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td3300 three-phase reference multimeter 功率 / 电能的测量准确度 0.02 级 / 0.05 级可选
电量测量：acv 6 v ～ 825 v，aci 2 ma ～ 120 a，手动 / 自动量程换挡
波形显示：测量通道具有示波器功能，可实时显示被测交流电量的波形
谐波分析：测量 2 ～ 64 次谐波
相位测量：三相电量之间相位差，并直观显示
电能计量：标准电能脉冲输入/输出功能，可作为三相电能计量的标准表
overview
model td3300, a high-precision three-phase reference multimeter, 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.
the optional accuracy classes of voltage or current are 0.01 and 0.02, the corresponding optional accuracy classes of power and electric energy are 0.02 and 0.05.
applied to calibrate ac standard source, and can be used as a reference meter for three-phase electric energy metering.
applications (class 0.02)
● calibrate three -phase ac voltage or ac current standard sources (class 0.05 and below)
● calibrate three -phase ac power sources (class 0.1 and below)
● calibrate three -phase electric energy meters (class 0.1 and below)
functions
● electrical parameter measurement: the ac voltage is from 6 v to 792 v, the ac current is from 2 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, and intuitively display by phasor diagram.
● energy metering: standard energy pulse i/o function can be used as a standard for three-phase ac energy metering.
● other function: stability test, trend curve display, data statistics and analysis, etc.
features
● a wide range of ac currents can be measured by connecting each phase 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.
● 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 build automatic detection system with the built-in rs-232 interface.
electrical specifications
ac voltage
measurement characteristics
● range switching: automatic or manual
● measuring range: 6 v to 792 v
● minimum resolution: 10 μv @ 60 v range
● display: 7 digits
ac current
measurement characteristics
● range switching: automatic or manual
● measuring range: 2 ma to 120 a
● minimum resolution: 10 na @ 20 ma range
● display: 7 digits
frequency and phase
power and electric energy
measurement characteristics
● power / electric energy measuring range:
combination of ac voltage range and ac current range.
● power factor measuring range: -1.000 00…0.000 00…1.000 00
● input of standard electric energy pulse:
frequency ≤10 khz, input level from 0 to 3.3 v…24 v.
● output of standard electric energy pulse:
high frequency fs @ 60 khz, low frequency fs @ 6 hz.
general specifications
● line power: 220 v ±22 v, 50 hz ±2 hz
● maximum power consumption: 80 va
● operating environment: 0 °c to +40 °c, 20 % to 85 % r·h, non-condensing
● storage environment: -20 °c to +70 °c, <95 % r·h, non-condensing
● dimensions (w × h × d): 460 mm × 220 mm × 345 mm
● weight: 17 kg
● communication: rs-232 interface
selection guide
