Wiring
13
4.2.1 Power supply
Connector: Phoenix 7.62 GMSTB/GFKC
Overvoltage Protection
Power supply: 2 x HAW561
Surge arrester HAW651K
• for low voltage users 24/48V, single pole, requirement class C, basic component with plugged in
protection unit, defect display, 18 mm (0.71 in) housing width. Order code: 51003569
• for standard voltage users 115/230V, single pole, requirement class C, basic component with
plugged in protection unit, defect display, 18 mm (0.71 in) housing width. Order code: 51003570
L00-NXA820-04-00-en-001
!
Note!
The signal input with the NXA820 can be protected by a suitable overvoltage protection,
additionally to the overvoltage protection which is integrated in the instrument.
Terminal Meaning for AC version (90-250 VAC)
NXA821 - *1*******
Meaning for DC version (10.5-32 VDC)
NXA821 - *2*******
1L L+
2N L-
3 Potential equalization Potential equalization
Fuse 400 mA T Fuse 2 A T
Tankvision
Power supply:
2 x HAW561
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