ABB ZX2 - Page 58

58 ZX2 GAS-INSULATED MEDIUM VOLTAGE SWITCHGEAR
Hazard warning

open delta windings from the terminal
boards of the voltage transformers in
accordance with the circuit diagrams

windings using the grounding screw

Ground the circuit at one point only.
—
Fig. 3.3.7.6.5:
View of the terminal
board of a voltage trans-
former with open delta
winding: Grounding
screw (arrow) in isolated
position (no grounding)
—
Fig. 3.3.7.6.6:
View of the terminal
board of a voltage
transformer with
open delta winding:
Grounding screw (arrow)
in grounding position
(dn terminal grounded)
—
Fig. 3.3.7.6.5
—
Fig. 3.3.7.6.6