Technical Specifications

• Product Model: 3BHB024944R0001
• Brand: ABB
• Warranty: One Year
• Power Supply: 24 V DC logic supply 18‑30 V DC; internal auxiliary power for signal conditioning
• Operating Temperature: ‑20 °C ~ +70 °C; 5‑95 %RH non‑condensing; conformal‑coated PCB for power‑plant cabinet
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Analog sampling loop ≤ 1 ms; synchronized to 50/60 Hz grid frequency
• Protection Class: IP20 rack‑mount plug‑in PCB; non‑hot‑swap, rack power must be de‑energized before removal
• Measurement Channels: 3‑phase generator voltage, 3‑phase generator current, field voltage & field current acquisition; analog isolation for each channel
• Accuracy Class: Voltage / current measuring accuracy ±0.2 % FS
• Communication Interface: Rack backplane connector; isolated analog input terminals for PT/CT signals; field‑circuit feedback inputs; multi‑color diagnostic LED indicators; hardware configuration jumpers
• Supported System: ABB UNITROL static excitation system; feeds sampled voltage/current data to main AVR controller board; interfaces with 3BHB024945R0001 gate‑drive board
• Overload Capacity: Galvanic isolation for PT/CT inputs; over‑voltage, surge & ESD protection; input over‑range detection; channel‑wise fault diagnosis
• Dimensions: 260 mm × 210 mm × 30 mm; weight approx. 1.82 kg
• 

Product Overview

Important notes:

1. Cannot operate standalone; must work together with UNITROL main‑controller and 3BHB024945R0001 gate‑pulse board.
2. 3BHB024944R0001 = measurement board; 3BHB024945R0001 = SCR gate‑drive board, they are paired partners inside same excitation rack.