KW32-12 household high voltage intelligent spring air circuit breaker

KW32-12 outdoor high-voltage intelligent spring vacuum circuit breaker is a three-phase AC circuit breaker with a rated voltage of 12kV and a frequency of 50Hz. This product is an intelligent spring mechanism vacuum circuit breaker independently developed by our company. It can cut various loads of different natures and occasions of frequent operation, and has the ability to break short-circuit current many times. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises, and is more suitable for the transformation of power grids in the power sector.

Category: Product Center

key word:

断路器

Hotline:

+86-514-83900666

Related products

Product message

KW32-12 household high voltage intelligent spring air circuit breaker

Overview
KW32-12 outdoor high-voltage intelligent spring vacuum circuit breaker is a three-phase AC circuit breaker with a rated voltage of 12kV and a frequency of 50Hz. This product is an intelligent spring mechanism vacuum circuit breaker independently developed by our company. It is suitable for switching various loads of different natures and occasions of frequent operation, and has the ability to break short-circuit current many times. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises. Retrofit.

Citation Standards

GB1984
GB/T 11022
GB/T 311.1
GB/T 3309
DL/T 593
DL/T 402

AC high voltage circuit breaker
Common technical requirements for high voltage switchgear and controlgear standards
Insulation coordination of high voltage power transmission and transformation equipment
Mechanical test of high voltage switchgear at normal temperature
Technical Guidelines for Common Ordering of High Voltage Switchgear
Ordering technical conditions of AC high voltage vacuum circuit breaker

Ambient conditions used
◆Working environment temperature: -40～+70℃
◆Working environment humidity: 0～95%
◆Work site altitude: ≤3000 m
◆Wind pressure: ≤ 700 Pa
◆Icing thickness: ≤10mm
◆Outer insulation pollution level: Ⅳ
◆Earthquake intensity: ≤ 8 degrees

Note: This product is not suitable for places such as fire, explosion hazard, chemical corrosion and severe vibration.

Model description
Product model and meaning:

111

Features
◆Using three-phase strut structure, vacuum arc extinguishing, reliable breaking, small contact wear, maintenance-free;
◆Epoxy resin and silicone rubber composite insulation material, good pressure and weather resistance, no oil, no SF6, environmental protection and no pollution;
◆The operating mechanism adopts a miniaturized spring operating mechanism, the power of the energy storage motor is small, the energy consumption of opening and closing is low, and the reliability is high;
◆It can be equipped with an integrated isolation knife switch, with obvious visual disconnection point and anti-mistake interlocking device.

Dimensional drawing

1211

Ontology technical parameters
Circuit breaker switch technical parameters

Serial number	Name Name	Units	Parameter Number
1	Rated voltage	kV	12
2	Rated current	A	630/1250
3	Rated frequency	Hz	50
4	Rated lightning impulse withstand voltage	kV	Ground 75/Fracture 85
5	Rated short-term power frequency withstand voltage (1min)	kV	Wet test 34, dry test 42/fracture 48
6	Rated short-circuit breaking current	kA	20/25
7	Rated short-circuit breaking times	times	30
8	Rated thermal stability current (4s)	kA	20/25
9	Rated dynamic stable current	kA	50/63
10	Rated short-circuit making current	kA	50/63
11	Mechanical life	times	30000
12	Secondary circuit power frequency withstand voltage (1min)	KV	2
13	Nominal operating sequence		O-0.3S-CO-180S-CO
14	Net weight	KG	100

Mechanical parameters

Serial number	Name Name	Units	Ref Number
1	Itinerary	mm	11±1
2	Contact Spacing	mm	9±1
3	Overtravel	mm	3±1
4	Close time	ms	≤60
5	Opening time	ms	≤60
6	Open and close different periods	ms	≤2
7	Close bounce	mm	≤2
8	Average opening speed	m/s	1.0±0.2
9	Average closing speed	m/s	0.6±0.2
10	Mechanical times	times	30000
11	Main circuit resistance	μΩ	≤80
12	Main circuit resistance (with isolation switch)	μΩ	≤ 180

Feature introduction
Telemetry function: It can detect AC analog quantities such as voltage and current, and DC analog quantities such as battery voltage and temperature.
Remote signaling function: It can detect status information such as switch status signal, switch energy storage signal, battery low voltage alarm, etc., and has dual-position remote signaling processing function to support remote signaling displacement priority transmission.
Remote control function: radio frequency wireless remote control opening and closing. Equipped with a local/remote selection switch, which can be connected to the master station to remotely control the opening and closing.
Fault detection function: configure single-phase grounding, three-stage phase-to-phase protection, overload, anti-inrush current protection and other protection functions, and record the protection current.
Communication function: with serial port and network communication interface, built-in 101, 104 and other power industry standard communication protocols, can upload data to the master station through optical fiber/Ethernet, GPRS/CDMA, etc.
Self-diagnosis and self-recovery function: with self-diagnosis function, when internal software and hardware abnormalities are found, they can be recorded and reported in time, and the software has the function of self-recovery after power-on.
Power management function: support dual-channel AC backup power supply, use battery as backup power supply, and use soft switching technology to cut in seamlessly. When the main power supply fails, the backup power supply can be automatically and seamlessly switched on; it has the function of battery activation management, which can be realized automatically and manually Charge and discharge the battery.

Technical parameters of control box

Features	Metrics	Number and details of function points
Current sampling	5A/1A	4 (3-way phase current 1-way zero sequence current)
Voltage sampling	AC220V/AC100V	4 (2 line voltage or 3 line phase voltage 1 line zero sequence voltage)
remote input	empty node	7 (7-way opening, such as opening and closing position, energy storage position, etc.)
Communication input	AC165～265V	1 (normal configuration 1-way can be configured with 2-way automatic switching if required)
align switch	Flick switch	Opening and closing energy storage DC24V 300W
align switch	Permanent magnet switch	Coil DC220V40A
Communication protocol	IEC101 Balanced, Unbalanced IEC104 DNP3.0 ModBus

Control box performance parameters

feature	Units	Metrics
AC current loop overload capacity		2In, continuous work; 10In, 10s; 20In, 1s
AC voltage loop overload capacity		1.5Un continuous work
Remote Signaling Resolution	ms	≤2ms
Software anti-shake time	ms	0～6000ms can be set
Device Power Consumption	w	≤15w
Measurement accuracy	%	Voltage, current 0.5 %, active power, reactive power 1.0 %
Backup power		Maintain normal operation for more than 8 hours after AC power failure
Controlling output node capacity		DC24V/16A, AC250V/10A
Insulation Properties	MΩ	≥5MΩ
EMC		IV
Protection level	IP	IP54
Ambient temperature		-40℃～+70℃, the maximum temperature change rate, 1.0℃/min
Ambient humidity		Relative humidity 10～100 %, maximum absolute humidity, 35g/㎥

Control Box Dimensions