ABB UniGear ZS1 Instruction Manual

39
5.4. Installation of the bushing
Before fixing the panels side by side (according the general drawings) bushings 29 (12÷24 kV) must
be fixed (for switchgear with busbar barriers only; refer to the table on page 13).
5.4.1 Bushing of 12/17,5 kV panels
Figure 61: 12/17.5kV panels - fixing bushings
29 nr. 1 bushing 31 nr. 8 M8 washer
30 nr. 8 8x25 screws 32 nr. 3 Rubber partition (busbar support)
5.4.2 Bushing of 24 kV panels
Assembly procedure for bushings – main (upper) busbar system:
• Insert bushing 29 for the lower busbar into bushing plate 28 from the right side, and the middle and
upper one from the left side (figure ).
Lower bus-tie system:
• Insert bushing 29 for the lower rear bus-tie into bushing plate 28.2 from the right side in contrast to
the procedure for the other two bushings (see Figure 8).
Figure 62: 24 kV panels - fixing bushings
28 nr. 1 bushing plate 35 nr. 12 8x25 screws
29 nr. 3 bushing 36 nr. 12 M8 washer
37 nr. 12 M8 die
30
29
31
32
37
28
36
35
29

ABB UniGear ZS1 Specifications

General

Rated Voltage	up to 24 kV
Rated Current	up to 4000 A
Frequency	50/60 Hz
Rated Short-Circuit Breaking Current	up to 50 kA
Rated Peak Withstand Current	up to 125 kA
Insulation	Air-insulated
Type of Switchgear	Metal-clad
Rated Short-time Withstand Current	up to 50 kA for 3s
Internal Arc Classification	IAC AFLR
Protection Degree	IP4X
Busbar System	Single and double busbar
Type Tested Assembly	IEC 62271-200
Dimensions	Varies depending on configuration
Weight	Varies depending on configuration