10kv 12kv Transformer Test System Capacitance Dissipation Factor
Tester
General information:
SXJS-III is a new generation, fully automatic measure dielectric
loss(tgδ)and the capacitance (Cx) of electric equipment. It's
suitable for testing on transformer, insulating bush, capacitor,
CT/PT, MOA and etc.
Features:
√ High precision, adopts digital waveform analysis and bridge self
calibration technology.
√ The input resistance of whole measurement range is lower than 2Ω,
to eliminate auxiliary capacitance influence of measured cable.
√ Frequency conversion anti interference, measuring accurately even
under 200% interference, test data is stable and suitable for
onsite interference dielectric loss measurement.
√ Auto identify 50Hz/60Hz system power source, and support electric
generator. Normal measuring even the frequency has high
fluctuation.
√ 255 groups data storage.
√ 1.2.3 multi-level safety protection.
√ Build-in series and paralleled connections two dielectric
measuring modes.
√ HV protection: Fast cut down when test object under short
circuit, break down or HV current fluctuation.
√ LV protection: Auto starts protection to avoid over voltage when
miss connected 380V, power fluctuation or power failure.
√ Grounding protection: When the tester is not to the ground or
poor ground, the procedure will not going on, no HV output. Over
current protection, to protect device against damage when test
object is at short circuit or breakdown.
√ CVT: HV voltage/current, LV voltage/current 4 protection limited
value, to protect the equipment. The exciting voltage will not be
outputted if miss operating. No 10kV HV output under CVT measuring.
√ Anti miss operation: two degrees power switch. Voltage and
current are real-time monitoring. Repeating press button to
confirm. Connection terminals are divided as HV and Lv. Voltage
boosting smoothly, and decreasing fast. With sound light alarm.
√ Robust and anti-shake during long transportation.
√ HV cable: Insulated hipot cable.
√ Anti "Capacity lifting": When to test large capacity test object,
the voltage will be enlarged. The tester can trace the output
voltage automatically, to ensure the constant of test voltage.
√ Multi working modes can realize all kinds of dielectric loss
testing: Positive/ Negative connection, internal/external standard
capacitance, internal/external HV. No need to connect any outside
auxiliary equipment.
√ Large LCD screen with backlight, English menu easy to operate.
Auto identifies the types (capacitance, inductance or resistance
type) of test object.
√ Build-in printer.
√ Standard capacitor port, equipped with oil cup and special test
leads, SXJS-III can realize the insulated oil dielectric loss
measurement. The insulated material dielectric loss measurement
also can be realized if outside connected with measuring polarity.
To realize HV dielectric loss testing if outside connected with
standard capacitor.
√ Negative connection LV shield function: when 220kV CVT bus bar to
the ground, C11 can do the 10kV negative connected dielectric
measurement without remove the wires.
√ Auto identify outside connected HV test power source frequency
40Hz~70Hz, support power frequency source, variable frequency
source and series resonant power source to proceed large capacity
HV dielectric loss test.
√ CVT test function, can realize CVT self-excitation test. Only one
test, the capacitance and dielectric loss of C1, C2 can be measured
all.
√ RS232 PC port, to realize measuring, data processing and test
report exporting, including software updating. And can be compacted
into HV test vehicle.
Specifications:
| Accuracy: | Cx: | ±(read ×1%+1pF) |
| tgδ: | ±(read ×1%+0.00040) |
| Anti interference: | Frequency conversion anti interference, under 200% interference,
still can reach above accuracy. |
| Capacitance range: | Internal HV: | 3pF~60000pF/10kV/12kV
60pF~1μF/0.5kV |
| External HV: | 3pF~1.5μF/10kV/12kV
60pF~30μF/0.5kV |
| Resolution: | Max. 0.001pF,
4 significant figures |
| Tgδ range: | unlimited,resolution: 0.001%,capacitance, inductance, resistance
can be identified automatically. |
| Test current range: | 10μA~5A |
| Inner HV: | Setting voltage range: | 0.5~10kV/12kV |
| Max. output current: | 200mA |
| Increase/decrease voltage: | Continuous slide regulating |
| Voltage precision: | ± (1.5%×reading+10V) |
| Voltage resolution: | 1V |
| Test frequency: | 45, 50, 55, 60, 65Hz single frequency |
| 45/55Hz, 55/65Hz, 47.5/52.5Hz auto double frequency conversion |
| Frequency precision: | ±0.01Hz |
| Outside HV: | UST Positive connection max. test current 1A,Power frequency or
frequency conversion 40-70Hz |
| GST Negative connection max. test current: 10kV/1A,power frequency
or frequency conversion 40-70Hz |
| CVT self excitation LV output: | Output voltage 3~50V,output current 3~30A |
| Measuring duty: | about 40s, it depend on measuring methods |
| Input power supply: | 180V~270VAC,50Hz/60Hz±1%,
local supply or by generator. |
| Build-in thermal printer |
| Environmental Temperature: | -10ºC~50ºC |
| Relative humidity: | <90% |
Warranty: One year quality guarantee after shipment.
Please kindly contact with us for further information.
