1 INTRODUCTION
The UPS should meet the general requirements set out in regulation IV/13 of SOLAS 1974, as amended, and in resolution A.694(17), as applicable, and should also comply with the following
requirements.
2 GENERAL
2.1 An uninterruptable power supply system (UPS) is defined as a device which for a
specific period of time supplies continuous power to radio equipment independent of any
power failures in the ship's main or emergency source of electric energy.
2.2 The UPS should comprise at least:
-
.1 an automatic charger, complying with the requirements of paragraph 4.5 of
these guidelines and of annex 2; and
-
.2 rechargeable accumulator batteries, complying with the requirements of annex
1.
3 CONTROLS AND INDICATORS
Provisions should be made for an aural alarm and visual indication at the position from
which the ship is normally navigated, indicating any failure in the UPS which is not
already monitored by the alarm and indicators required by paragraph 5 of these
guidelines and by annex 2.
4 READINESS
The UPS should be operational within 5 s of switching on.
5 SAFETY PRECAUTIONS
The UPS should be so designed and constructed that it is protected against damage
resulting from disconnecting the batteries or, with the battery disconnected,
short-circuiting the UPS battery connections. If this protection is provided by
electronic means it should automatically reset following removal of the open or
short-circuit conditions.