Application Area

Based on its superior patented technologies such as solid insulation, solid sealed pole, fully-insulated modular busbar, etc, solid insulated ring main unit fully meets the rand radiation distribution network of various wiring programs. At the same time, solid insulation switch unit has been in the alternative demarcation switch, box-type substation high-side switch, KYN28 in the cabinet, XGN fixed cabinet and other applications have high quality performance, especially for those area which pursues SF6 free. The intelligent terminal equipment connected to the solid insulated switch unit can monitor and control the real-time situation remotely and ensure the intelligentity, reliability of the distribution network system.

Product Features

• Comparing with the gas insulated switchgear, this electrical distribution equipment is SF6 free, no SF6 is contained, avoiding pressure tank designing.
• All live parts are sealed or embedded in the epoxy resin and silicon rubber, fully insulated and wholly enclosed structure, safety protection level: IP67.
• All operating mechanism sealed inside a box, truly maintenance-free.
• Enhanced phase separation design, independent phase insulation to avoid the fault between phases.
• Standard modular design to facilitate unit extension, modification and replacement.
• Switch working position of each phase could be observed independently.
• Safe, smart, environment-friendly, flexible assembly enabled, good performance to apply in special environments.
• Multiple mechanical interlock to achieve 'five-protection' function.
• Complete indoor & outdoor switchgear application solution

Multi-Environment Application

Coastal area: fully sealed structure of the mechanism, professional high salt spray testing equipment to ensure long-term application in coastal areas.

Low temperature area: The solid insulated switchgear doesn't need SF6, so the potential problem caused by insulation gas being liquefied under low temperature can b

Plateau area: Due to the absence of SF6, the problems caused by the big pressure difference between the inside and outside of the gas tank in high altitude areas can

Explosion forbidden places: The switch adopts vacuum interrupter sealed with epoxy resin bushing which can prevent the gas exposure and explosion.

Basement with workers: The density of SF6 is 5 times higher than air on the same condition. So if the SF6 in a traditional RMU leaks out, it will accumulate in low area workers there could be harmed or suffocated.

Frequent switching operation situation: Switch operations for solid dielectric designed RMU reaches 20,000 times.

Areas with high requirements for environmental protection: Our solid insulated switchgear doesn’t contain SF6, which is a kind of greenhouse gas.

Windy and sandy area: The IP rating of the live parts reaches IP67. The control circuit compartment is specially treated, so our product can work in windy and sandy ar time.

High temperature environment: Suitable for special areas of high temperature environment, the maximum temperature of normal operation is up to 70 ℃. The high te environmental test has been performed.

Structure Diagram

• Cable Compartment
• Viewing Window
• Circuit Breaker Open knob
• Circuit Breaker Close knob
• Switch Status (Close and Open) Indicator
• Energization Indicator
• Changing Indicator for Circuit breaker
• Charging Operation Hole for Circuit breaker
• Disconnector Operation Hole
• Short-circuit and Earth Fault Indicator
• Secondary Compartment
• Cable Compartment Viewing Window

Parameters

Parameter Title	Unit	Load Switch	Load Switch +Fuse	Vacuum CircuitBreaker	Disconnector	Earthing Switch
Rated Voltage	kV	12	12	12	12	12
Arc Quenching	-	Vacuum	Vacuum	Vacuum	-	-
Rated Current	A	630	125	630/1250	630/1250	630/1250
Rated Frequency	Hz	50	50	50	50	50
Main Circuit Resistance	μΩ	≤120	300 Note1	≤120	-	-
Power Frequency Withstand Voltage Between Phases, Phase to earth/open contacts	kV	42/48	42/48	42/48	42/48	42/48
Lightning Impulse With stand Voltage Between Phases,Phase to earth/open contacts	kV	75/85	75/85	75/85	75/85	75/85
Rated Short-circuit Breaking Current	kA		31.5 Note2	20/25/31.5
Rated Short-circuit Breaking Times	times			30
Rated Short-circuit Making Current	kA	50		50/63
Rated Short-circuit Making Times	times	5		5
Rated Short-time Withstand Current	kA/4s	20		20/25	20/25	20/25
Rated Peak Withstand Current	kA	50		50/63	50/63	50/63 Out
Out-of-phase Earth Fault BreakingCurrent	kA			17.3/21.7
Rated Cable Charging BreakingCurrent	A	10		10
Rated Take-over Current	A
Internal Arc Test(AFLR)	KA/s	20KA/0.5s (Include busbar room, switch room, cable tank)
Partial Discharge	pC	≤5	≤5	≤5
IP Rating		IP67	IP67	IP67
Mechanical Endurance	times	10000	10000	10000	3000	300