Basic Info.
Output Signal Type
Analog Output
Production Process
Ceramics
Application
Switching Power Supply
Product Description
SNV-EKL3.2 Earth fault and short circuit indicator Description SNV-EKL3.2 Earth fault and short circuit indicator, it Widely used in various ring cabinets, high-voltage switch-gear and cable branch box in power system, can accurately and reliably detect the fault section and fault type of power grid. The use of Earth fault and short circuit indicator is an efficient way to check cable fault, and is an effective way to improve the operation level of distribution network and the efficiency of fault handling. The design uses electromagnetic induction, photoelectric conversion, signal optical fiber transmission and single chip microcomputer control technology to make fault alarm with high accuracy and strong anti-interference ability.Equipped with fault remote transmission port, suitable for distribution network automation; Battery low power alarm indication; Low-power design, high-capacity lithium battery power supply, long battery life (more than 8 years); external structure using card or lock design, the whole machine is easy to load and unload.Function character1) Intelligent detection of short-circuit and ground fault and through the corresponding LED indicator on the panel to indicate.2)Display Monitor panel designed with button, it is convenient for reset/or test.3)It can set The pulse width time(Response time) of fault current for preventing incorrect fault indication caused by surge current.4)It can set the reset time.5)It can set the short circuit alarm current via the Dip on short circuit sensor6)It can set the earth fault alarm current via the Dip on display unit monitor.7)It can reset and detect the remote fault indication device remotely.8)It can provide switch volume for external devices through remote relay contact.;9)Remote fault indicating can be made by external devices.;10)Low battery display and alarmFunction description1) short circuit alarm indicating: when short circuit sensor detected a short circuit fault current, when the current is greater than or equal to the setting value, then the short circuit sensor send alarm signal to monitor panel through fiber. And the monitor will display the alarm signal, the short circuit fault LED will be flash.2) Earth fault alarm indicating: when the earth fault sensor detected a earth fault current, when the current is greater than or equal to the setting value, then the earth fault sensor send alarm signal to monitor panel through cable. And the monitor will display the alarm signal, at same time, the earth fault LED will be flash.3) Battery low voltage alarm indicating: the monitor use the battery to supply power. When the battery voltage is lower than the min. working voltage 2.7V, then the Low voltage alarm led will flash.4)Automatic reset: After the indicator alarm the fault, if there are without manual reset it, when the time reach our Reset time setting, indicator will automatically reset. 5) Manual Reset: After the indicator alarm the fault, user can press the button " reset/test" to reset it.6)Remote Reset: During indicator indicating fault, Through the pin 11-12 back of the monitor, connect the remote button to control the indicator reset.7)Remote Test: During indicator on normal condition, Through the pin 11-12 of the monitor, connect the remote button to operate simulation test.8) Remote indicating fault: Connect an External Lamp on the pin 9-10, when the indicator indicating fault, the External blink at same time, then achieved long distance indicating fault.9) Remote upload SCADA: connecting connect pin13-14, or Pin13-15, when indicator indicating fault, A signal will be upload to SCADA.Technology parameterVoltage grade | 3-40.5KV | | Battery life | ≥8year |
Frequency | 50HZ/60HZ | Low voltage alarm of battery | ≤2.7V |
Short circuit alarm current (7 levels) | 200/250/300/400/500/600/1000A | Short circuit sensor fiber length | 4meter, or customized |
Earth fault alarm current (6 levels) | 10/20/30/40/50/60A ,or customized | Earth fault sensor cable length | 5 meter,or customized |
Reset time (4 levels) | 4H/8H/24/36H | Load fluctuation and escape pulse time setting | Short circuit | 40/60/80/160ms (4 levels) |
Rated frequency withstand voltage | 2KV/1min | Earth fault |
Relay contact capacity | ≤95W | work environment | Temperature | -40ºC~+60ºC |
Alarm current accuracy | ±10% | Humidity | ≤95%RH |
Working power | ER17505 battery | 3.6V/3500mAh | Use for cable diameter | Short circuit CT (Fiber, Type S) | A | Ф20mm~40mm, Normally |
B | Ф300mm~70mm customized |
Working current | Standby state | ≤10μA | Earth fault sensor (Cable, type E) | A | Ф60mm~100mm Normally |
Working state | ≤1mA |
Indicator protection level | Monitor panel | IP 40 | B | Ф80mm~130mm Customized |
Sensor CT | IP 67 |
Operation description1) Test: Before installation, press the monitor panel's " reset/test " button, 1 second. Then the indicator will go into the self- checking state:* Battery low voltage led flash 1 times, (if the battery low voltage, it flash 5 times); *And the 4pcs fault indicating led flash, after 10 second, monitor panel will recover back the normal state. Or press the " reset/test" button to finish the self-checking state.2)Clean Alarm: After fault indicating, when we solve the line or device problem, we can press the " reset/test" button to clean alarm, or wait it automatically reset after reset time setting value.3) set the fault current. 3.1 ) set the short circuit sensor fault current. (see figure 1.2)Push Dip switch of the short circuit trip current to On position as below:1=200A; 2=250A; 3=300A;4=400A; 5=500A;6=600A; 7=1000A Factory default setting:1000ANote: only can make one level is ON.3.2) Set the earth fault sensor fault current:(see figure 1.3)Open the front panel cover, then Push Dip switch of the Earth trip current to On position as below:1=10A 2=20A 3=30A 4=40A 5=50A 6=100Factory default setting:40ANote: only can make one level is ON.3.3 ) set the reset time.(see figure 1.3)Open the front panel cover, then Push Dip switch of Reset time to On position as below:1=4h 2=8h 3=24h 4=24HFactory default setting:8 hoursNote: only can make one level is ON.There are 4H, 8H,24H,36H. Factory default setting:24H(see figure1.3)3.4) set delay time: There are 1=40ms 2=60ms 3=80ms 4=160ms Factory default setting:40ms
Address:
Qianshan, Mingzhu Road 3021, Zhuhai, Guangdong, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics, Industrial Equipment & Components, Instruments & Meters
Management System Certification:
ISO 9001
Company Introduction:
Zhuhai Snova Technology Co., Ltd
1. Cooperative Partner and pratical application
SNOVA is one of the largest and reputed manufacturers of electrical components for Fault Indicator (Used for switchgear Like AIS, GIS, RMU, SF6, Safelink, Circuit breaker, etc)
2. Our business Range
SNOVA do two kinds of business like OEM/ODM. We have invest the abundant fund to our device and have the professional engineer team which would help our customer to solve the problem.
3. Reasonable Price with good quality
SNOVA would supply the good quality with attractive price products in order that you would win in your market.
4. Our Main Products for MV Indoor/Outdoor switchgear as below:
A. Fault Indicator
B Short Circuit and Earth Fault Indicator
C. Overhead Line Ground Fault Indicator
D. Overhead Line Remote Earth Fault Indicator
E. Smart Cabinet Dehumidifier
F. Temperature and Humidity Controller
If you are interested in our products, please contact with us.
Contact: Andrew Mao Job tittle: General manager
Mobile: 0086-13570657698
And please leave your e-mail or other contact information, we will reply to you in time.