thuba PS 830, Manual

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Manual BVS 19 ATEX E 080 X 27
Edition March 2020 thuba Ltd., CH-4002 Basel
Copyright Switzerland
4.1.2 Sinter metal throttle
While operation mode “leakage compensation”
a small amount of purging gas enters through
the sinter metal throttle SD840 into the Ex p-
housing to provide the desired overpressure.
Dispensable purge gas will be exhausted (at an
overpressure of 3-4 mbar) through the control
unit PS 850 S outlet valve.
4.1.3 Optional solenoid valve for purging
The installer can mount the solenoid valve in or
outside of the Ex pzc housing, see details from
manufacturer documentation.
4.1.4 Purge air outlet / Spark barrier
The purge air outlet (vent) LA 830 has a spark
barrier according to IEC 60079-2. The exhaust
air can be diverted direct to Ex area.
The solenoid valve and the aerial outlet LA 830
are to be mounted in the ex pz-cabinet with max-
imum distance to each other (e.g. arrangement
in the space diagonals).
4.2 Connecting and starting
4.2.1 Connecting instructions
The following limits shall be observed when mak-
ing connections in the Ex-e terminal box:
Note the following item while connecting:
Mains VOLTAGE Extreme caution is advised
when handling this device. High electrical
discharge is possible and can be fatal.
See Installation regulative IEC 60079-14 as
well as Conformity statement BVS 15 ATEX E
069 X and IECEx BVS 15.0061 X
Do not exceed terminal safety limits of each
terminal
Min. and max. clamping torque
min. 0.3 N.
max. 0,4 Nm
Min. and max. cross section
steep: 0.2 – 2.5 mm²
flexible: 0.2 – 2.5 mm²