PRECISE
Load Break Switch
Type SF6
Standard Feature
Performance
•
The puffer interrupter has designed for
more 400 operations a rated normal
current interruption and 2000 operations at on-load.
•
24 VDC Battery is capable to sustain
operation in the event of loss of AC
power source.
•
Toggle mechanism could sectionalize
the feeder line in short time. (Close/
Open within 1 sec.)
•
The switch has been tested in accordance with IEC requirement.
Electrical Remote (SCADA)
•
Different control packages are available permitting either onsite operation
only or remote (SCADA) operation
from a central control station.
Switch Control Equipment
The control equipment shall be contained in a
control cabinet. The cabinet shall be suitable
for outdoor installation on a pole approximately 1.5-3 meters above ground level.
The control cabinet will be supplied with :
1.
Miniature circuit breaker and fuse for the
control circuit
2.
Surge protection equipment
3.
SCADA interface (control, status and
alarm)
4.
Two (2) 12 V DC batteries and charger
5.
Selector switch for LOCAL/REMOTE
6.
Indicating lamps (LOCAL/REMOTE, ON/
OFF and etc.)
7.
Alarm lamps and interlocking component
(Low gas pressure and Power supply
monitoring)
8.
Operation counter
9.
Weatherproof fitting for control cable
Certificate
Sale Office: PRECISE INTERNATIONAL CORPORATION LTD.
Address
: 1842 Krungthep-Nonthaburi Rd., Bangsue, Bangkok, 10800 Thailand
Telephone :(662) 910 9700-12 Telefax: (662) 910 9713-4 http://www.precise.co.th
06/07 : Rev.0
PRECISE
Load Break Switch
Type SF6
Performance Data
Descriptions
22 kV
Manufacturer
33 kV
Precise Electro Mechanical Works Co., Ltd.
Model / Type or Catalogue No.
ORAP21-396-20MT
Rated voltage (kV)
24 kV
33 kV
Rated frequency (Hz)
50
Rated normal Current (A) (max.)
630
400
Rated symmetrical interrupting current
630
Rated short-time withstand current, 1 sec (kA r.m.s.)
12.5
Rated short-time making current (kA peak)
31.5
Rated impulse withstand voltage (kV peak)
125
170
Rated mainly active load breaking capacity (A)
630
Rated transformer off-load breaking capacity (A)
21
Rated cable charging breaking capacity (A)
10
Maximum temperature of (K)
- Contacts
- Current Carrying Parts
- Mechanical Parts
30
30
5
Number of operations at rated normal current Interruption
400
Mechanical endurance, in number of operations
2,000
2
Rated pressure range of SF6 gas (kgf/cm )
1.2
2
Pressure of SF6 when locking device operates (kgf/cm )
0.7
Protection degree of assembled enclosure
IP 67 (SF6 tank)
Operation force of handle (kgf)
35 max
Conductor material of main circuit lead
Copper
200 mm
120 mm2
Creepage distance of porcelain bushing (mm)
600
900
Net weight (kg)
240
230
Cross section of main circuit lead
2
Factsheet No. : PMW-OSW20-0001
Factsheet State 3 Issued On : 20/07/2007
Revision No. 0 Date : 20/07/2007