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Three Phase Over & Under Voltage Protection Relay ADG37-DIN
£33.20
Availability:
In stock
SKU
ADG37 DIN
General
Microprocessor controlled. Three or single phase relay is used in systems exposed to over or under voltage, such as command, control or compensation systems and protects devices such as condensers, motors, air conditioners and compressors. It is divided into sub-categories depending on the voltage adjustment range, phase sequencing control, on or off start modes.
Phase Sequencing Control
For the models with phase sequencing control, when device is energized, if the phase sequence is wrong, over ( > Un ) and under ( < Un ) LEDS are turned on together and phase sequence error is indicated. Meanwhile, Normal LED (Un) is turned off and relay contact is open circuit. In case of phase sequence is correct and phase voltages are in adjusted percentage range, the delay time for turning the Normal LED on and energizing the relay depends on the Off Delay or On Delay type of device.
Delay Time Modes
There are two types, one is Off-Delay and the other is On-Delay.
Off Delay
If phase voltages are in the adjusted percentage range, normal LED turns on and relay contact is energized. When adjusted over or under voltage limit is exceeded 1-10 sec delay time is started. During this time interval, appropriate error LED is also on together with Normal LED and at the end of delay time, Normal LED is turned on and relay contact is de-energized. When the error condition is disappeared, Normal LED is turned on and relay contact is re-energized.
On Delay
If phase voltages are in the adjusted percentage range, adjusted delay time, 1-10 min, is counted and at the end of delay time Normal LED is turned on and relay contact is energized. When adjusted over or under voltage limit is exceeded, Normal LED is turned on and relay contact is de-energized immediately, without waiting any delay time. When the phase voltages return into adjusted normal range (also considering the difference), adjusted 1-10 min delay time is counted and at the end of this time, Normal LED is turned on and relay contact is re-energized.
Sudden Switch Off
When any phase voltage's difference respect to nominal voltage exceeds 35%, without any time delay Normal LED is turned off and relay contact is de-energized.
Voltage Adjustment Range
Umin= (0.70 – 0.95) x Un;
Umax= (1.05 – 1.30) x Un ; When the adjusted limits are not exceeded, Normal (Un) LED is on and the relay contact is energized.
TECHNICAL DATA
Rated Voltage : 3 Phase and 1 Neutral; 230 Vac)
Operating Range : (0.5 – 1.5) x Un ; (Un nominal voltage)
Frequency : 50/60 Hz
Over Voltage Adjustment Range: (1.05-1.30) x Un
Under Voltage Adjustment Range: (0.70-0.95) x Un
Delay Time Adj. : 1-10 min
Sudden Switch Off : Below Un x 0.65 and above Un x 1.35
Sudden Switch Off Time : 500 msec
Contact Current : Max. 5 A / 240 VAC
Power Consumption : < 8 VA
Device Protection Class : IP20
Connector Protection Class : IP00
Ambient Temperature : -5°C....+50°C
Connection Type : To connection rail in electrical panel
Dimensions : 35x90x58 mm
Microprocessor controlled. Three or single phase relay is used in systems exposed to over or under voltage, such as command, control or compensation systems and protects devices such as condensers, motors, air conditioners and compressors. It is divided into sub-categories depending on the voltage adjustment range, phase sequencing control, on or off start modes.
Phase Sequencing Control
For the models with phase sequencing control, when device is energized, if the phase sequence is wrong, over ( > Un ) and under ( < Un ) LEDS are turned on together and phase sequence error is indicated. Meanwhile, Normal LED (Un) is turned off and relay contact is open circuit. In case of phase sequence is correct and phase voltages are in adjusted percentage range, the delay time for turning the Normal LED on and energizing the relay depends on the Off Delay or On Delay type of device.
Delay Time Modes
There are two types, one is Off-Delay and the other is On-Delay.
Off Delay
If phase voltages are in the adjusted percentage range, normal LED turns on and relay contact is energized. When adjusted over or under voltage limit is exceeded 1-10 sec delay time is started. During this time interval, appropriate error LED is also on together with Normal LED and at the end of delay time, Normal LED is turned on and relay contact is de-energized. When the error condition is disappeared, Normal LED is turned on and relay contact is re-energized.
On Delay
If phase voltages are in the adjusted percentage range, adjusted delay time, 1-10 min, is counted and at the end of delay time Normal LED is turned on and relay contact is energized. When adjusted over or under voltage limit is exceeded, Normal LED is turned on and relay contact is de-energized immediately, without waiting any delay time. When the phase voltages return into adjusted normal range (also considering the difference), adjusted 1-10 min delay time is counted and at the end of this time, Normal LED is turned on and relay contact is re-energized.
Sudden Switch Off
When any phase voltage's difference respect to nominal voltage exceeds 35%, without any time delay Normal LED is turned off and relay contact is de-energized.
Voltage Adjustment Range
Umin= (0.70 – 0.95) x Un;
Umax= (1.05 – 1.30) x Un ; When the adjusted limits are not exceeded, Normal (Un) LED is on and the relay contact is energized.
TECHNICAL DATA
Rated Voltage : 3 Phase and 1 Neutral; 230 Vac)
Operating Range : (0.5 – 1.5) x Un ; (Un nominal voltage)
Frequency : 50/60 Hz
Over Voltage Adjustment Range: (1.05-1.30) x Un
Under Voltage Adjustment Range: (0.70-0.95) x Un
Delay Time Adj. : 1-10 min
Sudden Switch Off : Below Un x 0.65 and above Un x 1.35
Sudden Switch Off Time : 500 msec
Contact Current : Max. 5 A / 240 VAC
Power Consumption : < 8 VA
Device Protection Class : IP20
Connector Protection Class : IP00
Ambient Temperature : -5°C....+50°C
Connection Type : To connection rail in electrical panel
Dimensions : 35x90x58 mm
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