Electrical connection, Cu-line, Vessel with cathodic corrosion protection – VEGA VEGASWING 83 fail safe and signal conditioning instrument VEGATOR 526 Ex User Manual
Page 21
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VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
21
Electrical connection
E2
E1
A2
A1
A1
A2
E2
E1
1
2
Typ
B62-27
Typ
B62-27G
d30
d32
E86 Ex
Overvoltage
arrester
min. 4 mm
2
Cu
Screen
optionally
overvoltage arrester
Note:
- Use suitable cable, optionally with metal cover or screen. Screen or metal cover must only be
connected to the overvoltage arrester. Screen or metal cover must not be earthed.
- The cable must have an outer isolation.
- The capacity of the screen must at least correspond to that of a 1,5 mm
2
Cu-line.
Earth / PA
connection terminal
Outer
isolation
Vessel with cathodic corrosion protection
Screen
Line length
≤
␣ 50 m
Metal housing
isolated mounted or
plastic housing
Overvoltage arrester
type B62 - 27 Ex 0
or B62 - 27 Ex
Outer
isolation
External
earth
terminal
Cathodic tank protection
2 … 24 V
(object voltage)
VEGASWING
VEGATOR
526 Ex
Ex-area
Not Ex-area
(control room)