The main technical parameters of Plastic Meter Box
1.Main busbar rated current:225A-10A
2.Main busbar rated short time withstand current:30KWA
3.Insulation resistance:No less than 20Ω
4.Nominal insulation voltage:800V
5.Electrical strength:When applied voltage of 50hz2000v for one miniter,there should not be a phenomenon of flash-over and breakdown of lightning.
6.Acid-proof alkaline:dribble 1ml acid-base solution of concentration 3 percent onto the surface of the box body,clean away an hour later,there is no crack and no delamination.
7.Anti press properties:When put 100kg heavy on the any position of the box,after 3 miniters,there is no cracking and damage
8.Voltage and frequency:220V/380V,50Hz
9.Levels of protection:43
10.Flame retardancy:FV-0degree,flame temperature is no less than 650°C.
Transparent Meter Cabinet Electric Plastic Meter Box
item | unit | condition | SMC standard value | DMC standard value |
density | kg/m3 | >=1.80 | >=1.80 | |
hydrophilism | % | <=1.20 | <=0.20 | |
Molding shrinkage | % | <=0.15 | <=-0.03 | |
distortion temperature | °C | 240 | 240 | |
bending strength | MPA | >=145 | >=155 | |
impact strength | KJ/m2 | free beam, Unnotched | 70 | 70 |
insulation resistance | Ω | soaking 24h | >=1.0*1012 | >=1.0*1012 |
electrical strength | KV/mm | 90 °C oil | >=20 | |
Arc Resistance | S | batch-type | >=180 | >=180 |
dielectric dissipation factor | 1 MHz | <=0.02 | <=0.01 | |
Leakage resistance index | V | PTI | >=600 | >=600 |
combustibility | level | FV | Not inferior to HB | Not inferior to HB |
levels of protection | >=IP40 | >=IP40 |