ABB UniGear ZS1 Instruction Manual

47
Figure 74: 12-17,5 kV panels – Tee-off 1600÷4000A, busbars 3150A-3600A-4000A
41 nr. 4 10x60 screws
42 nr. 8 M10 washers
43 nr. 4 M10 nuts
45 nr. 1 spacer (5mm)
5.6.3.2 Busbars for 24 kV units
Busbars and branches are made of copper and both have a flat cross-section. Bushings are different
from the 12/17.5kV ones. They are single for each phase and have an electrode inside, which must
be connected to the busbar.
Busbars for 24 kV units are insulated by means of shrink sheaths and the connection points are covered
by insulating covers.
41
42
43
45
- 1250 A
- 1250 A
41
42
43
Figure 75: 24 kV panels – Tee-off 1250A, busbars 1250A
41 nr. 4 10x35 screws
42 nr. 8 M10 washers
43 nr. 4 M10 nuts

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