Product Introduction Dc resistance around the group of measurement transformer is a very important test project. In the "test regulations of electric power equipment" its order ranks the second in the transformer test project. The "regulations" stipulates that pick up overhaul minor repair change sub-pick up head position fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group whose purpose is: (1) check the welding of line and lead line around the group; (2) check if the pick up touch is good; (3) check whether there is a broken place around the group or leading line; (4) check the correctness of the parallel branch whether there is a few parallel guide lines winding into the winding group or a few broken line situation; (5) check whether there is a short circuit between layers and turns. The interface design of Dc resistance rapid test instrument adopts microcomputer control big screen backlit Chinese liquid crystal screen show operation is simple show clear man-machine interaction interface friendly measurement process and instrument work state prompt is clear and sufficient no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology with stable test high measurement precision and fast speed improving measurement efficiency and reducing work intensity of operation personnel. Technically "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size light weight easy to carry. Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer transformer winding group and other perceptual low resistance. product names Dc resistance tachometer Transformer dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Dc resistance rapid test instrument
FRC A/D digital kilovoltmeter consists of a high stabilized resistive-capacitive type passive high-voltage divider and a precision digital voltmeter for measuring AC/DC high voltage on the site of electric power systems and in various high-voltage laboratories. Both of them with measuring cable, power supply cord, and operating manual are placed in a portable aluminium case for easy carrying and use. The AC/DC digital kilovoltmetre is composed of two parts of a high voltage divider and a digital kilovoltmetre. The high voltage divider is of a passive resistive-capacitive type, assembled from precision low temperature drift resistors and high quility condensers. Digital kilovoltmeter consists of ture RMS value circuit, peak values measuring circuit and digital voltmeter. Voltage divider is connected to digital kilovoltmeter by a coaxial measuring cable. The high voltage is reduced to sample value by the voltage divider, and be fed to digital voltmeter. Through function selector, the voltmeter can display DC,AC effective(RMS)value, AC peak value, and AC peak/ 2 value with high measuring accuracy and convenience in use.
a) Screen display: high-contrast 3.5 TFT color screen. b) Data storage: 1000 groups of test data can be stored. c) Working power supply: embedded 8.4V lithium battery for 8hâ??s continuous operation. d) Power supply: input 100-240VAC output 8.4V/3A charging time 3 4h. e) Boundary dimension:230 * 120 * 55(mm). f) Instrument weight:1.5kg. g) Environment temperature: -25 45 h) Storage temperature: -35 60 Complete configuration: host machine sensor AC adapter connecting cable and transport case.
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1. Electronic control and tune easy to operate. 2. The date of voltage and current are recorded in the panel reading without conversion. 3. One minute timing and tip function. 4. Perfect over-voltage and over-current protection function inside also zinc oxide over-voltage protection outside which ensure safety of generator. 5. Portable design suitable for on-site testing. 6. Four parts separated: control unit Intermediate Frequency Transformer doubler and accessories all packed with special shockproof aluminum alloy cabinet easy to move.
Working Principle When measured piece Cx has partial discharge under testing voltage the circuit will have pulse current which get by the input unit. The pulse signal is amplified by front amplifier and the frequency band is chose by filter amplifier then been amplified to needed amplitude by the main amplifier. The pulse signal will be displayed on oscillograph screen. The pulse value is also sent to the pulse peak meter and displayed immediately. The time window unit chooses a working period of the pulse peak meter during each cycle of testing voltage and it increases the brightness of the relevant displaying area in this time. In this way it can avoid the disturbing of fixed phase. Input discharge volume to the measured piece Cx through JZF series PD external calibrator adjust the fine adjusting knob till the displayed value is equal to the discharge volume the discharge can be read directly and conveniently on the meter without counting. The testing voltmeter will have an over zero mark signal of testing voltage through the voltmeter resistance R and the zero mark pulse will be displayed on oscillograph screen. The testing voltage can be displayed on KV meter.
