State Grid Corporation of China

Chang Zhou Current Supply Company of Jiangsu Electric Power Company

Jiangsu Electric Power Company

State Grid Jiangsu Electric Power Company

State Grid Chang Zhou Current Supply Company of Jiangsu Electric Power Company

Zhen Xu

Jianjun He

Liang Cao

Shu Chen

Hui Zhu

Yongming Qin

Yi Wang

Honghai Yin

Zehua Zhang

Zuchen Dong

Hao He

Jianyang Yu

Liang Ji

Bing Gong

Jiaohong Luo

The present disclosure provides an amplitude limiting system of insulated aerial work platform, including an insulated aerial work platform having a telescopic arm, an insulated folding arm and retractable supporting legs, a luffing cylinder, a first pressure sensor, a balance valve, a selector valve, a flow meter, and a controller; the luffing cylinder is installed between the telescopic arm and the insulated folding arm and includes a hydraulic pressure chamber; the first pressure sensor is connected to the hydraulic pressure chamber of the luffing cylinder and is electrically connected to the controller; the balancing valve is arranged on the luffing cylinder; the selector valve is connected to the balance valve; the flow meter is connected in between the selector valve with the balance valve and is electrically connected to the controller.

Amplitude limiting system of insulated aerial work platform

The present disclosure provides a quick connect and disconnect cable junction box, including: a box body, insulators, copper busbars, connection wires, T-shaped cable terminals, linear adapters, and an insulation spacer. The insulators, the copper busbars, the connection wires, and the T-shaped cable terminals are positioned inside the box body. The linear adapter includes a conductive rod, an insulation layer, a quick engagement connector, and a housing. One end of each of three linear adapters is electrically connected to the T-shaped cable terminal inside the box body. The three linear adapters, three T-shaped cable terminals, three connection wires, and three copper busbars form a three-phase electrical path. During operation, the three copper busbars are correspondingly connected to three phase lines of an incoming cable of a ring main unit; and the three linear adapters are engaged with quick connectors of three bypass cable connectors via the quick engagement connectors thereof.

Quick connect and disconnect cable junction box

The present invention provides an intelligent calibration system for backup-power automatic switching devices, including a power supply module, a control module for logic controls, a voltage output module and a current output module for outputting simulated voltage and current, a signal feedback module for sampling outputted voltage and current signals, a simulated circuit-breaker group, an auxiliary relay, a USB interface for communication, a keyboard for information input, a display module for information interaction and real-time panel presentation, an interface module to facilitate plug-in wires, an indicator light for indicating operation status and a computer for controlling the testing globally. The present invention facilitates easy and fast wiring, and conveniently displays operation interface and related information. The operation is intuitive and simple, overall test efficiency is improved. Further, comprehensive tests for BAS devices can be performed with high measurement accuracy, while avoiding influences of human operations to the test results.

Intelligent calibration system for backup-power automatic switching device

The present invention provides a portable single-phase air bypass switch for live power distribution network, including a housing member, a positioning member, a conductive circuit member, a clutch member, a switch-closing member and a switch-opening member. The positioning member includes a positioning nut, positioning frames, and a positioning column. The conductive circuit member includes a conductive end cover, an upper conductive rod, a pressing sleeve, a coupling nut, a conductive sleeve pipe, a stationary contact, a movable contact, and a lower conductive rod. The switch-closing member includes a switch-closing energy-storage rod, a switch-closing energy-storage ring, a switch-closing spring, a switch-closing positioning pin, a switch-closing release ring, and an inner sleeve pipe. The switch-opening member includes a small shaft, a switch-opening spring, a stopping block, a switch-opening energy-storage shaft, a connection rod, a switch-opening energy-storage pressing head, a switch-opening positioning pin, and a switch-opening release ring.

Portable single-phase air bypass switch for live power distribution network

A harmonic protection method for a capacitor bank uses a harmonic protection apparatus, which includes a CPU unit, a current and voltage sampling unit, and a protection device. The CPU unit obtains effective value Iof fundamental wave current of the capacitor bank, and effective value Iof the n-th harmonic wave current of the capacitor bank, where n is harmonic order and ranges from 2 to &#x221e;, and calculates the true effective value I of current of the capacitor bank by 

Harmonic protection method for capacitor bank

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Changzhou, China

Zhen Xu