Description
The SF6 load switch MFLN36-12 is a three-phase combined load switch, which enables switching on and off under load (without damage) sections of the three-phase alternating current circuit, with earthed or isolated neutral, in emergency conditions.
MFLN36-12 is characterized by reliable blocking, a high level of insulation strength and a large creepage distance.
MFLN36-12 passes full type tests, and its performance is in line with GB3804 «3-63Kv AC high- voltage load break switch», GB16926 «high- voltage load break switch — fuse combination unit», IEC60265 and IEC60420 standard requirements.
The product has «joint — division- ground» three-position arc chamber, with reliable interlocking, high dielectric strength of fracture, design of large creepage path, and its leading-out terminal is protected by a voltage- sharing protection cover. For the cable head installable load break switch, its outgoing end is equipped with touch-type cable connector, the outgoing line is installed with high-voltage cable, equipped in cable branch (distribution) box.
The switch has special dynamic seal and fixed seal design, which is reliable, and it is equipped with a voltmeter in a clear position for monitoring in operation to ensure safe operation, which is a new generation of high voltage switchgear for urban power grid.
Rated current, A — 125, 400, 630
Rated voltage, kV — 10
The maximum operating voltage, kV — 12.7
Rated frequency, Hz — 50
Rated short-time withstand current, kA / s — 12.5 / 4 20/2
Rated peak withstand current, kA — 31.5 / 50
Impulse voltage (peak) / ground, kV — 75/85
