Nanjing Zhuneng Electric Co., Ltd. is an innovative technology enterprise specializing in R&D, production, sales, and engineering technology consulting services for power system automation secondary equipment and power comprehensive automation systems. The company advocates the principles of "pragmatism, refinement, and collaboration." , innovation" as the core corporate culture, and strive to form a good atmosphere in which employee development, self-worth realization and corporate development are harmonious. The main products include: relay protection, SCADA, distribution environment monitoring system, energy management system, communication protocol converter, station communication management , and automation supporting products.

he TY260 Intelligent general protection device is developed for application of ring power grid,designed and made by Zhuneng Electric company. It contains functions such as three-section inter-phase over current protection,inverse time limited over current protection with several curve action characteristics, two-section zero-sequence over current (earth grounding) protection,many times reclosing, over voltage,low voltage protection and intelligent switching input,and monitoring function includes electric-quantity measurement,remote control,remote signals...etc.

The protection relay adopts high integrating micro processor with bus in the chip to process the signals both from the voltage and current transformers, and output  these signals through digital logical operation control. The device sdopts seal case,maintenance-free design, sound anti-interference performance, and it specially suits for ring power grid running in worse environment and with limited installation position.

-- Low power consumption design technology is adopted for the whole machine,to ensure the protection functions can start quickly reliably at any conditions.

--The structure of the device is simple and smart, easy and flexible to install,suiting for the compact installation conditions of ring network system.

--The functions of this device includes:three-section inter-phase over current protection,two-section zero-sequence (earth grounding )current protection, a variety inverse curve options of IEC standard,and voltage protection.

--With surge current blocking function, to prevent incorrect tripping due to transformer no-load switching.

--Instantaneous trip protection uses a fast algorithm of Short Data Window, to ensure rapid removal of short-circuit fault to avoid override trip.

-- Protection configuration is flexible and complete , all protection functions can freely switch on or switch off through control figure.

-- The device has perfect measuring and controlling functions , and may measure electrical parameters such as voltage,current,active power,reactive power,

apparent power,power factor and so on; provides special remote control relays to realize remote control function; owns seven switching input circuit with customized pre-define function.

--Chinese LED display interface and multi-layer menu display is adopted,there are Chinese menu or English menu optional, time alarming window design,with friendly human-machine interface.

-- With automatic-dynamic-gain current measurement circuit design, the device has an extremely wide measuring range, so as to meet the transformers of secondary rate 1A or 5A current.

-- 50Hz, 60Hz system is customized by the user; the mode of zero-sequence collection is optional (external connection or internal algorithms).

--With a very wide operating temperature range and waterproof and dust proof design, it ensures reliable operations under extreme conditions.

--The device can record at least 60 times of historical events record, and no data will lose even the power is off,it is convenient to accidents recall.

-- The device provides RS-485 communication bus interface and provides open communication protocols to clients, so as to realize SCADA function.