D I S T R I B U T I O N S O LU T I O N S
5
—
1. Technical data
1.1 Electrical Specifications
Rated voltage Ur
kV
12
17.5
24
Impulse withstand voltage Up
kV
Common value
75
95
125
Between open contacts
85
110
145
Test voltage at power-frequency Ud
kV
Common value
28
38
50
Between open contacts
32
45
60
Rated frequency
Hz
50/60
50/60
50/60
Rated current Ir
A
Busbar
630/800/1250
(1) (4)
630/800/1250
(1)
630/1250
(1) (3)
Feeder
630/800/1250
(1) (4)
630/800/1250
(1)
630/1250
(1) (3)
Admissible rated short-time withstand current
kA
Main circuit
16/20
(1)
/25
(2)
16/20
(1)
/25
(2)
16/20
(1)
Earthing circuit
16/20
(1)
/25
(2)
16/20
(1)
/25
(2)
16/20
(1)
Rated short-circuit duration
s
2/3
3
3
Rated peak current
kA
40/50/63
40/50/63
40
(3)
/50
(1)
Protection degree (IP code)
For enclosure
IP3X
IP3X
IP3X
For segregations
IP2X
IP2X
IP2X
For operating mechanism
IP3X
IP3X
IP3X
Mechanical strength of
switch-disconnector
Cycles
Closed/open
5000
5000
5000
Open/earthed
1000
1000
1000
SF
6
gas in switch-disconnector
Bar
Rated filling pressure
1,4
1,4
1,4
Minimum operating pressure
1,3
1,3
1,3
Quantity of SF
6
gas
Kg
0,25
0,25
0,25
(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
NOTE
Consult the manuals of the respective
apparatuses for the specifications of any
additional equipment, e.g. relays and circuit-
breakers
1.2 Internal arc withstand
classification
The internal arc withstand value is defined as
follows:
Current
Accessible sides
Arcing time
12,5 kA
AFL
1 s
16 kA
AF
1 s
16 kA
AFLR
1 s
21 kA
AFLR
1 s
25 kA (1) (2)
AFLR
1 s
(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
Содержание UniSec
Страница 37: ...DISTRIBUTION SOLUTIONS 37 Note...
Страница 38: ...38 UNISEC DIGITAL OPER ATION AND MAINTENANCE MANUAL Note...
Страница 39: ...DISTRIBUTION SOLUTIONS 39 Note...