Electric Connection; Recommendations - Watts valpes VRX Mode D'emploi

Use only one relay for one actuator.
As stipulated in the applicable regulation, the connection to earth contact is compul-
sory for devices with working voltages exceeding 42 V.
The actuator is being always under power, it must be connected to a disconnection
system (switch, circuit breaker) to ensure the actuator's power cut. The latter must
be closed to the actuator, easy to reach and marked as being the disconnecting
device for the equipment.
The temperature of the terminal can reach 90°C.
In case of long cables, please note the induction current shall not exceed 1mA.
To optimize the installation security, please connect the failure feedback signal.
The actuator can tolerate temporary overvoltage of the electrical grid up to ± 10 %
of its nominal system operating voltage.
The selection of the cables and cable glands: the maximal operating temperature of
the cables and cable-glands must be at least 110°C.
It is necessary to connect all actuators to an electrical cabinet. The power supply
cables must have the RATED diameter for the maximum current supported by the
actuator and comply with IEC 60227 or IEC 60245 standards.
Our cable glands are designed for cables with a diameter between 7mm and
12mm. The white caps delivered with the actuator ensure a maximum tightness of 1
meter waterhead. For a deeper immersion, the three cable glands must be wired. A
cable gland is tight when it has been tighten by one turn ahead of contact between
rubber seal and nut.
The auxiliary limit switches must be connected with rigid wires. If the applied voltage
is higher than 42V, the user must foresee a fuse in the power supply line.
The feedback switches must be powered with the same voltage. The reinforced in-
sulation of the motor control allows voltages up to 250V AC/DC.
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