ELECTRIC POWER DIVISION : +82-32-815-3741 jacobwktech@gmail.com / LEDLIGHTING DIVISION : +82-32-815-3745 wkled@naver.com

ELECTRIC POWER DIVISIONTransformer Wireless Load Monitoring System (DTMS),
Fault Current Path Monitoring System (FPI), POWER CT

DTMS

What is DTMS?

Distribution Transformer Monitoring System is the effective monitoring system that measures the status of current, voltage, load ratio Oil temperature, Oil level, Effective/Reactive power, Power factor, Neutral current of the transformer, Harmonics of voltage and current. After that It sends data to the server via a wireless network, a manager could be improved the power quality by managing of data through the internet. This system send SMS message to manager when the parameter exceeds alarm preset automatically.

Characteristics

Configuration


This device is a real-time measurement of transformer status and wireless communication (GPRS modem, RF modem) to use, and then sent to the server through the internet, and alert send to operating cetner Web Server or SCADA and worker’s cell phone. It is designed that accommodate ever-increasing network strains, the DTMS addresses all potential distribution transformer failure modes and detects early warning signs of asset deterioration.

  • Remote monitoring of voltage, current, temperature of each phase, oil aging, oil level and Etc.
  • Alarm over-voltage, over-current, overload and Etc.
  • Hourly Trend graph display and Report print

Probe

  • Measurement : Current and voltage at the same time
  • Wire length :< 1.8M
  • Voltage range : 0V ~ 300V D. Current range : 0A ~ 1,000A
  • Size : 84W × 68H × 27D mm(inner diameter 35mm/90mm)
  • Weight :250g / ea G. Accuracy : Class Ⅰ(±1%)

Temperature sensor

  • Supply Voltage : 3 ~ 3.3[V] B. Output Current : 10[mA]
  • Temperature Range : -40℃ ~ +125℃
  • Accuracy : -40℃ ~ +125℃ : ±4.0℃(max)
  • Temperature Slope : +6.25[mV]/℃
  • Output Impedance : 800Ω(max)
  • Storage Temp : -65℃ ~ 150℃

Oil Level

  • Sensing : using LED & Photo diode in order to analyze reflection and diffraction of light
  • Wavelength of light source : Max : 635nm, Min 720mcd

Oil aging

  • Serial I/F : 9600bps, 8bit, 1 stop bit no parity
  • 1~5 : New oil 6~10 : Used oil 11~15 : Waste oil

GPRS Modem (1.8Ghz, 19,200bps)

  • Power connector : RJ11 6-way
  • Input voltage range : 5 – 36V DC
  • Nominal Voltage : 12V DC
  • Power consumption : 5V 0,0075mA / 12V 0,520mA / 24V 1,770mA /32V 2,580mA
  • USB connector : max. voltage 30V, Low level 0 ~ 1V, High Level 4 ~ 30V
  • Antenna : Omnidirectional GSM 850 / 900Mhz, GSM 1800 /1900Mhz Impedance 50Ω

RF Modem

  • Frequency range : 424,000 ~ 424,950㎑
  • Channel space : 12.5㎑ C. Channel : 21 channel
  • Oscillating method : PLL( Phase Lock Loop)
  • Transmit speed : 1,200bps
  • Antenna : Amnidirectional
  • Data relay function : By pass

Battery

  • Lithium-ion, rechargeable

Degree protection

  • IP 54

EMC

  • EN 301 489-1 , EN 301 489-3

Safety

  • IEC61010-1

Overall size of equipment

  • (W x D x H) 240 mm x 220 mm x 85 mm

Weight

  • 1.4kg

Characteristics

Benefit

Photo of Installation

Colombia
Dubai
Ethiopia
India
Iran
Myanmar
Philippine
Vietnam

Certificate & Test Report