Flux PTB 00 ATEX 4109 X, Оригинальное приложение

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Attachment Ex-protection Information for Drum and Container Pumps 13 / 24
ENGLI
SH
4.1 Equipotential bonding
If the motors are operated together with the pump, comprehensive, clear equipotential
bonding is essential (earthing, Fig. 2). All devices / components have to be integrated
into the equipotential bonding system prior to use in hazardous areas.
Fig. 2: Earthing in hazardous locations
> Connect the equipotential bonding conductor (earth wire) to the designated screw
on the explosion-proof motor and pump.
> If the connection between the motor and pump already provides a conductive path
(for pumps for flammable liquids), one of the equipotential bonding conductors may
be dispensed with.
> Mains connection (2) is to be established via an explosion-proof connector, an
explosion-proof terminal box or outside of the hazardous area.
> The hose connected to the pressure socket must not exceed a resistance of 10
6
Ohm between the hose ends. Only use hose lines (3) with conductive hose unions
(see TRbF 50 Annex B (R < 10
6
Ω).
> Remove paint and dirt from all connection points of equipotential bonding conduc-
tors and transition points of the containers to the electrically conductive base ground
to ensure good conductivity.
The electrically conductive base ground (4) must be an integral part of the equipotential
bonding system.
If a conductive base ground is not available, equipotential bonding conductors must be
connected to all barrels and containers.
Note!
Explosion protection at the connection point is not necessary if
the power socket or the terminal box is clearly located outside
the hazardous area.
2
3
1
4
Ω
Ω
Ω