Compact Substation Smart Electrical Medium/High Fn8-40.5kv Sf6 Gas Insulated Circuit Breaker for Electrical Power Substation

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: FN8-40.5
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: SF6
• Installation: Fixed
• Structure: ACB
• Poles Number: 2
• Type: Circuit Breaker
• Function: Circuit-Breaker Failure Protection
• Certification: ISO 9001:2015
• Product Name: Indoor High Voltage AC Sf6 Circuit Breaker
• Rated Voltage: 40.5kv
• Frequency: 50Hz
• Rated Current: 1250A/2500A/3150A
• Transport Package: Wooden Box
• Specification: Customized
• Trademark: Jinhuilong
• Origin: China
• Production Capacity: 50pieces/Week
• Package Size: 147.00cm * 92.00cm * 160.00cm
• Package Gross Weight: 180.000kg

Product Description

Product Description

FN8-40.5KV

  FN8-40.5 is a 40.5kV indoor AC SF6 circuit breaker by Guangdong JinhuiLong Electric co.ltd. It uses SF6 as insulation and arc-quenching medium with advanced thermal expansion and pressure-assisted gas-blowing technology.
  Maintenance-free, compact, and easy to install, it supports fixed and draw-out types for standard 40.5kV switchgears. It features a spring operating mechanism for manual and electric operation, plus anti-misoperation interlocks, SF6 low-pressure alarm and lockout, and pressure relief safety device.
With excellent capacitive current switching and no switching overvoltage, it is widely used in power grids, substations, power plants, new energy and industrial systems. Complies with GB and IEC standards.

Specification

No.	Item		Unit	Technical Parameters
1	Rated Voltage		kV	40.5
2	Rated Frequency		Hz	50/60
3	1min Power Frequency Withstand Voltage	Alternating, relatively low	kV	95
		Broken		118
	Lightning Impulse Withstand Voltage (Peak)	Alternating, relatively low		185
		Broken		215
4	Rated Current		A	1250, 1600, 2000, 2500, 3150
5	Rated Short-Time Withstand Current (RMS)		kA	25	31.5
6	Rated Peak Withstand Current		kA	63	80
7	Rated Short-Circuit Breaking Current (RMS)		kA	25	31.5
8	Rated Short-Circuit Making Current (Peak)		kA	63	80
9	Rated Duration Of Short-Circuits		s	4
10	Rated Sequence Of Operation		-	O—0.3s—CO—180s—CO
11	Rated Single Phase-to-Ground Fault Breaking Current		kA	21.7	27.4
12	Rated Cable Charging Current Switching Test		A	50
13	Rated Breaking Current of Single/Back-to-Back Capacitor Bank		A	≥800 / 800
14	Mechanical Endurance		Times	10000
15	Short-Circuit Current Breaking Times		Times	20
16	1min Power Frequency Withstand Voltage of Secondary Circuit		V	2000
17	Rated Operating Voltage	Closing line circle	V	DC110/220, AC220
		Opening line circle		DC110/220, AC220
18	Rated Voltage of Energy Storage Motor		V	DC110/220, AC220
19	Rated Power of Energy Storage Motor		W	250
20	Energy Storage Time (At Rated Voltage)		s	≤10
21	Rated SF6 Gas Pressure (Gauge Pressure at 20℃)		MPa	0.35+0.02/0
22	Alarm Pressure		MPa	0.30±0.01
23	Minimum Functional Pressure (Lockout Pressure)		MPa	0.28±0.01
24	Annual Leakage Rate		%	≤0.5
25	Gas Moisture Content		μL/L	≤150
26	Moving Contact Stroke		mm	≥78
27	Contact Opening Distance		mm	≥50
28	Opening Time		ms	33~130
29	Closing Time		ms	65~95
30	Three-Phase Asynchronism of Closing & Opening		ms	≤2
31	Average Opening Speed (Within 10ms after Half Stroke)		m/s	2.2~2.8
32	Average Closing Speed (Within 10ms after Half Stroke)		m/s	≥1.5
33	Main Circuit Resistance		μΩ	≤32 (Trolley Type)	≤25 (Fixed Type)

Notes
* The rated current and rated short-circuit breaking current of the combined unit shall be determined according to the equipped fuse.The selection of technical parameters in ( ) shall be specially noted when placing an order.

Company Profile

About Us

  The company operates world-leading digital intelligent manufacturing  production lines and comprehensive production/testing equipment. Key R&D and production lines include: 3-35kV high-voltage switchgear series, 3-35kV high/low-voltage pre-assembled substation series, 3-35kV gas-insulated switchgear series, and 0.66kV and below low-voltage switchgear series. Component series include FN8-40.5 sulfur hexafluoride circuit breakers, VN8 indoor vacuum circuit breakers, and smart terminal products. With robust comprehensive production capacity, guaranteed product quality and safety, rapid delivery, and extensive coverage, our products are widely applied in power grids, nuclear power, thermal power, and new energy sectors.

Packaging & Shipping

Certifications

FAQ

Q1: What main electrical products do you supply?

A1: We mainly supply LV/MV (0.4kV-40.5kV)  distribution cabinets, circuit breakers, box substations, pole mounted switches and related electrical supporting parts.

 

Q2: Do you accept OEM/ODM?

A2: Yes, we do. Our professional engineering team can customize products according to your drawings or specific requirements.

 

Q3: What's your MOQ?

A3: Our MOQ is one set. We welcome small trial orders for your initial cooperation.

 

Q4: What's the delivery time?

A4: It depends on your order quantity and specifications, and it normally takes about 15-20 working days.

 

Q5: How do you ensure product quality?

A5: We have a strict QC team and complete testing process. Every product will be fully tested before shipment, and we can provide test photos/videos if you need.

 

Q6: What payment terms do you accept?

A6: We accept T/T and other terms can be discussed according to the actual order.

 

Q7: What after-sales service do you offer?

A7: We provide online technical support at any time. If you have product use problems, we will reply and solve them for you in a timely manner.