RSF 40.5kV SF6 Insulated RMU-PowerMatrix Tech, Inc.

Core component features

Circuit breaker mechanism Adopts precise transmission structure with reclosing function. It’s of accurate output angle, high output power and efficient transmission.

Isolation mechanism Adopts three-position mechanism with single spring and double operating shaft. The closing and opening positions are accurate with no overshoot. It can load the electric scheme.

Circuit breaker Adopts vacuum arc extinguishing technology. It’s of high insulation performance and great making or breaking ability. It can avoid insulation pollution when making and breaking.

Disconnector To avoid mis-operation, the disconnector adopts three-position design, with 63kA peak short circuit making current of the earthing switch.

Load Break Switch The arc extinguishing principle of the load break switch adopts advanced self-energized arc-absorbing coil to open and close, and it is equipped with transparent arc-isolating cover to ensure reliable opening and closing.

Core component features

Circuit breaker mechanism Adopts precise transmission structure with reclosing function. It’s of accurate output angle, high output power and efficient transmission.

Isolation mechanism Adopts three-position mechanism with single spring and double operating shaft. The closing and opening positions are accurate with no overshoot. It can load the electric scheme.

Circuit breaker Adopts vacuum arc extinguishing technology. It’s of high insulation performance and great making or breaking ability. It can avoid insulation pollution when making and breaking.

Disconnector To avoid mis-operation, the disconnector adopts three-position design, with 63kA peak short circuit making current of the earthing switch.

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Component details

Operation mechanism The whole transmission system adopts rolling bearing schemes, with flexible rotation and high transmission efficiency. The surface treatment adopts zinc-nickel alloy.

Circuit breaker The integrated injection molding insulation cylinder is of large climbing distance and high insulation strength. Its aluminum-alloy shielding structure is of uniform electric field.

Disconnector The front - and rear - metal precision stamping plates are of high strength and light weight. The integrated main shaft ensures the switch is of small bounce and high synchronism.

The isolated moving and static contacts The isolated moving and static contacts adopt cold forging technique. They are of high hardness and good current carry capacity. The positions of contacts adopt shielding structure with good insulation performance.

Earthing static contact T-type static contacts adopt cold heading technique, with high hardness, good current carry capacity, and excellent performance in short time withstand and grounding closing.

Closing and opening structure Vacuum interrupters and operating mechanisms adopt cam-driven closing and opening structures, which helps to realize small closing bounce, stable over-travel, and high interchangeability.

Component details

Operation mechanism The whole transmission system adopts rolling bearing schemes, with flexible rotation and high transmission efficiency. The surface treatment adopts zinc-nickel alloy.

Circuit breaker The integrated injection molding insulation cylinder is of large climbing distance and high insulation strength. Its aluminum-alloy shielding structure is of uniform electric field.

Disconnector The front - and rear - metal precision stamping plates are of high strength and light weight. The integrated main shaft ensures the switch is of small bounce and high synchronism.

Earthing static contact T-type static contacts adopt cold heading technique, with high hardness, good current carry capacity, and excellent performance in short time withstand and grounding closing.

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Live interlocking device of earthing switch

If high-voltage incoming wires are live or the operating handle is pulled out, it can immediately realize automatic locking.
Over-temperature protection function is built in the device, so it keeps the device safe and reliable. In case of emergency, it can realize mechanical unlocking.

Ratings & Specifications Operating Environment Product Solutions External Dimensions

Parameter	V-module	C-module	Bus Grounding Unit
Rated voltage	40.5 kV	40.5 kV	40.5 kV
Power frequency withstand voltage	95/118 kV	95/118 kV	95/118 kV
Impulse withstand voltage	190/220 kV	190/220 kV	190/220 kV
Rated current	630 A	630 A	630 A
Rated short circuit breaking current	20/25 kA		20/25 kA
Rated short circuit making current	50/63 kA		50/63 kA
Rated withstand current (peak)		50/63 kA
Rated short time withstand current	(20/4) or (25/4) kA/s	(20/4) or (25/4) kA/s	(20/4) or (25/4) kA/s
Mechanical life	Circuit breaker 10000 times / Isolating 5000 times / Earthing 5000 times	Load 5000 times / Earthing 5000 times	Circuit breaker 10000 times / Isolating 5000 times / Earthing 5000 times

RSF-40.5 series insulated switchgear shall comply with GB/T11022-2020，GB3906-2020，GB1985-2023，GB16926-2009，GB3804-2017，GB1984-2024，IEC62271-1，IEC 60265-1，IEC62271-102，IEC62271-200，IEC62271-100，IEC62271-105，IEC 60255 and other standards.

Item Parameter

Ambient temperatureMaximum temperature +75℃；
Maximum temperature (24h average) +35℃；
Minimum temperature -45℃；

HumidityMaximum average relative humidity (24 hours ≤ 95%; monthly ≤ 90%)

IACAFLR 25kA 1s

Service continuity categoryLSC 2A

Cable bushing standardGB/T12706.4、IEC60502、NF-EN-50181

Altitude≤ 2000m (under standard inflation pressure)

Gas pressureLower than 20 ℃, 1.4bar (absolute pressure)

Annual leakage rate0.25‰/year

Immersion test0.3 bar pressure underwater 24h

Protection degreeTank IP67
Enclosure IP54

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陈育鑫 Ezzat 臧文明刘福财 James Zhu 闫涛谈宏波陈跃欣张正辰王晓杰雒园王博博

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