ABB 70EB02C‑ES Excitation Control Interface Board

Product Description

70EB02C‑ES is a professional excitation‑control printed circuit board used for ABB HVDC and high‑power converter systems. It processes excitation feedback signals, communicates 

between the main controller and thyristor power units, and executes trigger pulse distribution for high‑voltage converter equipment. With galvanic‑isolated signal circuits and anti‑interference 

hardware layout, this board ensures reliable operation under strong electromagnetic interference environments of power‑transmission stations. It is widely applied in HVDC converter stations, 

large generator excitation cabinets and heavy‑industry power‑control systems.

3. Technical Specifications

• Full Model: 70EB02C‑ES
• Brand: ABB, Origin: Switzerland
• Product Type: Excitation control & trigger‑signal interface PCB
• Application Field: HVDC / high‑power converter control system
• Signal Channels: Multi‑channel isolated analogue and trigger‑pulse output
• Galvanic Isolation: High‑voltage reinforced isolation for power‑side signal separation
• Communication: Internal back‑plane bus communication with main controller
• Working Supply: Board‑level ±15VDC / 24VDC auxiliary power
• Installation: Plug‑in rack‑mounted inside converter control cabinet
• Operating‑Temperature: ‑10℃ ~ +65℃
• Storage‑Temperature: ‑40℃ ~ +85℃
• Ambient Humidity: 5%‑95% non‑condensing

• Certifications: CE, IEC power‑system EMC standard compliance

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4. Key Features

1. High‑reliability excitation‑signal acquisition and trigger pulse distribution for high‑power converters
2. Reinforced galvanic isolation separates low‑voltage control circuits from high‑voltage power circuits
3. Optimized anti‑EMI hardware design adapts to harsh high‑voltage sub‑station environments
4. Stable high‑speed data interaction with system main‑controller and thyristor modules
5. Standard plug‑in card‑structure supports fast replacement and on‑site maintenance
6. Built‑in circuit monitoring for early fault detection and convenient troubleshooting
7. Long‑service‑life industrial‑grade components for continuous 24‑7 power‑station operation
8. Strict factory burn‑in and high‑voltage testing before delivery