Is there a relationship between leakage current and cable?
In carrying on the XLPE insulating power cable performance testing, prior to the end of the cable, cable the higher voltage class, this kind of treatment, the more strict, described.properties of medium voltage cable, to the end of the cable outer semiconductive layer is needed for a certain len...
Which foam fire extinguisher can not put out the fire?1, can't save electrical fires;2, avoid water items not fighting fires;3, valuables, an instrument of fire;Because a bubble contains ninety-seven percent water, so you can't save electrical fires (water conductivity) and avoid water material fire (and avoid water items even touch burns),...
Save electric fire should first do what? When charged, are fire extinguisher saves available?First of all, the power of the electrical equipment shall be disconnected. When charged, can use dry powder fire extinguishers, or carbon dioxide fire extinguishers.Dry powder fire extinguisher to extinguish fire commonly also can be put out of oil, gas...
Three forms of cable in case of partial discharge1, near the electrode tip of partial discharge in the air gap;2, between the electrode and dielectric layer in the air gap discharge,3, medium within the air gap or bubble discharge.ZMS cable company will continue to bring you more science and trivia about the cable....
Self-checking items of the drawing processMonofilament diameter, length, the degree of annealing, the exterior (apparent quality is bright and clean, no triangle mouth, cracks, inclusions and severe oxidation discoloration, row line to tidy, not superconductor plate, the plate length conforms to process and plan).All cables from ZMS cable company...
The matters needing attention when using an oil terminal1) outside the power cable shielding layer cutting length: 10 kV cable is about 90 ~ 100 mm; 35 kV cable is about 410 ~ 430 mm;2) outside the cable shielding layer of oil length: 10 kV cable is about 30 ~ 60 mm.3) to shield the strip cut surface must be neat cutting, can not have burrs, insulation surface must b...
Introduction to the refractory testerDepending on the wire and cable wire and cable fire testing machine is divided into a variety of refractory testing machine testing machine, including the common wire and cable, medium voltage refractory refractory testing machine testing machine and bs refractory testing machine and so on wire and cable testing...
The power cable will know fire prevention technology1, create a good environment to avoid running power cable insulation accelerated aging and damage
2, strengthen the preventive test of the cable
3, strong on the quality of the cable head production management and operation monitoring.
4, prevent other equipment on fire ignition cable
5, seal...
The cable withstand voltage test unqualified reason1) local insulation itself is flawed;
2) insulation thickness is not enough;
3) conductive wire core surface of burrs, sharp corners and sharp edges, bumps, welding points not firm or wire fracture cause electric field concentration;
4) metal sheath (or metal shielding) fracture or convex surf...
Types of quality control at the inspection site1. The fixed site inspection
Fixed place inspection is formed in the production process work sites, sites, site set up fixed testing stations (points) for inspection activities. Testing stations can be set up in the work team, section of fleet, and site, the equipment is concentrated, to facilitate inspec...
