Lor900b Box Transformer Protection and Measurement Device

Product Description

LOR900B Box Transformer Protection and Measurement Device 1.Product profile
Traditional wind or photovoltaic power plants use decentralized equipment such as PLC, lightning protection module, PT, current transmitter, voltage transmitter, etc. to complete functions such as transformer protection, measurement and control, and information upload. Due to the use of multiple auxiliary devices, there are many wiring faults in the entire system, making debugging, operation, and maintenance relatively difficult. Simultaneously involving equipment from multiple manufacturers makes it difficult to coordinate the operation, debugging, and maintenance of the product.
The LOR900B box transformer protection and measurement device adopts an integrated design, which integrates multiple functions such as protection and measurement, non electricity protection, communication, and local control. One device can complete tasks that can only be coordinated by multiple devices, while ensuring the same functions such as protection, measurement and control, and information exchange of the transformer, reducing the difficulty of product use and operation and maintenance costs.
Centralized monitoring
Concentrate and combine the functions of various dispersed devices and instruments, monitor the current, voltage, oil level, oil temperature, and other electrical and non electrical quantities of transformers in real time, and form a fiber optic ring network through dual optical fibers to upload data to the main station.
Enhance the protection function of transformers
It integrates the functions of traditional transformer relay protection, such as three-stage overcurrent protection, zero sequence protection, overvoltage and low voltage protection, etc. Its protection function can be switched on and off, making it convenient for users to choose and use.
Accident recording and storage function
The device records the operating status of the transformer, and records SOE events such as protection tripping events, remote control events, switch displacement, and non electric displacement in chronological order. Users can delete them according to their needs (password required) for easy access and inspection.
On site operation
Compared to traditional monitoring solutions, this device is equipped with a display and keyboard, making it convenient for maintenance and inspection personnel to access monitoring, protection, switch displacement, historical records, and other information of the transformer on site.
Easy to maintain
The device adopts an integrated design, with relatively dispersed devices and instrument combination monitoring, reducing the complexity of wiring, simplifying maintenance procedures and costs. 2.Product Classification and Function Introduction

category	major function	900B-1	900B-2	900B-3
		Pure measurement and control	Ring network with optical fiber	With optical fiber ring network and communication manager function.
telemetering	Ac measurement:	√	√	√
	Three-phase current, three-phase voltage, frequency, power factor, active power, reactive power, active power and reactive power;
	6 channels of current and 6 channels of voltage	√	√	√
	DC measurement: 6 channels in total.	√	√	√
	Standard 2-way 4-20mA (can be increased to 3-way, please specify when ordering).
	Standard 3-way thermal resistor
remote signalling	40 channels are opened, of which the first 12 channels are fixed as non-electric protection signal inputs.	√	√	√
remote control	9-way relay output, used for protection output or ordinary remote control output.	√	√	√
protect	Non-electric quantity protection:	√	√	√
	Light gas, heavy gas, high temperature, ultra-high temperature, low oil level of transformer, high oil level, pressure relief valve, high-voltage fuse, phase A, phase B and phase C, non-electric quantity 1 and non-electric quantity 2.
	General protection:
	Three-stage current protection, zero-sequence current protection, overvoltage protection and undervoltage protection.
remote control	9-way relay output, used for protection output or ordinary remote control output.	√	√	√
communication	Two self-healing optical fiber communication interfaces can form an optical fiber ring network.		√	√
	2-way Ethernet communication interface	√	√	√
	1 485 communication port (can be increased to 2 channels, please specify when ordering)	√	√	√
agreed-upon stipulation	Standard 6-way RS485 interface (it can be increased to 10, please specify when ordering).			√
change	1-way Ethernet communication interface
record	Record the recent 35 accidents and operation records.	√	√	√

3.Technical parameter

technical requirement	Functional requirements	Application parameters
Auxiliary working power supply	Power input	AC/DC85-265V
	frequency	50Hz
	power consumption	Normal operation ≤ 10w; Device action ≤15W
current input	RatIng value in	5A(1A)
	measuring range	0~1.2In
	measurement error	≤±0.5%
	power consumption	≤0.5VA/ phase
Voltage input	Rated Un	100V/270V/690V;
	measuring range	0~1.2Un
	measurement error	≤±0.5%
	power consumption	≤0.5VA/ phase
Other measurement accuracy	frequency	≤±0.01Hz
	Power factor	≤±1.0%
	Active power/reactive power	≤±1%
Switch input	port number	40 road
	Input mode	Passive contact (with 24V drive)
	Isolation mode	Photoelectric isolation, isolation voltage 2500V V.
Contact output	port number	9 road
	operating voltage	AC250V,8A
	Input mode	idle contact
	Isolation mode	Photoelectric isolation, isolation voltage 2500V V.
communication interface	communication interface	2 optical ports, 2 Ethernet ports, 2 485 ports,
		Up to 10 485 protocol conversion modules can be configured.
	Isolation type	Photoelectric isolation
	Baud rate	RS485:1200bps~9600bps
		Optical port: 155M, 1310nm, ST interface, single mode ≥20Km.
		Ethernet: 10M/100M adaptive
	communication protocol	Modbus/IEC 60870-5-103/104, etc.

4.Product installation and schematic diagram
4.About our service
* We could provide 7* 24-hour phone call after-sales service.
* We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.
* Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.
5.Package and ship

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