FZ(R)N35-40.5(D) series indoor high-voltage vacuum load switch-fuse combination electrical appliances-Chennuo Electric

FZ(R)N35-40.5(D) series indoor high-voltage vacuum load switch-fuse combination electrical appliances

Indoor high-voltage AC vacuum load switch-fuse combined electrical appliance (referred to as combined electrical equipment) is a switchgear specially developed for wind power, photovoltaic and other new energy fields, widely used in 40.5KV combined transformer, Chinese-style prefabricated substation and other occasions, and its performance meets the requirements of the national standard GB16926 "AC high-voltage vacuum load switch-fuse combined electrical appliance". It has the advantages of large breaking capacity, safety and reliability, long electrical life, frequent operation, and basically no maintenance. It can protect the transformer from overload and prevent the equipment from running out of phase. The combination appliance is equipped with a visual isolation break and a grounding switch with closing ability, and can be equipped with an electric spring mechanism for remote operation. Ambient temperature: upper limit +40°C, lower limit -40°C, daily average temperature does not exceed 35°C; Humidity: the daily average is not 95%, the monthly average is not 90%; Water vapor pressure: the daily average value does not exceed 22kPa, and the monthly average value does not exceed 1.8kPa; Altitude: <3500m; Installation site: The surrounding air is not visibly affected by dust, smoke, corrosive and flammable gases, contamination by vapours or salt spray; Electromagnetic interference: The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.6 kV.

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Feature

Vacuum arc extinguishing is adopted, which has strong arc extinguishing ability and long electrical life;

It adopts the design of back disconnector, which has high operability and maintenance and installation;

It integrates load switching, isolation and grounding, with compact structure, reliable action and stable performance, and is equipped with high-voltage current-limiting fuse, which has perfect short-circuit protection function;

The special spring operating mechanism is adopted, which has low energy consumption and can be operated frequently;

Small size, easy to install and simple to operate.

Parameter

serial number	name		unit	Combination switches	load switches	grounding switches
1	Rated voltage		KV	40.5	40.5	40.5
2	Current rating		A	100Aand below	1250
3	Rated frequency		Hz	50	50	50
4	Rated short-circuit interrupting current		KA	31.5Aand below	一	一
5	Rated short-circuit closing current		KA	一	80	80
6	Rated peak withstand current		KA	一	80	80
7	Rated short-time withstand current		KA	一	31.5	31.5
8	Rated transfer (transfer) current		A	1700	一	一
9	Rated active load breaking current		A	一	1250	一
10	Rated closed-loop interrupting current		A	一	1250	一
11	Rated cable charging current		A	一	21	一
12	Rated short-circuit duration		S	一	4	4
13	Secondary circuit operating		V	Dc220	Dc220
14	Rated short time (lmin)	Control, auxiliary circuits	KV	2	2	一
	Power frequency withstand	voltage main circuit		Interpolar, ground-to-ground and vacuum fractures 95
		voltage main circuit		Isolation fracture 110
	Rated lightning impulse withstand voltage (peak)			Interpolar, ground-to-ground and vacuum fractures 185
15	Rated lightning impulse withstand voltage (peak)		KV	Isolation fracture 215
16	Main loop resistance		μQ	≤400 (Combination Appliances Except Fuse)

serial number	name	unit	Vacuum interrupter	isolated knife valve	grounding knife valve
1	Contact opening distance	mm	17±1	≥350	≥300
2	Contact overtravel	mm	5±1	一	一
3	Average opening speed	m/s	1.5±0.2	一	一
4	Average closing speed	m/s	0.6±0.2	一	一
5	Rated contact pressure	N	1000±150	260±30	390±150
6	The three-pole division and opening are different periods	ms	≤2	一	一
7	Contact closing bounce time	ms	≤3	一	一
8	Center distance between poles	mm	450±3	450±3	450±3
9	Cumulative thickness of contact wear	mm	3	一	一
10	The tentacle just closed position is skewed	mm	一	≤2	≤2
11	Mechanical life	times	10000	2000	2000

The electric parameters of the CT21 bomb operating mechanism equipped with the vacuum isolation load switch (-fuse combination electrical appliance). Permanent magnet single-phase DC energy storage motor

Model	Rated voltage	Rated output power	Normal operating voltage range
ZYJ220-53	-220	≤30W	80%~110% rated voltage
Opening solenoid (independent power supply)
Rated Operating Voltage (V)	-220	-110	-220
Rated Operating Voltage (V)	2.67	2.93	2
Rated electric power(W)	<587	<312	440
Coil resistance value at 201 (n)	30±3	17±1.7	110±10
Normal operating voltage range	65%~120 rated working voltage is reliably opened, less than 30% rated working voltage shall not be opened