For service of product purchase and technical maintenance, please call 4008828058
Frequency Conversion Power Supply: Frequency: 0.4-50HZ
Voltage: 0-80V
Power: 500W<
Volt-ampere characteristics: output voltage: 0-80V
Output Current: 2A (1A Current Transformer)
4A(5A Current Transformer)
2A (Voltage Transformer)
Measurement accuracy: <0.5%
Variable ratio range: CT: 5A/5A-25000A/5A (5A/1A-5000A/1A) +0.2%
PT: Full range measurement (electromagnetic type) + 0.2%
Error measurement range: 5A/5A~25000A/5A (5A/1A~5000A/1A)
Limit error: +0.05%; see table below:
measurement error
Rated current
Ratio difference (+%)
Angular difference (+')
1%
Zero point one five
Ten
5%
Zero point one zero
Six
20%
Zero point zero eight
Four
100%
Zero Point Zero Five
Two
120%
Zero Point Zero Five
Two
200%
Zero Point Zero Five
Two
See Appendix for details.
Stability
Zero point zero three
Two
See Appendix for details.
Note: For low voltage through-core current transformer, the limit error is 1/4 of the corresponding error limit.
DC resistance: 0.0-0.1_+3%
0.1-50_+1%
Secondary CT load: 0.1_-25_+2%
PT secondary load: 10VA-400VA +2%
Protection level error: ratio difference: +0.1%
Angular difference: +5'
Verification: Voltage range: 0-100V (percentile error 0.5%)
Ratio difference: 0.001% - 3% (100V)
Angular difference: 0.00'-50'(100V)
Error: DX= (+1%*X+1%*Y+2 words)
DY= (+1%*X+1%*Y+2 words)
Admittance: 0.1 mS-99.9 mS
Error: DX= (+1%*X+1%*Y+2 words)
DY= (+1%*X+1%*Y+2 words)
Working power supply: AC 220V + 10%/50Hz + 2%
Ambient temperature: 0-40 C
Ambient humidity: 25 C < 85%
Note: product appearance is subject to actual product, technical parameters and models are subject to change without prior notice. For more information on the list of products of huaneng products. National service hotline 4008828058(1) Current transformers for metrology
1. The program error (angle difference, ratio difference) between the national standard current transformer and non-standard current transformer is 1%-120%(S level).
2. Measuring and displaying the regulation errors (angular difference and ratio difference) of current transformer under the upper and lower limit loads by the national standard at one time.
3. Procedure errors (angular difference, ratio difference) of two groups of current transformers under actual arbitrary loads are measured and displayed at one time.
4. Detecting the ratio of known current transformers and measuring the ratio of non-known current transformers.
5. The instrument can be inspected in accordance with JJG169-1993 Verification Regulations for Transformers.
(2) Current transformers for protection
1. Automatic control of CT measurement process, automatic recording of data, automatic description of volt-ampere curve.
1) Automatic setting of protection current and voltage, automatic adjusting step.
2) Using frequency conversion power supply test, the test voltage range is wide (10000V).
3) Give the reference inflection point automatically (voltage, current)
2. 10% and 5% error curves are automatically drawn.
3. Detecting the ratio of known current transformers and measuring the ratio of non-known current transformers.
4. Measure 100% difference and angle difference of current transformer protection winding for protection.
(3) Protective Voltage Transformers
1. PT measurement process is fully automatic control, automatic recording of data, automatic drawing of volt-ampere curve.
2. Detecting the ratio of known voltage transformers and measuring the ratio of non-known voltage transformers.
Measure the load parameters of secondary circuit of current and voltage transformer.
320 * 240 large screen LCD display, full Chinese interface. Wiring, simple operation.
It can store and print all kinds of measurement data, which is convenient for users to inquire.