Product Introduction Designed for the requirements of the equipment it is widely used in the AC withstand voltage test of the 35-220kV class string-type voltage transformer of the power system to evaluate the main transformer from the insulation strength and also to the winding of the motor and the small transformer. Induction test; can also be used as a short-time 150Hz power supply. product features Product Characteristics 1 the company's Triple frequency transformer is simple to operate reliable performance 2 can well meet the needs of transformers transformers withstand voltage
Product Introduction Digital PD Detector Partial Discharge Testing Digital PD Detector Partial Discharge Testing Product Overview The transformer partial discharge detection device and the sensorwith the software using advanced signal processing technology covering a wide range of statistical methods and graphical display mode and coming with highenergy lithium batteries can flexibly achieve the detection of transformer partial discharge signals and ultrasonic signals capable of full range of detection for the transformer's partial discharge. Partial discharge detection location detect the partial discharge changes in the transformer's internal during the operation by examining the partial discharge conditions of the device to analyze the insulating state of the transformer. High frequency current transformers (pulsed current method) an ultrasonic sensor (ultrasonic method). Through a variety of means to suppress various external noise interference it improved signal to noise ratio and the measurement accuracy. product features Product Characteristics Digital PD Detector Partial Discharge Testing Working Condition Altitude 3000m Environmental Temperature -20~60C Relative Humidity 95%
Product Introduction Insulation resistance tester dedicated to the measurement of water-cooled generator test but also can be used for laboratory or field testing insulation testing to do. Output current greater than 25mA. The maximum output voltage of 2500V. Includes high-precision micro-current measurement system digital boost system. Just use a high-voltage lines and a signal line connecting the test product can be measured. Automatic measurement the results from the large screen liquid crystal display and store the results. Product Characteristics First the main features 1. 32-bit micro-controller Chinese user interface easy to operate. 2. Automatically calculates the absorption ratio and the polarization index and automatically save 15 seconds 1 minute 2 minutes 10 minutes to facilitate analysis of data per minute. 3. Output current (2500V the output is greater than 25mA) short-circuit currents greater than 40mA. 4. A fully enclosed high-voltage generator module technology the protection of the internal resistance safe and reliable. Anti-interference ability to meet the EHV substation on-site operation. 5. Automatic discharge test is completed and real-time monitoring the discharge process.
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LSG-6000 Moving Detector Goniophotometer Mirror Type C (updated version for LSG-5000/LSG-3000) is for LED measurement and completely meets LM-79-19 Clause 9.3.1 requirement. For candela intensity distribution, EEI, color temperature distribution and IES, LDT files measurement.
It's Simple automatic operation, Continuous measurement & digital display of all or any selected gas and derived parameters makes it a valuable aid for on-site instant analysis and follow- up action. Its data logging and computer features can be used for further detailed analysis. On Startup , the instrument automatically goes through complete self integrity check, and displays the current parameter reading. On/Off, FN & EN are the three keypad switches provided on the instrument panel.
Accurately measures voltage transformation ratio of single phase/3 phase delta or star connected transformers, CTs, PTs, power transformers. Features - Automatic operation. No balancing required - Protection against any wrong connections - True 4 terminal measurement - Testing parameters Test Voltage and Ratio Range is customizable to clients requirements - Available models ATRM-1M and ATRM-1uP (additional cost)
HV Breakdown Tester can test electrical insulation ability and electric strength Features - Available in 5KV and 10KV (additional cost) - 3 1/2 digit LED display - Selectable trip current 5mA, 10mA, 100mA - Built-in protections of Zero start protection, Open Ground protection, Interlock protection - Customizable for Leakage current, DC Volts, etc at additional cost
Designed for testing electronic components like paper capacitors, plastic capacitors, ceramic capacitors, insulators, semi conductors, switches, connectors, transformers, motors, etc Features - Push Button controls - Overload & Short Circuit protection - Guard Terminal provided - Suitable for testing Earthed samples
Suitable for testing traction motor, Single Phase & Three Phase winding, LT, AC, DC motors and wound stator coils. Features - LCD Oscilloscope with sweep rate 60uS/div to 100ms/div - Pass/Fail indication Green/Red with user settable Error - Voltage, Sweep Rate & Error setting adjustment via front panel knob - Compact for convenient portability
Suitable for testing traction motor, Single Phase & Three Phase winding, LT, AC, DC motors and wound stator coils. Features - Fully Automatic with Laptop and Windows (Win 7 above) based software - Stator Winding & Armature Winding tests - Master less testing - Statistical analysis, Cumulative reports, Individual Pass/Fail reports - Available in 5KV, 10KV (additional cost), 15KV (additional cost)
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