Introduction

This tester is improved on basis of GS-I tester, with additional display and print function for the AC impedance characteristic curve. It is also able to connect with PC to realize data transformation and test report edition. The tester takes use of the most advanced fast micro computer technique thus to get more functions and better performance.  

• Auto and hand operating test and measurement of various synchronous generators rotor AC impedance and its characteristic curve.
• Built-in large capacity memorizer which is able to memorize 1000 groups of data for transformation to the PC. Auto creation and edition of test report. Full auto acquisition, measurement, display, saving and print of all measured parameters such as voltage, current, impedance and power.
• Perfect over voltage and over current protection
• Could be as well used in no-load, short circuit tests for single phase transformers and volt-ampere characteristics tests for CT and arc extinction coils.
• Large screen LCD Graphic display

Technical Parameters

• AC impedance：0～99.999Ω   Grade 0.2
• AC voltage：0～600V       Grade 0.2
• AC current：0～120A       Grade 0.2
• active power：0～72KW      Grade 0.5
• frequency：45～75Hz          Grade 0.2
• Power supply：AC220±10%   50Hz

Introduction

Technical Parameters

Introduction

We developed this inner water cooled generator insulation resistance tester after research in similar testers at home and abroad. It is fastest way to inspect insulation performance and measure insulation resistance for electrical devices. The new instrument uses new measuring principle, is featured by easy operation, high precision, completely integrated circuit, anti-vibration, stability, large output short-circuit current, strong anti-interference ability in the field environment. It meets requirements of the current power plants. The instrument has timer, alarm and data storage capabilities, could easily measure insulation resistance, absorptance, polarization index, etc.

• Easy operation 
• Full auto measurement of insulting resistance, absorptance, polarization index  and other parameters.
• Data saving at 15th second, and every minute till the 10th minute. Able to save 10 groups of test data for file and analysis.
• Self-discharge when test is over.
• Large short circuit current output. Strong in anti-interference.

Technical Parameters

• Test range：5MΩ～10000MΩ
• Resolution：min 0.1MΩ
• Accuracy：±（10%．R±2bit）
• Test voltage：2.5KV
• Output short circuit current：≥3mA
• Display：lattice LCD
• Power supply：DC12V or AC220
• Ambient temperature：0～40℃
• Ambient humidity：＜90%RH, no dews

Introduction

• Combination of fault flash tester and path meter, lithium-powered, light weighted, easy-operating to carry, easy to test.
• Dual-waveform display for comparison, could be extended or compressed, convenient for the operators to determine and analyze the waveform
• Two charging modes，AC/DC change-over. USB connectable to computer
• Smart Charging mode, automatic protection when full charge

Technical Parameters

• Single-ended test distance：≥15km
• Minimum test distance 12m（with 30m extending wire to eliminate blind spots）
• Test error：Relative error＜1%，10km absolute error＜30m
• Resolution：V／50m    Display：320х240 LCD display with backlight
• Sampling frequency：25MHz Pulse output amplitude：≮160VpPulse width：0.2µs／2µs
• Output：internal micro-printer
• Power supply voltage：AC220V±10%，or DC power supply inside
• Path meter tracing frequency16KHz，Output power：≥100W，continuous / discontinuous output

Introduction

This instrument is the first to use industrial embedded computer platform. The whole system consists of three parts: failure test, path finding and measurement, precise point location. It is lithium-powered, portable, and easy to operate. Various faults of power cables with different voltage level, cross section, medium and material, including open circuit, short circuit, low resistance, high resistance leakage, high impedance fault flashover.

• Management: cable laying path distribution diagram. Detailed file information in user ‘s management area, including:  cable distribution diagram, number, starting position, depth and time of laying, cable media, joint position, maintenance records, failure causes, test report, cable test records and other information.
• Radio wave propagation speed could be measured in any cable length of which is known. Trend and burial depth of cable could be measured.
  Measuring distance: >40Km    Min measuring distance (blind zone):5～10m   Precise point location error: ±0.2m    Measuring error: <±1%
• Resolution: V/50m, V stands for propagation speed m/µs; software cursor 0.15m
• Instrument sampling frequency: 6.25,10,25,50,100 MHz (adaptive pulse-width)
• Power source：AC  220V±10%
• Standby time: about 4hours continuous use
• Relative humidity：RH≤85%(25℃)
• Signal frequency： 15KHz sine wave
• Output power：Pomax≥100W
• Output impedance：Zo=Zc (Cable features resistivity)
• Concussion: imtermittent
• Ambient temperature：-10℃～+40℃

Introduction

The apparatus is used to calibrate phase and phase sequence  for power lines and substations. It could inspect the phase, phase sequence and examine the electricity. With strong anti-interference capacity, because it is wireless,  it is safe, reliable, fast and accurate,  adapt to a variety of phase inspection  occasions. The apparatus  is comprised of  the host computer , X collector and Y collector , can test the same phase (sound reminder in the host computer), different phase, phase angle, phase sequence, reverse phase sequence,  transformer group, and examine electricity.

Technical Parameters

• Same phase define：≤15゜ as same phase
• Accuracy：Self-calibration error≤2゜，field test：same phase   error≤8゜，out-of-phase ≤13゜
• Sampling rate：3 Times / sec
• Host computer power：9V±2V
• X and Y collectors power supply voltage：12V±3V
• Working current of host computer：≤7mA
• Working current of X and Y collectors：≤5mA
• Sighting transmission distance between host computer and X, Y collectors ：X≥150m   Y≥150m
• Use condition：-35℃～+50℃
• Humidity：≤95%RH
• Storage：-40℃～+55℃
• AC voltage tested: 0.38kv～500kv

Introduction

The device includes sending device and receiving device. Sending device could either acquire local three-phase power signals by direct contact or wireless transmit phase relationship information. It is wave modulated. Receiving device could either acquire local  three-phase power signals by direct contact or wireless receive phase relationship information. It is also wave modulated. Receiving device could also demodulate the wave received, compare different phase relationship information to judge in-phase or out- of –phase and display the result through acoustooptical alarm circuit. The device is easy-operating, safe and reliable.

• Could pass through walls and partitions, etc.---widely usage
• High sensitivity for signal acquisition, good selectivity, acoustooptical indication-phase inspection distance 15m
• On-site inspection under power, easy-operation, safe and reliable
• Patented products, easy maintenance, could be operated by only one person—economical
• Strong, good sealing and light —portable
• Voltage class：10KV, 35KV, 110KV—could satisfy special voltage requirements