ISO 22555:2022 pdf download – Ships and marine technology — Propeller pitch indicators.
4.4 Alert If the equipment is capable of raising an alert, it shall comply with MSC.302 (87), IEC 62923-1 and IEC 62923-2. 5 Performance requirements 5.1 General The transmitter shall have the capacity to satisfy the requirements specified in 5.2, 5.3 and 5.4 when all connected indicators are operating simultaneously. The manufacturer shall clearly state the maximum number of indicator(s) or the capacity of connected indicator(s) that can be supported by a transmitter. 5.2 Calibration accuracy To calibrate the indicator system, the shaft of a transmitter is gradually rotated from the zero position to the maximum angle ahead (starboard) or astern (port), and the angles shown by an indicator are recorded every 5° of rotation. The difference between the angle of the transmitter shaft and the corresponding value shown at an indicator shall be within ±1,5 % of the sum of the maximum angle in both directions. 5.3? Damping? efficiency If a voltage is suddenly applied while the transmitter shaft is approximately at half of full-scale position and the indicator pointer is set to the zero position, the pointer shall be reset to that position within 5 s or less. 5.4? Power? supply? fluctuation a) The performance specified in 5.1 and 5.2 shall be maintained when the system is subjected to the power supply fluctuations. b) After repeated makings and breakings, the designated performance shall be demonstrated without carrying out manual adjustments. c) When the rated voltage and frequency are subjected to the combinations of fluctuations, as given in Table 1, the designated performance shall be demonstrated.
6 Methods of testing and required test results 6.1 Construction The construction of an indicator system shall comply with the requirements specified in Clause 4. If a display is used for presentation, confirm using documented evidence that the equipment complies with IEC 62288. 6.2 Environmental test Unless otherwise stated in this document, all the tests shall be carried out according to the requirements of IEC 60945. The manufacturer shall determine which components of the indicator system shall be protected or exposed, as defined in IEC 60945. 6.3 Calibration test The calibration test shall be carried out in accordance with 5.2 and shall satisfy the requirements specified therein. 6.4 Damping test The damping test shall be carried out in accordance with 5.3 and shall satisfy the requirements specified therein. 6.6 Alert test If the equipment under test is capable of raising an alert, confirm using documented evidence that the equipment complies with IEC 62923-1 and IEC 62923-2. 7 Interface If the indicator system provides an interface facility, it shall meet the requirements prescribed in IEC 61162-1, IEC 61162-2 or IEC 61162-450.
ISO 22555:2022 pdf download – Ships and marine technology — Propeller pitch indicators
