VEGA VEGASWING 83 fail safe and signal conditioning instrument VEGATOR 526 Ex - Manual (Page 21)

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)