43
8024250/18HT/V2-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-G
Subject to change without notice
INSTALLATION
5
5.10
Electrical installation
Electrical safety
Special safety instructions
WARNING:
Endangerment of electrical safety during installation and maintenance work
when the voltage supply is not switched off
▸
Before starting work on the device, ensure the voltage supply can be switched off
according to the valid standards using a power isolating switch/circuit breaker.
▸
Make sure the isolating switch is easily accessible, located near the system and
clearly marked (on/off switch).
▸
An additional disconnecting device is mandatory when the power isolating switch
cannot be accessed or only with difficulty after installation of the device connection.
▸
After completion of the work or for test purposes, the voltage supply may only be
activated again by authorized personnel complying with the safety regulations.
WARNING:
Endangerment of electrical safety through power cable with incorrect rating
Electrical accidents can occur when the power cable specifications have not been
adequately observed.
▸
Always observe the exact specifications in the Operating Instructions (Technical data
Section) when replacing a removable power cable.
WARNING:
Danger of electrical accidents
Incorrect performance of electrical work could result in serious electrical accidents.
▸
Electrical work on the device may only be carried out by electricians familiar with the
possible dangers.
NOTICE:
Device damage through short-circuit on the device
The internal electronics can be damaged when signal connections are established and
the voltage supply is switched on.
▸
Only carry out work on the device when the voltage supply is switched off.
DANGER:
Danger of explosion and expiration of the Ex-approval for the device when
using cable inlets and closures not approved for operation in explosive
environments
The cable inlets and closures are part of the explosion protection and must meet the
requirements of the relevant standards for explosion protection.
▸
Do not replace cable inlets and closures with other types not approved for use in
explosive atmospheres.
▸
Observe the dimensions of the cable inlets.
DANGER:
Danger of explosion through unsuitable screw fittings and cables
▸
Only use cables (according to valid standard) with suitable outer diameters.
▸
Protect cables against electrostatic charges.
▸
Lay cables in the Ex-area firmly, for example by using cable trays.
▸
Only open cable inlets used for cable installation. Keep the plugs. Refit the original
plug when a cable inlet must be closed again afterwards.
