SE-6000 Fiber-Optic Isolation Systems in UHV Measurement

1. Introduction

the large-scale construction of China's ultra-high voltage power grid, which places strict requirements on measurement safety and data accuracy during testing and operation and maintenance of high-voltage equipment. Traditional electrical measurement schemes are difficult to adapt to ultra-high voltage scenarios due to high insulation risks and weak anti-interference capability. Iwasaki SE-6000 optical isolation system (composed of SE-6011 isolation device and SE-6000 isolation amplifier) combines a high-voltage probe at the front end and an oscilloscope at the rear end, centered on optoelectronic isolation technology, becoming an efficient solution for ultra-high voltage measurement fields

2. Core pain points in ultra-high voltage measurement

There are three major measurement challenges in ultra-high voltage scenarios:

1. high safety insulation risk: High voltage during floating measurement can easily enter the testing equipment, causing safety accidents;

2. electromagnetic interference is severe: Waveform distortion caused by common-mode interference in strong electromagnetic environments;

3. Scene adaptation is limited: Traditional cables have short transmission distances and cannot meet the needs of large-scale and remote testing

3. SE-6000 system's technical architecture and core advantages

1. system architecture

● Frontend SE-6011 isolation device: Supports BNC Interface External High-Voltage Probes (expandable to 100kV AC peak), enabling signal acquisition and electro-optical conversion, with independent power supply from lithium batteries;

● Fiber Transmission Link: Used LC fiber optic connector, supports up to 200 -meter transmission, achieving complete electrical isolation;"-meter transmission;

● backend SE-6000 isolation amplifier:4 channel design,14 100MS/s sampling rate, restores the optical signal to a standard electrical signal for output to the oscilloscope.

2. core technical advantage

● photoelectric complete isolation: Cut off the electrical connection between the high-voltage circuit and the testing instrument, completely eliminating the risk of high-voltage crosstalk;

● Superior anti-interference capability: Excellent common-mode suppression performance, can filter high-frequency clutter in strong electromagnetic environments, and restore true waveforms;

● wide range adaptation: The front end can be paired with various high-voltage probes for combination 30MHz bandwidth, multi-level input range (maximum40V Full scale,DSO mode lowest 40mV), meeting UHV transient and steady-state measurement needs;

● flexible deployment capability:SE-6011 longest battery life 24 hours, suitable for outdoor scenarios without power supply, fiber optic transmission supports remote device measurement

4. Typical Application Scenarios

1. ultra-high voltage equipment type test: Lightning surge and operation overvoltage testing of transformers and switchgear, accurately capturing transient waveforms;

2. Live Detection and Operation & Maintenance: Floating live measurement of UHV substation equipment, harmonic and transient fluctuation monitoring can be completed without power outage;

3. fault traceability and research: Complete recording of instantaneous fault voltage data, providing a basis for grid fault analysis and protection optimization

V. Conclusion

The SE-6000 optical isolation system uses modular architecture and optoelectronic isolation technology to address safety, anti-interference, and scenario adaptation challenges in UHV measurement. Its front-end probe expansion capability, long-distance fiber optic transmission, and high-fidelity data restoration capabilities provide safe and reliable measurement support for UHV testing, operation and maintenance, and scientific research, making it the preferred solution in the field of UHV electrical measurement