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td4800 calibrator for electronic instrument transformers

专用于检测电子式互感器,不仅可对比差及交差进行测量,还可对稳定性等进行全面评价


内置精密标准源,不需要外附调压器、升流器

实时显示被测量电量波形、频率、幅度及相位等

可进行多次谐波分析及对电子式互感器的各次谐波精度进行校验


overview

model td4800, an apparatus for calibrating electronic instrument transformers. this apparatus is composed of ac voltage and ac current standard source as well as a small signal measurement from 0 to 6.25 v.

applied to calibrate the electronic instrument transformers with analog output or data transmission which of meeting iec 61850, and measure ratio difference and angle difference to make a comprehensive evaluation for the electronic instrument transformers.

reference standard

● iec 61869-11:2017 instrument transformers. part 11: additional requirements for low power passive voltage transformers

● gb/t 20840.7-2007 instrument transformers. part 7: electronic voltage transformers

● gb/t 20840.8-2007 instrument transformers. part 8: electronic current transformers

● jjg 313-2010 instrument current transformers

● jjg 314-2010 instrument voltage transformers

● jjg 1021-2007 instrument transformers in power system

● dl/t 668-1999 instrument transformer testing equipment for measuring service

features

● there are built-in ac voltage and ac current standard sources with high precision, no need for external voltage regulators and current risers.

● display the waveform, frequency, amplitude and phase of the measured parameters in real time.

● count and analyze the average, maximum variation, extreme and square deviation of ratio difference and angle difference.

● multiple harmonic analysis and accuracy calibration of each order harmonic for the electronic instrument transformers.

● dual sc fiber ethernet interface and rj45 ethernet interface.

electrical specifications

ac voltage and current output

11

output characteristics

● output range of voltage: 6 v to 120 v, the load power is more than 12 va.

● output range of current: 0.1 a to 6 a, the load power is more than 20 va.

● resolution: 0.001 % of range

frequency, phase and harmonic

12

ac measurement

● range: 100 mv, 200 mv, 500 mv, 1 v, 2 v, 5 v.

 measuring range: 0.1 v to 6.25 v

● accuracy of ratio difference: ± (0.03 % of read + 0.02 % of range)

● accuracy of angle difference: ±2 ′

clock synchronization

● supported mode: code irig-b of fiber or rj45 ethernet interface, pps io mode of fiber or electrical level and clock output mode of abnormal timing.

● error measurement: synchronization or out of synchronization

● clock accuracy in 1 year: ±1 ppm

general specifications

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

● operating environment: 0 °c to +40 °c, 20 % to 85 % r·h, non-condensing

● storage environment: -20 °c to +70 °c, <85 % r·h, non-condensing

● communication: rs-232 interface


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