欧洲色网站,精品久久久久久中文字幕无码小说,中文字幕中文一、二区,妻日韩精品一区二区

Welcome to the website of Taifang Machinery Co., Ltd!
Suzhou Taifang wire cable machinery Co.,Ltd.
7X24H Service Hotline:

+86-138-1293-0229

Popular keywords:

Contact Us

Suzhou Taifang wire cable machinery Co.,Ltd.

Contacts:Mr.Zhong
Email:121740864@qq.com
Phone:+86-138-1293-0229
ADDRESS:579 Qianjin East Road, Kunshan Development Zone, Jiangsu Province

Location:Home>>News>>Industry News

Relevant standards and specifications for photovoltaic cable selection

Release time:2024-08-02Popularity:419

Relevant standards and specifications for photovoltaic cable selection

1. L/T5044-2004 Electric Power Industry Standard of the China

When selecting multi-core cables, the allowable current carrying capacity can be calculated based on the value of single core cables with the same cross-section.

Copper core cables should be selected for the control and signal wires led out from the DC cabinet. The voltage drop should not exceed 5% of the nominal voltage of the DC system. The selection and laying of DC cables should comply with the relevant regulations in GB50217.

2. B50217 Code for Design of Electric Power Engineering Cables

The DC power supply circuit should use two core cables, and single core cables can be used when needed. PVC insulated cables should not be used in places with high temperatures (above 100 ℃) or low temperatures (below-20 ℃). When directly buried cables are laid, steel tape armored cables should be used when the cables are subjected to significant pressure or there is a risk of mechanical damage. The temperature of the cable core under the maximum working current shall not exceed the allowable value determined based on the service life of the cable. Determine the ambient temperature for the continuous allowable current carrying capacity of the cable. If the cable is laid in the air or cable trench, the average value of the highest temperature on the hottest month should be taken.

3. The selection of cable path should comply with the following regulations

(1) Avoid cables from mechanical external forces, overheating, corrosion, and other hazards.

(2) Make the cable shorter while meeting safety requirements.

(3) Easy to lay and maintain.

(4) Avoid areas that will be excavated for construction

(5) The cable should meet the allowable bending radius requirement when changing its components in any laying method and all path conditions.

Q Q
Hotline

Service Hotline

+86-138-1293-0229

WeChat
Suzhou Taifang wire cable machinery Co.,Ltd.
TOP
91麻豆国产精品自产在线观看| av xing yu| 91高清免费国产自产拍不卡| 中国精品一区二区| 欧美综合精品国产| 国产久re热精品播放色噜噜久久 | 午夜福利影院麻豆| 国产爆乳不伦| 欧美亚州二区| 久久久久一区| 全球视频久久久| 久久久久亚洲AV成人片仓井空| 小sao一区二区| 国产AV无码久久久久久亚洲精品 | 国产精品成人无码免费| 超碰欧美肥臀| 国产日韩欧美黄片| 国产高清美女天干天天| 中国一级毛片免费看| 国产精品无码久久AV不卡能看的| 亚洲无码在线观看视频免费| 六月婷婷小说| 国产av最新导航| 日本三级二区| 偷偷ri| 五月丁香欧美性爰| 狠狠狠欧美| 亚洲国产AV无码精品色午夜亚瑟| 图片专区 国产日韩| 日本爱爱视频网站| 欧美亚洲日本日韩在线| 五月丁香成人AV| 无码一区二区久久免费| 久久精品中文字幕乱码| 亚洲免费久久91无码国产| 人妻无码99精品| 丁香亚洲五月激情社区| 午夜免費在线观看午夜在線| 激情视频网站小说| 精品在线视频中文字幕| 无码人妻少妇伦在线电影|