搜索

中文版

English

NEWS
Your location:
Homepage
/
News

05/23/2020

Our company is a private technology-based power fittings

Hebei North Electric Fittings Co., Ltd. is located in Liangzhao Industrial Zone, Renqiu City, Hebei Province. Our company is a private technology-based power fittings and circuit equipment manufacturer integrating scientific research, development and production,
View Article →
Our company is a private technology-based power fittings
View Article →

05/23/2020

We provides users with thousands of power products

It covers a total area of 60000m2, with a construction area of 40000m2 and a registered capital of 110 million yuan. It is mainly engaged in the production and sales of 750kV and below transmission line equipment and safety tools, with an annual production capacity of 6800 tons and an annual total output value of 350 million yuan.
View Article →
We provides users with thousands of power products
View Article →

05/23/2020

It is mainly engaged in the production and sales of 750kV and below transmission line equipment and safety tools

It is mainly engaged in the production and sales of 750kV and below transmission line equipment and safety tools, with an annual production capacity of 6800 tons and an annual total output value of 350 million yuan. It provides users with thousands of power products, qualified suppliers of State Grid Corporation of China,
View Article →
It is mainly engaged in the production and sales of 750kV and below transmission line equipment and safety tools
View Article →

05/23/2020

The company will exchange and cooperate with customers with advanced concept, innovative technology, scientific development concept and good reputation.

Our company has a perfect quality assurance system and quality assurance ability, with a group of senior professional and technical personnel, including 4 research and design personnel, 2 senior technicians, 5 intermediate technicians, high, low casting and gravity casting, Profile extruder, friction welding machine and machining equipment more than 400 sets,
View Article →
The company will exchange and cooperate with customers with advanced concept, innovative technology, scientific development concept and good reputation.
View Article →

03/19/2019

输电线路覆冰危害的特点

线路覆冰倒杆(塔)断线的特点：一是由于覆冰时杆(塔)两侧的张力不平衡造成的。在一些地形起伏较大的地区，两相邻的杆(塔)在高度和距离上存在很大的差距，在还未覆冰时两侧就形成了较大的不平衡张力，当线路上出现大密度的覆冰时，杆(塔)两侧的不平衡张力加剧，当张力不断加大，直至到达杆(塔)、导线所能承受的极限时，就出现了导线断落或杆(塔)倒塌的现象。因此，在灾后恢复和未来的设计改造中，应尽量避免大高度差、大距离和大转角。二是线路上有大密度的雨凇覆冰时，因为雨凇覆冰是“湿”度增长过程，其粘附能力强，不易掉落。在风的激励下，导线会产生大振幅、低频率的自激振动。当舞动的时间过长时，会使导线、绝缘子、金具、杆(塔)受不平衡冲击疲劳损伤。　　线路覆冰倒杆(塔)断线的特点：一是由于覆冰时杆(塔)两侧的张力不平衡造成的。在一些地形起伏较大的地区，两相邻的杆(塔)在高度和距离上存在很大的差距，在还未覆冰时两侧就形成了较大的不平衡张力，当线路上出现大密度的覆冰时，杆(塔)两侧的不平衡张力加剧，当张力不断加大，直至到达杆(塔)、导线所能承受的极限时，就出现了导线断落或杆(塔)倒塌的现象。因此，在灾后恢复和未来的设计改造中，应尽量避免大高度差、大距离和大转角。二是线路上有大密度的雨凇覆冰时，因为雨凇覆冰是“湿”度增长过程，其粘附能力强，不易掉落。在风的激励下，导线会产生大振幅、低频率的自激振动。当舞动的时间过长时，会使导线、绝缘子、金具、杆(塔)受不平衡冲击疲劳损伤。
View Article →
输电线路覆冰危害的特点
View Article →

03/19/2019

线路故障原因及预防措施

①大风的影响：风力过大，使悬垂绝缘子串倾斜，弧垂增大，空气绝缘间隙变小，易发生相间短路、导线烧断事故。风力超过杆、塔机械强度时，使杆、塔倾斜、损坏、导线振动、跳跃、碰线，可能引起短路使断路器速断跳闸。②雨的影响：毛毛细雨将使脏污绝缘子闪络、放电，损坏绝缘子。倾盆大雨将使河水暴涨、山洪爆发、山体滑坡，造成倒杆、断线。③雷电影响：雷雨季节，线路遭受雷击，雷电过电压使绝缘子闪络、烧伤或击穿爆炸，造成断路器跳闸。④大雾影响：大雾天气，空气相对湿度较大，绝缘子沿面闪络电压降低，发生闪络、放电、损坏绝缘子现象，严重时发生击穿闪络，将造成大面积停电。
View Article →
线路故障原因及预防措施
View Article →
Previous page
1
2
Online
微信号:123123123
Or scan the QR code image below and add my wechat
手机扫一扫加入我们
beifang
Hotline
18330770001 18330770001
Service time:
8:00 - 24:00
Customer
在线客服
Wechat
Zhang2
Wechat
Zhang
WhatsApp：
Manager Zhang
Skype:
manager

Contact Us

ADDRESS: Liangzhao Industrial Zone, Renqiu City, Hebei Province, China

Hebei North Electric Fittings Co., Ltd

冀ICP备13020566号-7       Power by 300.cn

facebook in Youtube tw skpe

Questions? Contact Us

Username used for comment:
客户留言
Description: