Beijing Tianyihongda Science & Technology Development Co., LTD
| Payment Terms | Western Union, L/C, T/T |
| Supply Ability | 3000sets per week |
| Delivery Time | 3000 sets within 1 week |
| Packaging Details | 56*40*34cm,48 pcs /box ,standarad export box |
| alarm | red flag and flashlight |
| red flag and flashlight | radio frequency |
| receiving fault information | RF |
| remote transmission | GPRS/GSM |
| Brand Name | Tianyihongda |
| Model Number | TYHD-C1 |
| Certification | type test report |
| Place of Origin | Beijing,China |
View Detail Information
Explore similar products
Short Circuit Earth Fault Indicator Monitor System With Wireless / Optical Fiber
Data Transmission Earth Fault Locator , Overhead Line Ground Detector For
Automatic Earth Fault Indicator Optical Fiber Network GSM / GPRS Sending
Optical Fiber Ground Fault Indicator , Information Reliably Earth Fault
Product Specification
| Payment Terms | Western Union, L/C, T/T | Supply Ability | 3000sets per week |
| Delivery Time | 3000 sets within 1 week | Packaging Details | 56*40*34cm,48 pcs /box ,standarad export box |
| alarm | red flag and flashlight | red flag and flashlight | radio frequency |
| receiving fault information | RF | remote transmission | GPRS/GSM |
| Brand Name | Tianyihongda | Model Number | TYHD-C1 |
| Certification | type test report | Place of Origin | Beijing,China |
| High Light | earth leakage indicator ，underground electrical fault locator | ||
This kind of device is applied to the overhead power distribution network automatic system from 6KV to 35KV,is used to improve the safe and reliable operating performance through centralized monitoring the current, temperature and fault condition on the power distribution circuit.
Short-circuit principle:
when phase-to-phase short-circuit happens, it is equivalent to directly connected between two power, there will be a very large current flowing through the return circuit of substation and fault point, meantime, the relay protection equipment in the substation will start on protection according to the well-setting rules, which will make the lines switch off. So there are 4 conditions to judge the short-circuit fault as following:
1)there is electricity in line
2)a sudden change large current is above a certain value (this value can be set by actual condition after leaving factory)
3) The large current duration time is not more than 3 seconds 0.02s≤△T≤3s, △T is duration of sudden change current.
4)The line will be in the state of power off in 3 seconds.
5)When it meets all the four conditions above, the indicators can judge the short-circuit happened in this line and send the fault information to central station.
Earth fault detection principle:
When single phase earthed happens, many kinds of complex transient phenomenon according to different earthed conditions such as metal earthed, high resistance earthed. The transient state phenomenon includes the distributed capacitor discharge current of line-to-ground, the earthed line voltage to ground is decreased. For all these phenomenon, the judging criteria of earth fault of our products is as following:
1)there is sudden increased transient state capacitor current in the line: the current is above a certain value
2)the earthed line voltage is decreased 3KV above.
3)judgment of detecting earthed current power direction.
When the three conditions above can be meet, the detecting terminals can judge the fault point where is after the alarming indicators which will send the fault information to the central station.
System Composition Structure and detailed instruction:
This system of device is composed of communicable fault passage indicator, data transmission unit, main station software and hardware.
| No. | Name | Model | Note |
| 1 | Communicable FCI | HR-1PC-T | alarm with red flag and flashlight, solar panel to take electricity, radio frequency transmission |
| 2 | Detecting terminal Unit | HR-1PC-D |
Solar panel taking electricity, RF receiving fault information, GPRS/GSM remote transmission, each set can be equipped many sets of communicable FCI |
There is type test report for it, test items as following:
|
Type Test Items
| 1. appearance and structure 2.function 3. electrical device performance 4.low temperature performance 5.high temperature performance 6.alternating temperature humidity7.vibrationendurance 8.incline drop test 9. electrical device life 10. static electricity and elecro-discharge immunity test 11.radio frequency electromagnetic field radiated immunity test 12.surge impact immunity test 13. power frequency magnetic field immunity test. 14. Adjacent interference test 15.short-circuit withstand impact test 16. fire hazard test 17. power consumption test 18. protection grade test 19. gripping strength test of grip structure. |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2014
Total Annual:
3000000-5000000
Employee Number:
150~180
Ecer Certification：
Site Member
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 adva... 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 adva...
Get in touch with us
Leave a Message, we will call you back quickly!