
1 - SET Button: This button is used to save after
setting/changing high/low voltage setting values a nd
error wait time.
2 - TIME button: To set the error waiting time, this
button is pressed for 1 second, then the error waiting
time saved on the device is displayed on the screen.
While the error wait time value is displayed on the
screen, the desired value is set by using the UP /
DOWN buttons. The set value is saved by pressing the
SET button.
3 - UP button: To set the high voltage set value, this
button is pressed for 1 second, then the high voltage
set value saved in the device is displayed on the
screen. While the high voltage setting value is
displayed on the screen, the desired value is adjusted
by using the UP / DOWN buttons. The set value is
saved by pressing the SET button.
4 - DOWN button: To set the undervoltage set value, this button is pressed for 1 second, then the undervoltage
set value saved in the device is displayed. While the undervoltage set value is displayed on the screen, the desired
value can be set by using the UP / DOWN buttons. The set value is saved by pressing the SET button.
5 - Display Group: During normal operation, the input (mains) voltage value is displayed here, the screen lights up
steadily when not in error state, the display flashes in case of error (high or low voltage). During programming,
the value of the relevant program is shown on the display (high, low voltage and error wait setting values).
6 - Setting led: While the high, low voltage setting values a nd error wait times are adjusted by the user, this led
will flash. Ex .: Setting LED flashes while changing the setting by applying the explanations in items 1, 2, 3 and 4.
7 - Error led: In case of high or low voltage error, this led turn on.
Display and Buttons
General
Device Usage and Principle of Operation
1
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