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td1580 integrated detection apparatus of meters for dc electrical energy 适用于对直接接入式或间接接入式的直流电能表进行检定，或完成型式评价的大部分试验
电压 / 电流的输出准确度为 0.02 级 / 0.01 级可选
功率 / 电能的准确度为 0.02 级 / 0.05 级可选
overview
td1580 is an integrated apparatus applied to the verification and pattern evaluation of static meters for dc electrical energy. the accuracy of voltage/current energy is 0.01/0.02 optional, and electrical energy/power is 0.02/0.05. it is suitable for the verification, calibration and pattern evaluation of direct or indirect connected meters.
reference standards are gb/t 33708-2017 static meter for direct current energy and jjg 842-2017 verification regulation of electronic meters for measuring direct current electrical energy which tianheng participated in drafting .it is suitable for metrology institute, electric power department, manufacturers and users as the standard of dc power and electrical energy.
applications ( class 0.02 )
● verification or calibration of direct connected meters of class 0.1 and below，and a majority of pattern evaluation
● verification or calibration of indirect connected meters of class 0.1 and below，and a majority of pattern evaluation
features
● dc voltage output is 10 mv～1150 v，dc current output is 5 μa～120 a, which is suitable for the verification of direct connected meters, indirect connected meters.
● the verification of high voltage and large current is supported, and the small voltage and current output capacity is suitable for the start-up and latent test.
● dc small signal voltage output: 10 μv～4.4v，applied to the verification of indirect connected meters(type of voltage).
● auxiliary power supply: it can provide dc 24 v or ac 220 v power supply for electrical meters (type a).
● the voltage variation time of the power supply can be set arbitrarily within 20 ms~1 min to complete the voltage sag and short-term interruption test. (reference 5.3, 5.4)
● dc voltage source is a bipolar output, dc large voltage source, current source and small signal voltage source can be superimposed on ac components, of which frequency band is 40 hz ~ 1000 hz, amplitude and phase can be adjusted to carry out dc ripple effect test.
● the workbench is equipped with 3 stations to support simultaneous verification of 3 meters.
● proprietary software: semi-automatic and full-automatic verification is realized, so as data management and certificate export.
technical specifications
basic error test
dc voltage output
output characteristics：
● output range: ± ( 10 mv～1150 v )
● resolution: 0.001%*rg
● display: 7 digits
● protection: short-circuit protection, overload protection
dc current output
output characteristics：
● output range: ± ( 5 µa～120 a )
● resolution: 0.001%*rg
● display: 7 digits
● protection: open-circuit protection, overload protection
dc small signal voltage output
output characteristics：
● output range: ± ( 10 μv～4.4 v )
● resolution: 0.001%*rg
● display: 6 digits
● protection: short-circuit protection, overload protection
● the shunt specifications and current-voltage ratio can be set, so the output value can be displayed as the voltage or current converted by the shunt.
dc electrical energy / power
● accuracy (apparatus of class 0.05): ± 0.05%*rd
accuracy (apparatus of class 0.02): ± 0.02%*rd
● 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 5 v can be received.
● the electrical energy error is automatically displayed with the resolution of 0.0001%.
dc ripple effect test
ripple on standard dc voltage source
output characteristics：
● output range: ( 10～110% )*rg ；0.2 vrms～220 vrms
● output range: 0.001%*rg
● display: 7 digits
● frequency and wave: 40 hz～1000 hz，sine wave
● accuracy of electrical energy/ power: ± 0.05%(class 0.02）；± 0.1%(class 0.05）
● protection: short-circuit protection, overload protection
ripple on standard dc current source
output characteristics：
● output range: ( 10～120% )*rg ；0.2 marms～12 arms
● resolution: 0.001%*rg，
● display: 7 digits
● frequency and wave: 40 hz～1000 hz，sine wave
● phase between voltage: adjustable within 0.00º～359.99º
● accuracy of electrical energy/ power: ± 0.05%(class 0.02）；± 0.1%(class 0.05）
● protection: open-circuit protection, overload protection
ripple on dc small signal voltage
output characteristics：
● output range: ( 10～120% )*rg ；0.5 mvrms～2.4 vrms
● resolution: 0.001%*rg，
● display: 7 digits
● frequency and wave: 40 hz～1000 hz，sine wave
● phase between voltage: adjustable within 0.00º～359.99º
● accuracy of electrical energy/ power: ± 0.05%(class 0.02）；± 0.1%(class 0.05）
● protection: overload protection
ripple on dc electrical energy
● voltage ripple factor: 0%～20.00%
● current ripple factor: 0%～20.00%
● absolute value of power factor: 0.5~1
● error limits of electrical energy variation caused by dc ripple: ± 0.05%(class 0.02）；± 0.1%(class 0.05）
auxiliary power supply of verified meter
● the rated output voltage of dc power source is 24v and the range is 6v~32v, the maximum load current is 300ma for each station, and the accuracy of power consumption is higher than ±0.1va.
● the rated output voltage of ac power source is 220v and the range is 110v~286v, the maximum load current is 30ma for each station, and the accuracy of apparent power is higher than ±0.2va, active power is higher than ±0.2w.
● each station has the capacity of independent power consumption measurement.
voltage sag and short-time interruption test of ac power supply
ac power supply δu =100%,voltage interruption for 1s
ac power supply δu =100%, voltage interruption for 20ms
ac power supply δu =50%，voltage sag for 1 min
voltage sag and short-time interruption test of dc power supply
dc power supply δu =100%,voltage interruption for 1s
dc power supply δu =100%, voltage interruption for 0.3s
dc power supply δu =60%, voltage sag for 1s
general specifications
● line power: ac ( 220 ± 22 ) v，( 50 ± 2 ) hz
● operating environment: 15 ℃～30 ℃，40%～75% r·h，non-condensing
● storage environment: -20 ℃～70 ℃，< 95% r·h，non-condensing
● dimensions（width*depth*height）: 2400 mm × 800 mm × 1100 mm (3 stations workbench )
● standard interface: rs232
selection guidance
