Product Description General YC9VA votage and current display
relay is a microprocessor-based voltage monitoring device for
single-phase AC networks to protect electrical equipment from surge
voltage. The device analyzes the main voltage and displays its
current value on a digital indicator. Load is switched by
electromagnetic relay. The user can set the current voltage value
and delay time through the button. The value is stored in
non-volatile memory. Aluminum wires and copper wires can be used
for connection.Application YC9VA/YC9VA2 voltage and
current display relay used in administrative, industrial and
residential buildings and has the function of protecting
single-phase lines: Undervoltage protection; Overvoltage
protection; Working under voltmeter mode; Overcurrent
proteciton. Operation When a voltage is applied to the
device, the digital indicator will display the current value of the
voltage in the network. A flashing light indicates that there is no
voltage on the output of the device. If the supply voltage is
within the set range, after Ton (default is 30 seconds), the load
will turn on and the indicator will stop flashing. If the voltage
is not within the specified range, the load will not be connected
to the line until the voltage returns to normal. Meantime, if the
voltage is lower than the set lower limit during the restart, the
error indicator will flash. If the voltage is higher than the set
upper limit, the error indicator will remain on. Product
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