The Kongsberg Power Module TRU HIPAP 350 (Part Number 302504) is a specialized Transformer Rectifier Unit (TRU) designed exclusively for the HiPAP (High Precision Acoustic Positioning) series. This module provides the stable, high-cleanliness electrical power required for underwater acoustic transducers to maintain millimetric accuracy in deep-water positioning and tracking tasks.

 

Product Overview

The TRU 350 is a critical power conversion component within the HiPAP 350 system rack. It converts standard shipboard AC supply into the precise DC voltages needed for the transducer’s internal electronics and signal processing units. Given the sensitive nature of acoustic telemetry, this power module is engineered with advanced filtering to prevent electromagnetic interference (EMI) from degrading the sonar signal.

 

Technical Specifications (Datasheet)

 

Key Technical Features

• High-Stability Output: Maintains voltage regulation within extremely tight tolerances, even during the high-current demands of acoustic “ping” transmissions.
• Low Noise Floor: Features medical-grade isolation and filtering to ensure the power supply does not introduce “ghost” signals into the sensitive acoustic receiver.
• Redundancy Ready: Designed to work in parallel configurations to ensure that the DP (Dynamic Positioning) system remains operational if one power source fails.
• Self-Diagnostic Logic: Includes internal sensors to monitor for over-voltage, over-current, and thermal runaway, providing immediate feedback to the HiPAP operator station.

 

Country of Origin

Country of Origin: Norway

Primary Application Fields

The Kongsberg 302504 power module is found in high-tech maritime operations:

• Dynamic Positioning (DP): Providing the reference power for subsea acoustic beacons used by drilling rigs.
• Subsea Construction: Powering the tracking systems for ROVs (Remotely Operated Vehicles) and AUVs.
• Hydrographic Surveying: Supporting deep-water mapping where signal clarity is paramount.
• Offshore Energy: Ensuring precise positioning for subsea wellhead maintenance and installation.

 

Operating Instructions

1. Module Insertion: Ensure the HiPAP transceiver rack is powered down or in “Standby” before sliding the TRU 350 module into its designated slot. Tighten the front-panel thumb screws to ensure a solid backplane connection.
2. Voltage Selection: Before applying power, verify that the input voltage selector (if equipped) matches the vessel’s auxiliary power supply (115V or 230V).
3. Grounding Verification: Confirm that the rack grounding strap is secure; improper grounding of the TRU can lead to acoustic noise and positioning errors.
4. Airflow Check: Ensure the module’s front ventilation grilles are clear. Blocked airflow can lead to thermal shutdown during prolonged survey operations.
5. Status Monitoring: Upon power-up, observe the “Power OK” LED. If the “Fault” LED illuminates, check the transducer cable for short circuits before replacing the module