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Pole Top SF6 Gas Insulated
Load Break Switch
for Power Distribution System thru 15.5kV, 25.8kV & 36kV
V. 2.0
Pole Top SF6 Gas Insulated Load Break Switch
for Power Distribution System thru 15.5kV, 25.8kV & 36kV
Pole Top SF6 Gas Insulated Load Break Switches are designed to meet growing
requirements for reliability of power distribution. Switches filled with SF6 gas as the
insulating and arc quenching medium with puffer principle in making and breaking
ensure the positive breaking of small inductive, mainly active load current, cable charging
current, magnetizing current and etc. They are manufactured under a quality system
conforming to ISO 9001.
Features
Manual and motor operation
The basic mechanism is operator independent quick close and quick open spring toggle mechanism.
The switch can be operated manually or it can be operated with an integrated motor drive for remote
and/or local control. The manual operating handle is free to operate regardless of the position of the
motor driven mechanism.
Stainless steel enclosure and safety devices
The switch enclosure is made of stainless steel plate (STS304L) and filled with SF6 gas. The completely
sealed enclosure provides maintenance free operation even in severe weather conditions. It is designed
to guarantee the safety even at the maximum fault capacity.
Polymer or porcelain bushing with silicone rubber boots
The switch can be provided with hydrophobic cycloaliphatic epoxy resin(HCEP), epoxy bushing with
silicone rubber boots or porcelain bushing. The high voltage terminal is provided with the NEMA
(or clamp stud) terminal or the molded cone type lead which has high dielectric strength even under
heavily polluted conditions.
Microprocessor based controller
Microprocessor based control cubicle for feeder automation is designed for outdoor pole mounting
on a separate external panel and is normally mounted low on the pole for ease of access. The basic
control cubicle is provided with detection of phase and earth faults from current sensing elements
and checks the live and dead line status from the voltage sensing element. The details of the fault
and event log can be stored and transmitted to the SCADA or remote control unit through modem.
Pole Top SF6 Gas Insulated Load
Break Switch
EARTH CABLE
CABLE BAND
CONTROL CABLE
CONTROL BOX
Metering
Voltage & current
Measures kW and kWh, power factor
Demand watts & VARs and frequency
Load profile data & ocillogram
Monitoring & Recording
Setting, metering and data recording
Counters Fault waveforms
Remote communication(ETMFC101-N1)
Ports: RS232, RS485, RJ45 (TCP/IP)
Protocols: DNP3.0, MODBUS, IEC60870-5-101/104
Built-in RTU
ETSWC101
ETMFC101-N1
Ratings
Rated voltage (kV)
15.5kV
25.8kV
36kV
Rated current (A)
630
630
630
50 / 60
50 / 60
50 / 60
16
12.5
12.5
41.6
32.5
32.5
Cable charging breaking current (A)
17
25
20
Power frequency withstand voltage(kA)
50
60
70
Lightning impulse withstand voltage(kA)
110
150
170
Frequency (Hz)
Short-time withstand current (kA) / 1s
Short-circuit making current (kA)
Insulation media
Operating mechanism
Arc extinguishing method
Control and operation function
SF6 gas
Spring toggle
Puffer
RTU built-in or Separate digital control
Rated voltage
110/220V(Option)
Power supply
DC 24V
Permeable voltage range
Control
85~110%
AC power frequency
withstand voltage
2,000V 1min
Basic Impulse Level
6kV
Enclosure
Stainless steel (STS304L)
15.5kV SF6 Gas Insulated Load Break Switch
Construction
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* Note. Product structure and arrangement shall be modified without notice. 201502
225-38 Choirubaekro, Bongdam-Eup, Hwaseong-City, Gyunggi-Do, Republic of Korea
Post code : 445-893
TEL: +82-31-299-8400
FAX : +82-31-299-8401/ 2
http://www.entecene.co.kr
E-mail : entec@entecene.co.kr