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SINTER VACUUM BREAKERS

MV switch disconnectors

We design and manufacture SINTER appliances, which is a combined system of breaking and sectioning functions. It is housed in a SF6-insulated enclosure.

The breaking function is ensured by vacuum bottles. The reduced energy required to extinguish the arc allows for reaching a long-lasting electrical life (10,000 rated breaking current operations).

The whole set of active components (switch and line switch disconnector) is contained in a sturdy stainless steel structure containing SF6 gas (highly dielectric). 6 insulating bushings and the control device are fastened to this sealed structure. This compact structure ensures sturdiness and reliability over time. The Sinter is also equipped with an air-insulated earth switch.

The SF6 insulation helps reduce the size of the MV panels with switch having a width of 500 mm, our NVB/R, NVBR/CA cubicles.
The Sinter is ENEL-approved in compliance with the DY800 standard.
Electrical characteristics Sinter vacuum breaker
Rated insulation voltage (Ui) Ui 12 ÷ 24 kV
Rated frequency fr 50 ÷ 60 Hz
Rated atmospheric impulse withstand voltage Up 75 ÷ 125 kV
Rated thermal current Ir up to 630A
Rated short circuit duration 1s Ik up to 21kA

M.V. Equipment

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SBS and SB switch disconnectors
M.V. Equipment
SBS6 and SB6 switch disconnectors
M.V. Equipment
SF6- and PF6-insulated pole-mounted on-load switch disconnector with internal arc-proof