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td3810 field detector for three-phase power devices

用于现场考核单 / 三相电能表检定装置及其标准电能表、单 / 三相标准功率源等设备


电量测量:电压最大达 825 v,电流最大达 120 a

谐波分析: 2 ~ 64 次谐波测量

电能计量、磁场测量、表位差测量、时钟测量等

overview

model td3810, a high-precision three-phase standard, can simultaneously measure multiple electrical parameters in an ac circuit by three-phase y/v and other wiring modes, such as voltage, current, frequency, phase, harmonic, active power/electric energy, reactive power/electric energy, apparent power, power factor, etc.

meanwhile, model td3810 is a field detector for three-phase ac electric energy meters. the optional accuracy classes of power and electric energy are 0.01 and 0.02.

applied to calibrate ac standard source, and can be used as a standard for electric energy metering.

applications (class 0.01)

● calibrate single-phase or three -phase ac voltage or ac current standard sources (class 0.02 and below) 

● calibrate single-phase standard electric energy meters (class 0.02 and below)

● field calibration of single-phase or three -phase electric energy meter calibrators (class 0.02 and below)

functions

● electrical parameter measurement: ac voltage is from 6 v to 528 v, ac current is from   1 ma to 120 a, automatic or manual switching on all ranges.

● waveform display: oscilloscope function can display the waveform of the measured electrical parameters in real time.

● harmonic analysis: measure 2nd to 64th harmonic, analyze harmonic content and total harmonic distortion, and draw harmonic histogram.

● phase measurement: measure phase difference between the three-phase electrical parameters by synchronous sampling, and intuitively display by phasor diagram.

● electrical energy metering: standard energy pulse i/o function can be used as a standard for three-phase ac electrical energy metering.

● magnetic field measurement: measure the magnetic induction or other weak ac magnetic field at the measured meter position of the electric energy meter calibrators.

● meter potential difference measurement: measure the meter potential difference of the calibrators for ac electrical energy meters.

● clock measurement: a built-in pps standard second pulse i/o function can calibrate time for the measured devices with the ability to sustain voltage of 380 v.

● other function: temperature and humidity measurement, stability test, trend curve display, data statistics and analysis, data linear calculation, power constant measurement, etc.

features

● current input just with a pair of terminals. no shifting on the primary side of the transformers, it will not cause damage or change the measurement accuracy no matter which range suddenly enters a large current.

● high reliability, the switch will not damage the instrument in a limit state (e.g. 500 v, 100a), but can also ensure the value accurate.

● minimize signal conversion, adc and other circuit drifts by self-calibration function to ensure values accurate for a long-term. the self-calibration function is still effective even with 100 a dc current in the loop.

● the temperature coefficient of voltage or current is less than 0.5 ppm/k, the 1 year change rate of major specifications is less than 50 ppm, and the average trouble-free running time of the instrument is more than 10,000 hours.

● good electrical isolation and protection between ac voltage and ac current measurement loop.

● large lcd touch screen, more intuitive of value display and easier operation.

● easy to set up automatic detection system via the built-in rs-232 interface.

● the proprietary software that meets the requirements of jjg 597-2005, supports on-site to analyze errors, record data and print reports for the measured devices.

● strong adaptability and expandability to meet the needs of upgrading the technical standards of electric energy meters.

electrical specifications

ac voltage

1

measurement characteristics

● range switching: automatic or manual

● measuring range: 6 v to 528 v

● minimum resolution10 μv @ 60 v range

● display: 7 digits

ac current

2

measurement characteristics

● range switching: automatic or manual

● measuring range: 1 ma to 120 a

● minimum resolution: 10 na @ 20 ma range

 display: 7 digits

frequency and phase

3

power and electric energy

4

measurement characteristics

● power / electric energy measuring range: combination of dc voltage and dc current

● power factor measuring range: -1.000 000…0.000 000…1.000 000

power pulse

● input of standard electric energy pulse: 
frequency ≤10 khz, input level from 0 to 3.3 v…24v.

● output of standard electric energy pulse: 
high frequency fs @ 60 khz, low frequency fs @ 6 hz.

magnetic field

5

measurement characteristics

● probe: coil induction probes

● display: 5 digits

● notes: applied to measure the density of magnetic flux at the measured meter position of the electric energy meter calibrators.

meter potential difference and clock

6

general specifications

● line power: 220 v ±22 v, 50 hz ±2 hz

● maximum power consumption: 80 va

● operating environment: +15 °c to +35 °c, 20 % to 85 % r·h, non-condensing

● storage environment: 0 °c to +40 °c, <95 % r·h, non-condensing

● communication: rs-232 interface

selection guide

7

appendix 1. list of compliant standards for the detector

8



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