ABB UniGear ZS1 Instruction Manual

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5.6 Installation of the busbars
5.6.1 Preparation of the material
Before to fix the panels side by side be sure that the bushings are fixed according to the
chapter 3.3.1 at page 11.
• Clean the insulation on the busbar sections with a soft, dry cloth, and check for insulation damage.
Remove greasy or adhesive dirt as described in section 7.3;
• Busbar connections:
- The silver plated surfaces of the connections must be cleaned with a metal-free non-woven
cleaning cloth and thinly and by appling a thin layer of mechanical grease;
- The non-silver plated surfaces of the connections are either brushed with a wire brush, preserving
the grease film, or cleaned with a metal-free non-woven cleaning cloth and evenly greased with a
thin layer of mechanical grease;
• Prepare insulating covers 58 and lids 58.5 (figure 3, 67, 68) to suit the relevant busbar connections
and thread them onto the busbar. (For insulated busbars only).
Figure 67: 12/17.5kV panels, installation of the busbars. The lower picture shows the installation at the busbar ends.
29 busbar bushing
58 insulating cover
58.1 support for cover (at end panels only)
58.5 lid
58.6 washer, ISO 7089
58.7 washer, 25mm diameter

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