1、Outline
SDPT-H high school low voltage transformer tester is my company in the field in order to reduce electromagnetic voltage transformer test workload situations designed to field test equipment. The instrument has a low voltage situation check out the actual error voltage transformer in high voltage conditions. Can cover 6kV / 100V, 6kV / √3 / 100V / √3, 10kV / 100V, 10kV / √3 / 100V / √3, 35kV / 100V, 35kV / √3 / 100V / √3, 110kV / 100V, 110kV / √3 / 100V / √3,220kV / 100V and 220kV / √3 / 100V / √3 variable ratio power measurement of electromagnetic voltage transformer. Equipment designed to introduce some new ideas, some new technologies have taken. Down as: generic platform technology, simulation load voltage, internal voltage transformer with high accuracy and self-boosting power supplies. Allowing users to feel more convenient, fast and efficient in the use of the instrument.
2、Product performance standards
JJG313-94 "measuring current transformer test procedures"
JJG314-94 "measuring voltage transformer test procedures"
JJG1021-2007 "measuring transformer test procedures"
JJG169-93 "transformer calibrator test procedures"
DL / T668-1999 "measuring transformer testing device"
3、Features
（1）Inside the instrument has since boosted standard voltage transformer ratio is varied, accuracy classes to 0.02, it can accurately test the power voltage transformer errors at a voltage of 1200V and 2400V.
（2）The instrument uses artificial load technology when measuring electromagnetic voltage transformer, the technology can calculate the voltage transformer load error at rated load and lower load conditions, thus without using voltage load box during electromagnetic voltage transformer calibration .
（3）Inside the instrument transformer calibrator part accuracy rating of 2.
（4）The instrument has a point of order point automatic sampling features to make the user during the measuring procedure is very convenient.
（5）The instrument has an internal power source output, automatic boost, superior protection.
（6）The instrument used our newly developed common platform technology, the common platform the user can very easy access to some useful information such as: the previous measurement data, various measuring objects such as wiring diagrams. Points directly measured values, the entire value of the error curve. Measurement results are automatically judged. The intelligence of the instrument has been further improved.
（7）The instrument can measure temperature and humidity, allowing users to keep abreast of on-site work environment. The new S-class measurement capabilities increase, to measure site 0.2S, 0.5S current transformer; a measurement process, can simultaneously test the upper limit of the standard error of the current transformer under load and lower load; increasing the PC software online.
（8）Instruments used platform interface technology, large-screen LCD display, full Chinese prompts automatic measurement, the entire instrument is simple; equipment is small, easy to carry, only a few people can quickly complete measurements.
4、Main technical indicators:
Ambient temperature: temperature: (5 ~ 40) ° C
Relative humidity: <80% (25 ° C)
Altitude: <2500m
Power frequency: 50Hz 、60Hz ± 0.5Hz
Comprehensive instrument error: 0.05%
The measured voltage transformer accuracy level range: 0.2,0.5,1
The measured voltage transformer types: electromagnetic voltage transformer
Internal standard voltage transformer parts:
Ratio range：6kV/100V、6kV/100V/√3V
10kV/100V、
10kV/√3/100V/√3V 35kV/100V、
35kV/√3/100V/√3V 110kV/100V、
110kV/√3/100V/√3V 220kV/100V、
110kV/√3/100V/√3V
Accuracy: 0.03%
Operating voltage: 0V ~ 2400V
Output capacity: 50VA
Internal transformer calibrator section:
Measuring range: in-phase component (%): 0.0001 ~ 200.0 Resolution: 0.0001
Quadrature component (min): 0.001 ~ 999.0 Resolution: 0.001
Admittance (ms): 0.001 ~ 60.0 Resolution: 0.001
The basic error: the in-phase component: △ X = ± (X × 2% + Y × 2% ± 2 words)
Quadrature component: △ Y = ± (X × 2% + Y × 2% ± 5 words)
"X", "Y" - the instrument displays the value "two words", "five words" - instrument of quantization error
Dial indicator: Level 1 Scope of work:
Voltage: 5% -149% Un (Un = 100V, 150V, 100 / √3V)
Workload: Voltage: a for x <0.25VA (100V)