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H869 - HV power distribution system - ZS1 Unigear

The goal of this course is to train the participants in the safe operation, control, configuration, troubleshooting and maintenance of ABB Marine HV (>1 kV) air-insulated switchgear, circuit breakers and protective relays.

Learning objectives

Upon completion of this course the participants will be able to:

  • Locate hardware components.
  • Verify and replace switchgear apparatus.
  • Perform preventive maintenance.  
  • Use CAP501/CAP505, a programming and configuration tool for protective relays.


General topics:

  • Introduction to ABB Marine Services.
  • Safety procedures while working on the switchboard.
  • Protection  functions.
  • Power plant regulation principles.

Hardware description:

  • Unigear ZS1 compartments.
  • Function of HD4 gas circuit breaker parts.
  • Function of VD4, Vmax vacuum circuit breaker parts.
  • Function of V vacuum contactor parts.
  • Function of REM545 and REF543 protective relay parts.


  • Removal and installation of circuit breakers.
  • Earth switch operations.
  • Check switchgear interlocks.
  • Navigate technical level menu in protective relays.
  • Download/Upload parameters to/from protective relays with CAP501/CAP505.

Software introduction:

  • CAP501 relay setting tool.
  • Hands-on experience with CAP505 interface and protective relays.

Fault-tracing and troubleshooting:

  • Interpret alarms and fault messages.
  • Reset trip and block signal.
  • Trace digital input signals to protective relays.


  • Classroom lectures.
  • Demonstration and practical lessons on our training switchgear.

Course outline

General Information

Duration: 4 days
Venue: Singapore
Genoa or Dalmine
Beijing or Xiamen

Marine power plant basic for technical staff in ABB propulsion and marine high voltage safety course or similar knowledge is advisable

Additional information: Minimum 6, maximum 8 participants
On-site training is available on request
Student profile:

Marine engineers and electrotechnical personnel at operational and management level

Download: Course description as a pdf
Certification: This course has been certified in accordance with "DNV Standard for Certification of Learning Programmes - 3.201"

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