ABB UniGear ZS1 User Manual

7
Main parameters for panels with circuit breakers
Rated voltage
[kV] 7.2 / 12 17.5 24
(1)
Rated power frequency withstand voltage [kV / 1min] 28
(2)
38
(2)
50
Rated lightning impulse withstand voltage [kV] 75 95 125
Rated frequency [Hz] 50 / 60 50 / 60 50 / 60
Main busbar rated current [A] ...4 000 ...4 000 ...3150
Circuit-breaker rated current [A] ...4 000 ...4 000 ...3150
Peak current [kA] ...164 ...164 ...80
Internal arc withstand current [kA / 1 s] ...50 ...50 ...31.5
Internal arc withstand current [kA / 0.5 s] 63 63
Rated short time withstand current [kA / 3 s] ...50 ...50 ...31.5
Rated short time withstand current [kA / 1 s] 63 63
(1) 27.6 kV with VD4 according to CSA C22.2 No 31-10 is available
(2) 42 kV (63 kA version; GB/DL)
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3. Technical data
3.1 Electrical data
Main parameters for UniGear ZS1 17.5 kV panels with VD4G
UniGear ZS1
with VD4G-25
UniGear ZS1
with VD4G-40
UniGear ZS1
with VD4G-50
UniGear ZS1
with VD4G-63
Rated voltage [kV] 15
*
Maximum service voltage [kV] 15
Test voltage (50/60 Hz) [kV / 1min] 38
Impulse withstand voltage [kV] 95
Rated frequency [Hz] 50 / 60
Rated short-time withstand current 25 kA / 3 s 40 kA / 3 s 50 kA / 3 s 63 kA / 1 s
Symmetrical short-circuit current
Iscg Class G1
[kA] 16 25 50 50
Symmetrical short-circuit current
Iscg Class G2
[kA] 16 25 37 37
Peak withstand current [kA] 68.5 115 137 173
Internal arc withstand current 25 kA / 1 s 40 kA / 1 s 50 kA / 1 s 63 kA / 0.5 s
Rated current of the main busbars [A] …4 000 …4 000 …4 000 …4 000
Feeders rated current with natural
ventilation
[A]
1 250 1 250
1 600
2 000
3 150 3 150 3 150
Feeders rated current with forced
ventilation
[A] 4 000 4 000 4 000
UniGear ZS1 panel with VD4G circuit-breaker can be coupled with standard UniGear ZS1 panel with VD4/P circuit-breaker
* Contact ABB for higher values

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