Electrical Power Supply System

Mobile substation
Transformer
Mobile power generator truck
Cable coupler

Mobile substation & switch cabinet - primary equipments of mobile power supply & distribution system are specially designed and manufactured for supplying power for large mobile equipments like electrical shovel, drilling machine and pump in large open pit mines.
Mobile substation can be divided into two basic types: steel skid type and trailer type. Standard mobile substation composed of three parts: high voltage input, transformer, low voltage output.

Features of Mobile Substation

Skid or trailer mounted, convenient for transportation and movement
Modular structure, easy for disassembly, movement and assembly on site
Safe, reliable and multi-lock out operation mechanism ensures personal and equipments safety
Most advanced micro-computer protection module and digital display gauge, fault auto-logging and audio & visual alarm are equipped in the system
Suitable for rough terrain conditions
Capacity : 5MVA—25MVA

Picture	Item	Rated Value	Standard（specifications）
	1.1kV Cable Coupler	Rated Current : 160A、 240A or 320A Rated AC Voltage : 1100V	CAN/CSA-M421-93 CAN/CSA-C22.2 NO.30-M1984 CAN/CSA-C22.2 NO.159-M1982 CAN/CSA-C22.2 NO.182.1-M1988
	8kV Cable Coupler	Rated Current : 250A or 400A Rated AC Voltage : 8000V	Passed IEEE 48-1990 Standard Test Designed to comply with CSA standard
	15kV Cable Coupler	Rated Current : 440A Rated AC Voltage : 15000V	Designed to comply with CAN/CSA M421 standard Passed IEEE 386-1995 standard test
	25kV cable coupler	Rated Current : 600A Rated AC Voltage : 25000V	Designed to comply with CAN/CSA M421 standard Passed IEEE 386-1995 standard test (can be used on power distribution)
Safety features of cable coupler	1. Good inter-phase shield protection 2. Insulation material is durable which will not rupture or cause ground fault 3. Using high conductivity copper alloy material. All lock bolts have similar conductivity 4. All couplers are equipped with full set of sealing device
Advantage of cable coupler	1. Suitable for using in harsh mining environment 2. Reduce cost caused by power supply failure 3. Durability, safety and reliability