Basic Info.
Usage
Communication Relay
Protective Characteristics
Enclosed Relay
Action Principle
Numeric Type
Type
Electric Parameter Relay
Rated DC Voltage
220V or 110V
Trademark
Guotong Electric
Transport Package
Carton, Export Type Packing
Specification
ISO 9001 certificated
Origin
Changsha City, Hunan Province
Product Description
1. Scope of ApplicationGTG-84X digital generator protection measurement and control device is applicable to 50MW and the
below capacity of running alone or with system of parallel operation of generator protection and monitoring device, the series device with other protection measurement and control device and LCU (units and public) composed of power plant automation monitoring system, completion of the power plant automation control and protection.2. Function and CharacteristicsFunctional Configuration Table
Classify | Function Name | GTG-841 | GTG-842 | Description |
Protection Function | Generator differential motion protection | √ | | Description 1 |
Generator transverse differential protection | √ | |
Generator stator overload | | √ |
Generator stator grounding | | √ |
Generator rotor one-point grounding protection | | √ |
Generator rotor two-point grounding protection | | √ |
Loss of excitation protection | | √ |
Generator frequency abnormal protection | | √ |
Generator reverse power protection | | √ |
Generator over voltage protection | | √ |
Generator low voltage protection | | √ |
Generator compound voltage over current protection | | √ |
Generator negative sequence over current protection | | √ |
Generator quick break protection | | √ |
Generator zero sequence over current protection | | √ |
Exciting dynamo(transformer)quick break protection | √ | |
Exciting dynamo(transformer) over current protection | √ | |
Generator non-electricity protection | √ | |
TA disconnection test | √ | | |
TV disconnection test | | √ | |
Operation circuit | Power completely independent containing anti adjustable locking function operation circuit | √ | | |
Control circuit abnormal alarm | √ | | |
Measurement And Control Function | 16 way remote signal input collection, device remote signal shift, accident remote signal | √ | √ | |
Normal circuit break remote deciliter, remote deciliter | √ | √ | |
P, Q, IA, IB, IC, Ua, Ub, Uc, COS, f | | √ | |
Switch accident in statistics and event SOE etc | | √ | |
Fault recorder | √ | √ | |
Time hack | Realize GPS time hack,network time hack | √ | √ | |
Communication | Ethernet,RS232/458 communication interface | √ | √ | |
Description 1:
:All actions have the exit protection are all arranged three outlet, respectively for the stepout, shutdown, de-excitation, corresponding action by soft pressure control and exit from the control word changeover;
Generator protection configuration as shown below:
Main Features
4U standard aluminum chassis, combination of plug-in structure, after the plug case, each functional module design alone, electricity are completely separated, strong anti-interference ability, convenient field maintenance;CPU intelligent card design, open into the open plug-ins to achieve real-time complete self-test; can be detected in each relay coil;Plug-in based on CANBUS bus links between, reduce the connection between the connector plug, bad real time detection;Double 32 computer systems, the redundant system; protection function using the Dezhou Instrument Company produced the 32 bit floating-point DSP processor, program and data in the chip operation; operation speed, high reliability;Man-machine interface, network communication and other management functions by Philips Company produced 32 ARM MCU, speed, on-chip memory capacity big, strong ability of network interface;16 AD sampling, high measuring precision; weekly wave 48 sampling points, harmonic processing capability;Protection module using computer assisted graphical interface design is convenient for the two series of products development and functional modifications, flexible, efficient engineering design;Complete the circuit breaker control circuit is provided with a remote control, jump, closing, spring without stored energy blocking close function etc;Use 192*64 monochrome graphic LCD, Chinese menu interface; the flexibility to choose double Ethernet and double 485 interface;Can save at least 500 report recent incidents and operation report;User management module using real-time multitask operating system, network interface, tasks such as real-time;Can store 10 sets of protection setting value, double value zone self-test and mutual combination, setting change safely and convenient.Based on electric power industry standard DL / T667-1999 (IEC 60870-5-103) standard communication protocol, and convenient with microcomputer monitoring or protect management computer network communication.
3. Technical Index3.1 Rated Data
a. Rated DC voltage: 220V (110V orders indicate) allowable deviation +15%,-20%
b. Rated AC data: phase voltage 100/√3V
Zero-sequence voltage 100V
AC current 5A (1A orders indicate)
Rated frequency 50Hz (60Hz orders indicate)
c. Thermal Stability:
AC voltage circuit: long time operation 1.4Un
AC current circuit: long time operation 2In
10s 20In
1s 40In3.2 Consumption
AC voltage circuit: phase≤0.5VA;AC current circuit: when In=5A ,phase ≤1VA;when In=1A, phase≤0.5VA;Protection power supply circuit: when in normal work, ≤10W; in protection action, ≤15W.
3.3 Environment Condition
a. Environment temperature:
Work: -25ºC~+55ºC
Storage: -25ºC~+70ºC,Relative humidity of not more than 80%, the ambient air does not
contain acidic, alkaline or other corrosive and explosive gases prevent rain, snow indoor;
the limit without applying excitation volume, device is not irreversible change in appearance,
temperature after recovery, device can work normally.
b. Relative humidity: Most of the wet mean monthly maximum relative humidity is 90%,
and the monthly mean minimum temperature is 25ºC and the surface without gel. When the
maximum temperature is +40ºC, the average maximum humidity is not more than 50%.
c. Atmospheric pressure:80kPa~110kPa(Altitude < 2km).
Factory Show
Address:
A4 Building, Lugu International Industrial Park, No. 229, Tongzipo West Road, High-Tech Development Zone, Changsha, Hunan, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics
Management System Certification:
ISO 9001, ISO 9000
Company Introduction:
Changsha Guotong Electrical Technology Co. Ltd. Is a specialized corporate integrated R&AMP;D, design, production and sales of microcomputer protection and integrated automation systems fitting for hydropower, power, pump and thermal power stations etc.
As a rapid developing corporation, Guotong has been optimizing its products. Nowadays, GT8000 series has been attached most importance, which can be applied to transformer substation, hydropower station, switch station, pumping station, power plant, cement factories, railway, chemical, environmental protection, steel, coal and mine substation etc. Of 110kv and below. Moreover, Guotong Electric successfully constructed multi-level marketing networks around domestic and abroad, which is covered a number of countries and regions, such as the Middle East, East Europe, South Africa, Southeast Asia, and South America.
Guotong adheres to the spirit of market oriented and innovation as strength and keep technological leadership, transforming science and technology into reality. Therefore, Guotong has received a number of related intellectual property rights and internationally recognized.