single-phase electric railway indoor vacuum circuit breaker ZN-27.5/2000-31.5 type

SUMMARY

ZN□-27.5/2000-31.5型单相户内电气化铁道真空断路器(以下简称断路器)。该断路器是单相交流50Hz的户内配电装置，适用于电气化铁道的牵引变电所、分区亭和开闭所，作为控制开关和故障保护开关。
ZN□-27.5/2000-31.5 type single-phase electric railway indoor vacuum circuit breaker (hereinafter referred to as the circuit breaker).
The circuit breaker is the indoor power distribution unit, single-phase 50Hz, suitable for electrified railway traction substation, partition Pavilion and open and close, as a control switch and fault protection switch.

USING ENVIRONMENTAL CONDITIONS
A. ambient temperature: -25 to +40.
B. air relative humidity: daily average of not more than 95%, the average of not more than 90%. Water vapor day average is not more than 2.2 x 10-3Mpa, the monthly average of not more than 1.8 x 10-3Mpa.
C. altitude: the ordinary type does not exceed 1000m, the plateau type does not exceed 3000m.
D. atmospheric conditions: there should be no serious impact on the insulation of the product contamination and corrosive, explosive medium.
E. installation site: there should be no serious impact on the vibration and bumps.

MAIN TECHNICAL PARAMETERS