Indoor AC Rmu Sf6 Ring Main Unit for High Voltage Power Transmission

• Certification: ISO9001
• Shell Material: Aluminum Alloy
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Withdrawable
• Current: AC
• Model NO.: XGN15-12/24
• Application: Electric Power Transmission
• Rated Frequency: 50Hz/60Hz
• Transport Package: Standard Export Packaging
• Specification: circuit breaker unit
• Trademark: Liyond
• Origin: China
• HS Code: 8537209000
• Production Capacity: 10000 Set/Month

Product Description

XGN15-12/24 ring main unit switchgear is SF6 gas insulated metal box-type closed switchgear, this device can be composed of
load switch unit, load switch fuse combiner unit, vacuum circuit breaker unit, bus line unit module. Using a series of advanced
technology and materials, with excellent electrical and mechanical properties, affected by the environment and climate is very
little, small size, easy to install, easy to operate, no need maintenance, and has a flexible combination. Clear and intuitive design
to ensure that the operation is simple, direct, feeder wiring capacity, suitable for a variety of wiring systems.

Switchgear Structure

Unit definition

Unit code	Significance
C	Standard single bushing load switch unit
F	Load switch-fuse combination unit
V	Circuit breaker unit
D	Cable inline unit (without switch)
+	Busbar side bushing
-	Busbar top bushing
SL	Bus coupling unit
M	Metering unit
PT	PT unit
1K2(4)	Load switch unit with double bushing outlet

Size reference

Model	Width	Deep	High	a	b	C	Weight(kg)
C+	371	751	1336	1146	710	510	136
1k2(4)	426	820	480	420	420	510	182
2C+	696	751	1336	1146	710	510	206
3C	1021	751	1336	1146	710	510	300
4C	1346	751	1336	1146	710	510	390
5C	1671	751	1336	1146	710	510	486
F	371	751	1336	1146	710	510	164
V	371	751	1336	1146	710	460	230

Note: The above data is for reference only (please ask the technical department for the parameters of 20kV switchgear)

Technical parameters

Item		Unit	Load switch unit	Combined electrical unit	Circuit breaker unit
Rated voltage		KV	12/24	12/24	12/24
Rated frequency		Hz	50	50	50
Rated current		A	630	depends on fuse current rating	630
Rated insulation level	Power frequency withstand voltage (interphase and relative ground)	KV	42/65	42/65	42/65
	Power frequency withstand voltage (between fractures)		48/79	48/79	48/79
	Power frequency withstand voltage(control and auiliary circuit)		2/2	2/2	2/2
	Lightning impulse withstand voltage(interphase and relative ground)		75/125	75/125	75/125
	Lightning impulse withstand voltage (between fractures)		85/145	85/145	85/145
Zero gauge pressure test		-	pass	pass	pass
Rated short-time withstand current		KA	20/4s 20/3s	-	20/4s 20/4s
Rated peak withstand current		KA	63	-	63
Rated short- circuit making current		KA	50/63	limited to high voltge fuese	50
Rated short- circuit breaking current		KA	-	limited to high voltge fuese	20/20
Rated transfer current		A	-	1750/1400	-
Rated active load breaking current		A	630	-	-
Rated closed-loop breaking current		A	630	-	630
Mechanical life	Load switch/ circuit breaker	time	5000	5000	10000
	Isolation/earth switch		5000	5000	5000
Loop resistance		μΩ	≤120	-	≤120
Inflation pressure	Rated inflation pressure  (absolute pressure)	bar	1.3	1.3	1.3
	Minimum inflation pressure  (absolute pressure)		1.2	1.2	1.2
Annual gas leakage rate		%	≤0.02	≤0.02	≤0.02