td3550 verification apparatus of single-凯发k8国际

overview

td3550 is a set of apparatus specially applied to the verification of single-phase meters and designed to meet oiml r46 instructions. it is composed of standard ac power source, reference meter, multi-station verification workbench (built-in meter hanger, terminal knob, pulse input and output module, control module, display module, communication interface, anti-static table, etc) , computer, proprietary software and so on. the accuracy is 0.01/0.02/0.05/0.1 optional. it has a fundamental frequency output of up to 2 khz, a wide current dynamic output range of 0.1 ma to 120 a and a waveform generator of square wave, spike wave, dc even harmonic (half wave), sub-harmonic and odd harmonic. users can also customize various waveforms to meet the needs of measuring and calibrating various harmonic power and electrical energy.

the apparatus is based on the stable output of ac power source. standard reference meter independently developed by tianheng is adopted as the accuracy assurance. combined with proprietary software, it can simultaneously have verification on 6-24 single phase meters with the same voltage and current range, different constant and different error limit. the items include basic error test, start-up test, latent test, meter constant, daily timing error, time interval switching and so on.

features

● the minimum ac current output to 0.1 ma, which is the basis for start-up test of the verified meter.

● output fundamental wave of voltage/current: 45 hz~2 khz, harmonic order: 2^nd to 64^th @ (45 hz to 65 hz).

● the apparatus has positive and reverse active electrical energy, four quadrant reactive power and other metering methods.

● multi-station verification workbench: the verification workbench is equipped with ac voltage / current output terminals, photoelectric pulse and communication interface to meet  various kinds of testing requirements. and the control panel is built in so the operator can observe and control the output value by its lcd touch screen, which facilitates manual verification.

● proprietary software：semi-automatic and full-automatic verification is realized, so as data management and certificate export. 

technical specifications

ac voltage/current output

output characteristics：

● range of voltage: 0 v～264v, burden capacity：15 va for each station

● range of current: 0.1 ma～120 a, burden capacity：25 va for each station

● resolution: 0.002%*rg

● display: 6 digits

● protection: short-circuit protection, open-circuit protection, overload protection 

frequency, phase and harmonic

● range of frequency: 45.000 hz～65.000 hz

   resolution: 0.001 hz

   accuracy: ± 0.01 hz

● range of phase: 0.000°～359.999°

   resolution: 0.005°

   accuracy: ± 0.05°

● output of complex waveforms: square wave, sharp tip wave, dc / even harmonics, subharmonics and odd harmonics can be generated. users can also customize harmonics of various amplitude and phase. 

stability of output power

accuracy of reference meter

measurement characteristics：

● ac power range: combination of ac voltage range and current range

● output of standard electrical energy pulse (high frequency): full scale value corresponds to 60 khz.

   output of standard electrical energy pulse(low frequency): full scale value corresponds to 6 hz.

   frequency jitter of output pulse: < 10 μs

● input of standard electrical energy pulse: high frequency pulse less than or equal to 150khz with the amplitude of 3.3v~24v can be received.

● the electrical energy error is automatically displayed with the resolution of 0.0001%. 

general specifications

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

● operating environment: 0 ℃～40 ℃，20%～80% r·h，non-condensing

● storage environment: -20 ℃～70 ℃，< 80% r·h，non-condensing

● dimensions（width*depth*height）: 2600 mm × 700 mm × 1500 mm (12 stations workbench )

● weight: 200 kg

● standard interface: rs232 

selection guidance