12kv 40.5kv IEC62271 Ring Main Unit Rmu for Prefabricated Power Cabin

• Customization: Available
• Certification: ISO9001, IEC62271
• Shell Material: Steel Plate
• Model NO.: ZCSF-12/ZCSF-40.5
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Cabinet
• Current: AC
• Rated Voltage: 12/40.5kv
• Loss of Service Continuity: Lsc2
• Height: 2200/2400mm
• Width: 450/500mm
• Depth: 750/1000mm
• Transport Package: Aluminum Foil + Wooden Pallet
• Trademark: Customized
• Origin: China

Product Description

12kV 40.5kV Sf6 Ring Main Unit Rmu Switchgear For Power Transmission

Serial number	Item		Unit	Data
1	Rated voltage		kV	12	40.5
2	Rated frequency		Hz	50/60
3	Rated current		A	630	630/1250
4	Rated power freguency withstand voltage(1min)	Phases and to earth	kv	42	95
		Isolating distances		48	118
	Rated lightning impluse withstand voltage	Phases and to earth		75	185
		Isolating distances		85	215
	Power frequency withstand voltage (Control and auxiliary circuit)			2
5	Rated short-time withstand current		kA	20/25	31.5
6	Rated peak withstand current		kA	50/63	80
7	Duration of rated short-circuit current		s	4	4
8	Rated short-circuit breaking current		kA	20/25	31.5
9	Rated short-circuit making current		kA	50/63	80
10	Arcing duration		s	1	1
11	Rated operating sequence			0-0.3s-CO-3min-CO
12	Insulating gas			SF6
13	Annual leakage rate		%	≤ 0.01
14	Standard degree of protection	Sealed gas box		IP67
		Switchgear enclosure		IP4X
15	Rated inflation pressure		MPa	0.03
	Minimum functional level pressure			0.01
16	Rated supply voltage of auxiliary circuit		V	DC 24, 48, 110, 220, AC220
17	Mechanical life	Circuit breaker	Operation	10000	11000
		Isolation switch		5000	3000
		Earthing switch		5000	3000
18	Electrical endurance of circuit breaker		Operation	30(E2)
19	Loss of service continuity			LSC2

 

Standards & Specifications

• IEC 62271-1: 2021 High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear

• IEC 62271-100: 2021 High-voltage switchgear and controlgear - Part 100: Alternating-current circuit breakers

• IEC 62271-200: 2021 High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and  controlgear for rated voltages above 1kV and up to and including 52kV

• IEC 60529: 1989+AMD1:1999+AMD2:2013 CSV Consolidated version Degrees of protection provided by enclosures (IP Code)