Basic characteristics of the powersupply system of rail transit

• Subway power supply protection level is oneload during GB50157-2003regulations should bedualpower supply double circuit to power supply
• The load grade of the subway powersupply system is A or B level during GB501574-2008regulations, withHigh requirements for safetyand reliability
• Big change of power supply voltage range,Locomotive operation causelarge fluctuation of power grid voltage, meanwhile cause alot of high frequency interference in the power grid
• Each power supply for professionalelectric equipment Input and output withisolation transformer
• Each professional load ,most of them are single phase and single powerinput equipment 
• MostMetrodistribution room area are small, with high humidity in the machine room,withoutdedustingequipment

Typical block diagram of metro powersupply system

The products of ECRIEEPOWER that aimed at rail transit

PDU: ATS cabinets and distributioncabinets in the machine room

PDS:  AC screen, DC screen,KVM

Power frequency isolating transformer: 2KVA/3KVA/5KVA/30KVA/50KVA100KVA/120KVA/200KVA

BWM Series modularspecial UPS for rail transit

BWC/BWE Series tower model UPS, used for : signal,communication, BAS、ISCS、

Partial AC power supply system, such asOA

BWDC Series DCUPS, Special for some systems, such as Shielding door(110V DC)

Powercentralized monitoring and alarm system: Monitoring the working state ofPDU/PDS/UPS

Precision air conditioning for machineroom

BWJ Series rail transit lead acid battery

Centralizedpower supply AC power supply system

Signalling system

communication system

Screen Door System-DC Power Supply Scheme

Screen Door System-AC Power Supply Scheme