ABB UniSec Посібник з експлуатації та технічного обслуговування - Сторінка 5
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D I S T R I B U T I O N S O LU T I O N S
—
1. Technical data
1.1 Electrical Specifications
Rated voltage Ur
Impulse withstand voltage Up
Test voltage at power-frequency Ud
Rated frequency
Rated current Ir
Admissible rated short-time withstand current
Rated short-circuit duration
Rated peak current
Protection degree (IP code)
Mechanical strength of
switch-disconnector
SF
gas in switch-disconnector
6
(1) Consult ABB for 21 kA/52.5 kAp
(2) For LSC2B classified units
(3) For Hysec 16 kA (1s) 40 kAp
(4) 25 kA 2s for LSC2A classified units
additional equipment, e.g. relays and circuit-
breakers
Common value
Between open contacts
Common value
Between open contacts
Busbar
Feeder
Main circuit
Earthing circuit
For enclosure
For segregations
For operating mechanism
Closed/open
Open/earthed
Rated filling pressure
Minimum operating pressure
Quantity of SF
gas
6
NOTE
Consult the manuals of the respective
apparatuses for the specifications of any
kV
12
kV
75
85
kV
28
32
Hz
50/60
A
630/800/1250
(1) (4)
630/800/1250
(1) (4)
kA
16/20
/25
(1)
(2)
16/20
/25
(1)
(2)
s
2/3
kA
40/50/63
IP3X
IP2X
IP3X
Cycles
5000
1000
Bar
1,4
1,3
Kg
0,25
1.2 Internal arc withstand
classification
The internal arc withstand value is defined as
follows:
Current
12,5 kA
16 kA
16 kA
21 kA
25 kA (1) (2)
(1) Only for units with withdrawable circuit-breakers up to 17.5 kV
(2) Only LSC2A 750 mm H2000
Table 3. Internal arc withstand classification
NOTE
UniSec switchgear must be installed
indoors, in conditions suitable for
electrical equipment.
This means that access must be restricted to
authorized personnel only
17.5
24
95
125
110
145
38
50
45
60
50/60
50/60
630/800/1250
630/1250
(1)
630/800/1250
630/1250
(1)
16/20
/25
16/20
(1)
(2)
(1)
16/20
/25
16/20
(1)
(2)
(1)
3
3
40/50/63
40
(3)
/50
IP3X
IP3X
IP2X
IP2X
IP3X
IP3X
5000
5000
1000
1000
1,4
1,4
1,3
1,3
0,25
0,25
Accessible sides
Arcing time
AFL
1 s
AF
1 s
AFLR
1 s
AFLR
1 s
AFLR
1 s
5
(1) (3)
(1) (3)
(1)