ABB UniGear ZS3.2 User Manual

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1 Summary
1.1 General
The metal-enclosed, three-pole air-insulated
switchgear panels without disconnectors of
UniGear ZS3.2 series are factory-assembled,
type-tested indoor panels for a rated voltage
of 36/40.5 kV. They are designed as withdrawable
module type panels, and fitted with a single
busbar system. The withdrawable parts are
fitted with vacuum circuit-breakers.
Details of the technical design and configuration
of individual switchgears, such as the technical
data, detailed equipment lists for the individual
panels and comprehensive circuit documentation,
etc., can be found in the relevant order documents.
1.2 Standards and specifications
UniGear ZS3.2 switchgear panels comply with
the standards and specifications for factory-
assembled and type tested high voltage
switchgears to IEC publications 62271-200
and 62271-100. In addition, in accordance with
IEC 60529, the switchgear panels have degrees
of protection.
IP 4X for the enclosure and
IP 2X for the partitions.
The corresponding IEC publications, the national
or local safety at work regulations and the safety
regulations for production materials are to be
followed during erection and operation of these
systems. Above and beyond this, the order-related
data from ABB Xiamen Switchgear Co., Ltd. are
to be taken into account.
1.3 Service conditions
1.3.1 Normal service conditions
The switchgears are fundamentally designed
for the normal service conditions for indoor
switchgears IEC publication 62271-1. The
following limit values, among others, apply:
• Ambient temperature:
- Maximum +40°C
- Maximum 24 h average +35°C
- Minimum (according to
“minus 15 indoor class”) -15°C
• Humidity
- Highest average value measured
over 24 hours
Relative humidity 95%
- Highest average value measured
over 1 month
Relative humidity 90%
Remark:
With indoor installation, it is assumed that the
humidity within the enclosure can reach high
values, but that there is normally no condensation
on the installed equipment. Condensation can
be prevented by appropriate configuration of
the station building or switchgear room.
The maximum site altitude is 1000 m above
sea level.
1.3.2 Special service conditions
According to IEC 62271-100, the manufacturer
and user may agree on special service conditions
which deviate from the normal service conditions.
The manufacturer must be consulted in advance
about each special service conditions.
Examples are as follows:
• At site altitudes above 1000 m, the effects
of the reduction in dielectric strength of the
air on the insulation level are to be taken
into account
• Increased ambient temperatures must be
compensated for in the design of the busbars
and tee-off conductors, or the current carrying
capacity will be limited. Heat dissipation in
the switchgear panel can be assisted by fitting
additional ventilation facilities
SUMMARY 5

ABB UniGear ZS3.2 Specifications

General

Brand	ABB
Model	UniGear ZS3.2
Category	Industrial Electrical
Language	English