Standard: IEC60840, GB/T11017 and other relative standards                                                             Usage Environment: -50°C- 70°C ; position both suitable for indoor and outdoor  ; altitude: less than 1200m Usage Scale: on the iron tower, connect with aerial line directly; in the transformer substation, connect to transformer, electric switch and other equipment                                                                               Product Characteristics: YJZWC  high mechanical strength; good insulating performance; strong anti-pollution ability;    YJZWCF  light and easy installation; strong anti-pollution performance; good anti-explosion performance                                                                                                                                         Allowance Test: 650KV without flashover, without puncture