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874890

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Gas insulated load break switch

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Switchgear

Outdoor switch

Keyword： Gas insulated load break switch

Email:

overseas@farady.cn

Phone:

0577-62717577

Message

Details

LW3F type pole-mounted SF6 load break switch was used in 12kV,24kV,33kV rated voltage, rated current 400/630A; 50/60HZ with the load current; over load current of power line open circuit and opening and closing electric systems.

General

The switch can equipped with a controller with most advanced technical parameter.

LW3F-A type LW3F is manually LBS for choice.

LW3F-M type LW3F is a intelligent type LBS for choice.

It can automatically disconnect when the distribution line was break down.

It could operated by handle; Implement electrification and distant. The electric controller was installed in stainless steel cabinet. So it could use in any conditions.

LW3F series 15KV 27KV 38KV SF6 Load Break Switch01

Service Condition

a) Air temperature:

Maximum temperature: +40 ; Minimum temperature:-20.

b) Humidity:

Monthly average humidity 95%; Daily average humidity 90%.

c) Altitude above sea level:

Maximum installation altitude: 2500m.

d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

e) No frequent violent shake.

LW3F series 15KV 27KV 38KV SF6 Load Break Switch02

TECHNICAL DATA

No	Item		Unit	Data
1	Rated voltage		kV	12-20-33
2	Rated current		Hz	50/60
3	Rated insulation level (with SF6 gas 0.07Mpa)	lightning impulse voltage	kV	75/125/170
		Power frequency impulse voltage	kV	42/50/70
5	Rated current		A	630
6	Rated open circuit load current (0.07Mpa//20℃ /h)		A	630
7	Open circuit current under 0 pressure		A	630
8	Rate peak value withstand current		kA	50
9	Rated short-time closing current		kA	50
10	Rated short-time withstand current		kA/s	1月20日
11	Rated electric cable charge open circuit current		A	25
12	Rated wire charge open circuit current		A	16
13	Rated closed loop open circuit current		A	630
14	Excitation current		A	21
15	Rated current open circuit times			400 times
16	Rated working pressure		MPa	0.07
17	Each operating voltage and resistance			150

18	Gas relative leakage rate		year	1%
19	SF6 gas moisture content	Leave factory relative figure	ppm	150
		Switch working figure	ppm	300
20	Machine stable operation		times	6000
21	Rated operating voltage and assistant loop rated voltage		V	DC220;110
				AC 220;110
22	Weight	M type	kg	115
		A type		135

Product Structure

LW3F series 15KV 27KV 38KV SF6 Load Break Switch03

Product Characters:

High quality porcelain or Rubber bushing
Full comply with IEC std
Guarantee 4000 times operations
Environment friendly
Suitable for both Pole mounted or Hanging mounted
Reliable and Enhanced Life Expectancy
Ambient Temp:-40℃~+ 80℃

①	Operation Handle	②	ON/OFF Indication	③	Installation Bracket
④	Operating Mechanism	⑤	Interrupter	⑥	Hanging Lug
⑦	Cable Bushing

Controller

1.1 Description

LW3F series 15KV 27KV 38KV SF6 Load Break Switch04

Volt logic series line sectional load break controller is medium voltage overhead line grid monitoring unit, It can combined with load break switch for achieve of measure monitoring, fault analysis and event records. It gives us a safety power grid for cutting line fault and automatic recovery operation and power automation.

The controller is gathering with line protection, control, measurement and monitoring of voltage and current signals integrated automation and control devices outdoors.

The controller is a automatic management unit for single way/multi ways/ring network /two power sourcing, provided with all voltage and current signals and all functions.

The controller column switch intelligent controller supports:Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, power line carrier, RS232/485, RJ45 and other forms of communication, and can access other station premises equipment (such as TTU, FTU, DTU, etc.).

1.2 Protection functions

Protection functions	ANSI code	Name in Device
Phase overcurrent	50P	P.OC
Overload	49	Overload
Phase Time-Overcurrent	51P	P.Curve
Ground Overcurrent	50G/N	E.F
Recloser	79	Reclose
Phase overcurrent cold load pick-up	CLPU50	Cold Load
Switch-Onto-Fault		SOTF
Undervoltage	27	Under volt
Overvoltage	50P	P.OC

1.3 Metering

Phase current IA, IB, IC RMS, Zero Sequency
Voltage Uab, Ubc, Uca, U0
Active power, reactive power and power factor
Frequency

1.4 Control and monitoring

Switch control	94
Lockout Relay	86

1.5 Features

Protection configuration is complete, and all protection functions can be switched on and off flexibly.
13 channels digital signal input.
4 channels current measure.
6 channels voltage measure.
Large capacity flash memory can record at least 100 times of historical events and no data will loss even the power is off.

1.6 Records