AC and DC Panel upgrade

Because the orginal NARIs equipment is no longer produced. The AC and DC panel can not work normall

Passenger Information Audio power supply reform

·On the premise of ensuring the performances of the power supply meets or exceeds the originaldesig

PRC Contactor reform

Reform PRC contactor for GZ Metro APM Line The Contactor SS CA6-180 ,which is used by APM Line curr

Double power supply automatic 2 time control,Integrated relay protection upgrade

Upgrade 10KV SF6 Double power supply automatic 2 time control and Integrated relay protection for N

PLC Upgrade and reform

·Upgrade AC DC panel s AC switching PLC for GZ Metro Line 3. We obtain the the original communicati

Moeller Breaker Protection Module upgrade on GZ Metro Line 8

Upgrade Moeller Breaker protection module on GZ Metro Line 8. · Maintain the original connection wi

Adding Grounding test column for GZ Metro Line 3

There is a large amount of maintenance in the Low voltage cabinet. The original equipment has not f

110KV GIS Switch Cabinet Density Relay Upgrade

As the original Density relay on GZMTR Line 1 is no-longer produced and the installation way and sh

Rectifier cabinet control unit Upgrade and Rebuild

Upgrade to Siemens PLC control with higher stability. Ensure the communication protocol matching th