环网柜（Ring Main Unit）是一组输配电气设备（高压开关设备）装在金属或非金属绝缘柜体内或做成拼装间隔式环网供电单元的电气设备，其核心部分采用负荷开关和熔断器，具有结构简单、体积小、价格低、可提高供电参数和性能以及供电安全等优点。它被广泛使用于城市住宅小区、高层建筑、大型公共建筑、工厂企业等负荷中心的配电站以及箱式变电站中。
环网柜出现的时间不算长，却得到了广泛的使用，这主要是由于新发展起来的工业企业和事业单位的建筑物，从供配电的角度来看，以中，小型容量为大多数其配电变压器一般不超过1250KVA，长期稳定供电，高压开关不频繁操作。对于这类用户，环网柜的性能虽不是最完美的，但却是足够可以胜任的。随着大规模的城市建设，大量大型高层建筑物拔地而起，变配电所往往就设在楼下，根据消防要求，变配电设备必须“无油化”，根据建设面积的合理使用，变配电设备应该“小型化”，于是环网柜或真空断路器，干式变压器，干式互感器就进入了幢幢大楼。环网柜结构简单，运行可靠且安全，维修量很小，运行费用低，比起装有断路器的开关柜，优势很突出。环网柜要求负荷开关具有更高的性能和更小的体积，新型的负荷开关应运而生，这又反过来带动了环网柜的技术进步，当今的环网柜不但性能优良而且系列化了，这更扩展了环网柜的使用范围。
Shandong Qilin Electric Power Equipment Co., Ltd. is located in the Zibo High-Tech Development Zone in the state-level Zibo City. It covers an area of more than 150 acres and employs 300 people. The registered capital is RMB 100.1707 million. With a modern industrial plant of 30,000 square meters, the company has introduced internationally advanced CNC shear cutting machine processing equipment, flexible assembly lines for electrical equipment, silicone rubber kneading equipment, composite insulator single injection molding machines, crimping presses, and 1000kV power frequency withstand voltage machines. Various types of production and testing equipment.
The company's main products are two series of high and low voltage electrical equipment and composite insulation power products. All the products have passed the type test and product appraisal by the national authoritative department, and all performance index have met or exceeded the IEC standards, national standards and industry standards. The products have passed the national new technology and new product appraisal.
Our company always adheres to the quality policy of "Quality First, Customer First, People-Oriented, and Social Service" and has passed the National Compulsory Certification (CCC) audit and the CQC Organization ISO9001-2000 International Quality Assurance System certification audit. The company's products are widely used in Zibo City government agencies, large shopping malls, and high-end residential communities.
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