Features for communicable indicators
Fault judge: identifying the Short-circuit fault , without testing the action value
reset way: Timing reset, manual reset , Intelligent automatic reset (A few minutes after Tripping, once the fault is cleared, reset itself upon the power return)
Handling charge: installing and removing while line is in charging condition
Rust and corrosion protection: Structure part is made of corrosion-resistant material
Surge suppression: to eliminate the wrong phenomenon of closing inrush current
The feature of the inverse: operating characteristics of maximum protection with the substation,to improve the action accuracy
Indication: Flashing and triggering a flip
Drop: Products from a height of 1 meter free fall to the concrete floor, no damage

The technical specifications:

Environment temperature: -35℃～70℃

Humidity: 5～95%RH

Altitude: ＜2000m

Voltage grade: 7～110kV

Frequency: 50 Hz

Power source: taking power through the line and Built-in lithium battery of 3.6V, more than 10 years

shelf lifeIndication: three high-intensity red LEDs, 360-degree visibility

Main features for Remote transmission units

1. GSM or GPRS forwarding

GSM (short messages) and GPRS (data) are mutually the standby mode, which are used to send the substation condition, circuit load current, indicator status and fault information to main distribution network station, to ensure the reliable transmitting of distribution network fault information.

2. Remote upgrade

The equipment program can be upgraded conveniently through master remote maintenance station.

3. Work mode setting

The terminal can be in the two-remote or one-remote working mode by setting the intrinsic parameters of remote terminal uint.

Two-remote working mode: the terminal is online in real time, and the circuit load current and circuit status can be uploaded.

One-remote working mode: the terminal is online regularly; when the circuit breaks down, the terminal opens GPRS module power supply and sends the fault information to main distribution network station.

4. Functions

4.1. Wireless receiving: the fault point information and load current information sent by indicator are received via short-range wireless network mode.

4.2. GSM or GPRS forwarding: GSM (short messages) and GPRS (data) are mutually the standby mode, which are used to send the substation condition, circuit load current, indicator status and fault information to main distribution network station, to ensure the reliable transmitting of distribution network fault information.

4.3. Solar power supply: the solar power supply mode is applied, and the maintenance-free 8AH lead-acid battery or 12AH lithium iron phosphate battery is provided, with the working temperature range of both batteries of -35℃~75 ℃ and -20℃～75℃ separately.

4.4 Optional communication protocol: IEC870－5－101 protocol or 104 can be selected for the connection with the third party equipment to upload the fault and shift information.

4.5. Remote upgrade: the equipment program can be upgraded conveniently through master remote maintenance station.

4.6. Convenient maintenance: the parameter setting and equipment maintenance can be performed conveniently via wireless setting terminal.

4.7. Event recording: the device can record the maximum 500 pieces of SOE events, providing the rich data support for system fault analysis.

Beijing TIANYIHONGDA Science & Technology Development Co., LTD is located in Lize Business Circle area, a prosperous business area in the center of Beijing City, China. is a high and advanced technology enterprise which is professionally engaged in research, production, sales and service of advanced smart monitoring technology products. We have great professional research team and techniques service team with rich working experience in the field of smart monitoring technology, cooperating with many famous Universities and Science Research Institutions on Smart Grid Automation, Smart Sensors and Wireless Communication and developing widespread market.

Our company has a great achievement in the development of Smart Grid, we by ourselves researched out the whole set of power distribution automation products such as DTU, FTU, RTU and so on. The central products and technology obtain national patents and certificate issued by relevant authoritative institution. The Fault Passage Indicators and Fault Location DTU systems has been stably running nearly 820,000 sets in the big city and middle city in domestic and overseas Market. accumulation of rich techniques and practical running experience on sites, these devices not only applied in the areas of national state grid, railway, petroleum, chemistry, coal, but also widespread used in the overseas countries such as India, Vietnam, Sri Lanka, Indonesian, Iran, Brazil, South Korea, South American and so on.

Meanwhile, the company is also successfully developing products to new monitoring fields, researched out Meteorological Monitoring Equipment, Environmental Monitoring Equipment and Video Monitoring Equipment and so on. All the products got the authoritative type test report and fully carry out and implement ISO9001 Quality Management System, these equipments have been successfully sold to domestic and overseas markets and approved by our clients.

Solar Power system with remote monitoring function is also successfully entering into market and get approval by the users. we have succefully finished many projects including commercial,residential applications for on-grid and off-grid applications such as 40KW substation, 60KW substation, residential ,countryside etc.

“ Sincerity is fundamental, clients is the first” & “strict quality control, earnest service supply” are our company’s management ideal, we sincerely invite all the cooperation partners working together to supply good qualities of products and service to domestic and overseas clients, devote ourselves to electrical smart grid development and monitoring technology development.