Croxs Instrument

About Us
About Us
Located in Changsha National Hi-tech Industrial Development Zone, Croxs Instruments Co., Ltd. is a high-tech enterprise specializing in R &D, Production, Sales and Technical Service of power system related electrical testing instruments. The company focuses on the development of smart grid digital protection relay test equipment, digital substation IED(intelligent electric device) debugging, testing and maintenance equipment and other instruments.
What We Do
Provding Professional Secondary Protection Relay Test Set, Optical Digital Testing, Analyzing Kit and Solution for Power System, Smart Grid
Our Equipment
Our Equipment 6-Phase, 3-Phase Secondary Protection Relay Test Set, support both conventional analog relay and digital relay testing based on IEC61850
Our Testing Solution
Our Testing Solution Various kinds of Digital Subustation Commissiong Testing Device for IEC81850 IEDs
View Recent News and Project Case Study
220KV Dashiqiao digital substation testing was successfully concluded by Croxs
On August 29,2021, IEC61850 digital substation protection relay testing kit was used in 220KV Dashiqiao substation in yingkou City, Liaoning Province for helping the end user finalize the commissioning test work. The intelligent point-to-point work includes using digital relay test equipment for scanning remote motion database, SCD file import and calibration, using digital substation protection relay test kit and ground harmonic set control for intelligent point control.
220KV Wubao digital substation was successfully concluded by Croxs Instrument
On August 29,2021, the remote moving counterpoint simulation device of the IEC61850 digital substation was used in the comprehensive upgrade project of Wubao digital substation in 220KV, Dalian, Liaoning Province, which took two days to complete.
CROXS has successfully provided protection relay testing skill improvement training for the staff of IEC61850 digital substation of Power Grid Jiangsu
CROXS has successfully provided protection relay testing skill improvement training for the staff of IEC61850 digital substation of Power Grid Jiangsu Electric Power Maintenance Company
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