ABB ACS1000i air-cooled, Руководство пользователя

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03 POWER ELECTRONICS AND CABINET FEATURES
3BHS206977 E01 REV H ACS1000I AIR-COOLED USER MANUAL 42/174
Grounding the drive is possible after the main power supply has been disconnected, and the
DC link has discharged. When the DC-link voltage is below 50 V (DC), the lamp grounding
switch unlocked (1 in Fig. 3-10) on the door of the control compartment lights up to indicate
that the switch can be turned.
- Grounding switch : the switch can be turned from position not grounded (2 in in Fig. 3-10)
to grounded (3 in Fig. 3-10) and reverse.
- Combined input disconnector and grounding switch : with one switching operation, the
input disconnector first separates the drive from the main power supply and the grounding
switch then connects the DC link of the drive to the PE ground busbar.
Figure 3-10: Grounding the drive
(1) Lamp "Grounding switch unlocked"
(2) Grounding switch in not grounded position
(3) Grounding switch in grounded position
(4) Combined input disconnector and grounding
switch position I:
- Input disconnector is closed and grounding
switch is open (not grounded).
(5) Combined input disconnector and grounding
switch position 0:
- Input disconnector is open and grounding
switch is closed (grounded).
1
2 3
4
5