ABB UniGear ZS1 User Manual

12
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4. Panel design and equipment
Doors and cover plates are thoroughly cleaned
and treated against corrosion before receiving a
high quality double coating of paint. The finishing
coat is in the standard RAL 7035 color (special
colors by agreement). Stoving completes the
procedure and provides considerable resistance
to impact and corrosion. The circuit-breaker
compartment and cable connection compartment
doors are pressure resistant and can either be
fitted with manual or screws closing systems
(central handle).
Ventilation of the panels
Openings in the outer enclosure are needed for
the purpose of ventilation in the case of certain
rated currents in the busbars and branch bars.
For incoming air to the circuit-breaker
compartment, the horizontal partition is
provided with air-vents.
IP4X degree of protection and safety in the case
of any release of hot gas due to an arc fault are
provided by flap in the horizontal partition.
Incoming Feeder, UniGear ZS1 12 / 17.5 kV, 3 600 A
Current
(ambient
temperature
max. 40°C)
Current
(ambient
temperature
max. 45°C)
Current
(ambient
temperature
max. 50°C)
Current
(ambient
temperature
max. 55°C)
FAN 1 FAN 2
Note
Circuit Breaker Current transformers
< 3 200 A < 3 070 A < 2 940 A < 2 800 A No -
fan is
stopped
≥ 3 200 A ≥ 3 070 A ≥ 2 940 A ≥ 2 800 A Yes -
fan starts
operation
Instruction for switching of cooling fans:
Incoming Feeder, UniGear ZS1 12 / 17.5 kV, 4 000 A
Current
(ambient
temperature
max. 40°C)
Current
(ambient
temperature
max. 45°C)
Current
(ambient
temperature
max. 50°C)
Current
(ambient
temperature
max. 55°C)
FAN 1 FAN 2
Note
Circuit Breaker Current transformers
< 3 200 A < 3 070 A < 2 940 A < 2 800 A No No
both fans
are stopped
≥ 3 200 A ≥ 3 070 A ≥ 2 940 A ≥ 2 800 A Yes Yes
both fans
start
operation
Incoming Feeder, UniGear ZS1 24 kV, 2 500 A
Current
(ambient
temperature
max. 40°C)
Current
(ambient
temperature
max. 45°C)
Current
(ambient
temperature
max. 50°C)
Current
(ambient
temperature
max. 55°C)
FAN 1 FAN 2
Note
Circuit Breaker Current transformers
< 2 200 A < 2 110 A < 2 020 A < 1 920 A No -
fan is
stopped
≥ 2 200 A ≥ 2 110 A ≥ 2 020 A ≥ 1 920 A Yes -
fan starts
operation
Incoming Feeder, UniGear ZS1 24 kV, 3 150 A
Current
(ambient
temperature
max. 40°C)
Current
(ambient
temperature
max. 45°C)
Current
(ambient
temperature
max. 50°C)
Current
(ambient
temperature
max. 55°C)
FAN 1 FAN 2
Note
Circuit Breaker Current transformers
< 2 700 A < 2 590 A < 2 480 A < 2 360 A No -
fan is
stopped
≥ 2 700 A ≥ 2 590 A ≥ 2 480 A ≥ 2 360 A Yes -
fan starts
operation

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