Uong Bi Thermal Power Plant — 300 MW · AC/DC After-Sales Service
11 years serving Uong Bi Thermal Power Company — contributing to its success to this day.
After-sales reference for the AC UPS, DC and battery installed base of the Uong Bi 300 MW unit, operated by Uong Bi Thermal Power Company (EVNGENCO1).
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From factory to after-sales support.
One installed base, followed through its life — who did what, and when.
Chloride dual inverter EXOND APODYS, EXCEL APODYS 220 VDC chargers and the 220 kV substation dual charger.
OEM · CHLORIDE300 MW unit in operation with its Chloride AC UPS and 220 VDC systems (end-user letter: in operation since 2005).
PLANTEDPN site survey of the battery rooms, chargers and UPS.
EDPNService for the dual UPS, chargers, 220 VDC battery and 220 kV substation Ni-Cd batteries.
EDPNSurvey and capacity testing after cracked cell containers on the 220 VDC battery.
EDPNNew Alcad bank with installation, capacity testing and commissioning; overhaul of the 220 kV substation AC/DC supply.
EDPNAfter-sales service for the 300 MW unit installed base.
EDPNAfter-sales service for the AC UPS, 220 VDC and battery systems of the 300 MW unit and the plant 220 kV substation DC system.
Preventive maintenance, repair, spare parts and troubleshooting for the Chloride dual 230 VAC inverters and 220 VDC station chargers, capacity testing of the 220 VDC OPzV station battery, and service for the 220 kV substation DC system — dual charger and vented Ni-Cd battery.
What the site needed.
A 300 MW coal-fired unit depends on its AC UPS, 220 VDC systems and batteries for control and protection. The installed equipment needs manufacturer-level maintenance, repair, spare parts and verified battery capacity over its operating life.
What EDPN delivered.
EDPN provides after-sales service for the Chloride installed base of the 300 MW unit — preventive maintenance, repair, spare parts and troubleshooting for the dual 230 VAC inverters and the 220 VDC station chargers. EDPN carried out capacity testing of the 220 VDC OPzV station battery and services the plant 220 kV substation DC system — 220 VDC dual charger and vented Ni-Cd battery — including supply of a new Alcad Ni-Cd battery in 2020.
Project history.
EDPN site survey of the battery rooms, chargers and UPS (December 2012).
Dual UPS, chargers, 220 VDC station battery (four banks) and two Ni-Cd batteries for the 220 kV substation.
After cracked cell containers on the 220 VDC Hoppecke OPzV battery, EDPN surveyed the battery and carried out capacity testing (2014).
220 kV substation: new Alcad vented Ni-Cd bank supplied by tender, with replacement, installation, battery capacity testing and commissioning.
Overhaul of the AC/DC power supply equipment of the 220 kV substation.
After-sales service for the 300 MW unit installed base.
What followed.
After-sales support for the AC and DC installed base of the Uong Bi 300 MW unit and the plant 220 kV substation since 2013.
From the field.
Battery rooms and DC systems before the first EDPN service.
EDPN site photos, December 2012.




Cracked cell containers on the 220 VDC battery.
EDPN site photos, April 2014 — survey followed by capacity testing.




Tell us about the application.
For a new project, send the specification or load requirement. For service support, send the site, model, serial number, alarm or condition, and available maintenance history.
