24kv Lateral Type Indoor Vcb M. V Vacuum Circuit Breaker

12/24kV-1250A-31.5kA indoor drawable type embeded pole vacuum circuit breaker(vcb) Description VB4 series medium voltage vacuum circuit-breakers with lateral operating mechanism feature the separate pole construction technique. VB4 vacuum circuit breakers have been designed for indoor use and air insulated switchboards. Their switching capacity is sufficient to handle any conditions arising from switching of equipment and system components under normal operating and fault conditions, particularly short-circuits, within the parameters of their technical data. The vacuum circuit-breakers of type VB4, designed in column form, can be supplied both as individual units for fixed installation and mounted on chassis. Vacuum circuit-breakers are characterized by their simple and robust construction. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents.   Advantages Vacuum circuit-breakers have particular advantages for use in networks where there is a high switching frequency in the working current range and/ or where a certain number of short- circuit breaking operations are expected. VB4 vacuum circuit-breakers are suitable for auto reclosing and have exceptionally high operating reliability and long life. The circuit- breakers are notable for their compact design, small dimensions together with high capacity. The operating mechanisms have a low maintenance requirement and the interrupters are maintenance- free throughout their service lives. They are well suited to all load breaking operations which occur in practice, and in particular: Short-circuit currents; Overhead lines under load and, no-load conditions; Cables under load and no-load conditions; Transformers under load and no-load conditions; Generators under load and no-load conditions; Ripple control system; Capacitor banks(also parallel switching) and Motors with starting currents above 600A;   Application Cable control and protection Overhead control and protection Transformers and distribution substations Motor and transformer control and protection Generator control and protection Capacitor bank control and protection Main characteristics Rated voltage1)kV1224• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •• / •••••Rated frequencyHz50 -6050 - 60Rated normal current 630...40002)630.25Rated short-circuit breaking current (symm.)kA16.31.540506316.31.5Rated short-circuit making currentkA40.81001254)15840.8Rated duration of short-circuit4)s33333Fixed- / withdrawable Version • / •• / •• / •• / -• / •Max. overall dimensions(fixed Version)mmpHabc150-275205-310450-700424 461-5996)210-275310570-7004245996)210-275310600-7504596088)275310750459677210-275310570-700424631-661Weightkg73-10594-180147-260265100-110Embedded Pole ••• •Assembled Pole    • 1) Test voltage according IEC62271-100 2) 4000 A with forced cooling 3) 3150 A with forced cooling in APG technology 4) Higher values on request 5) 360 mm for fixed, 280 mm for withdrawable Version 6) Circuit-breaker with heat sink 616 mm 7) Withdrawable Version 8) Circuit-breaker with heat sink 634 mm   /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1