Sub-Sea Components; Power Supply Unit - Teledyne 440 System Manual

against this type of damage, always take the following precautions:
❐ Never try to use unauthorised software with the SDC.
❐
Never power-on or reset the SDC with a USB drive connected unless you
need to reinstall all the SDC10 software (see
Procedure" on page
❐
Use an external PC running up-to-date anti-virus software to check digital
media before you use them with the SDC. Use only virus-free digital media
with the SDC. You may install appropriate and approved virus protection soft-
ware on the SDC if you prefer. To maintain full effectiveness you must keep
this type of protection up to date.
❐
Do not use any digital media with the SDC if you are unsure whether it is free
from viruses.
❐
Do not power-on the SDC if you suspect a virus has infected it.
Teledyne TSS takes every possible precaution to prevent virus infection before
shipment. If you suspect your SDC has become virus infected, contact Teledyne
TSS for advice and then arrange to return the SDC to Teledyne TSS for repair.

2.3 Sub-sea Components

The sub-sea installation comprises the following component parts:
❐
A Sub-sea Electronics Pod (SEP).
❐ A Sub-sea Power Supply Unit (PSU).
❐
A coil array with three Teledyne TSS search-coils. See
Installation" on page 3-8
❐ Frame components to mount the coils onto the ROV.
❐
A sub-sea altimeter.
❐
Cables to interconnect the sub-sea components of the 440 System and to connect them to the
electrical distribution system of the ROV.

2.3.1 Power Supply Unit

The PSU accepts a single phase AC electrical supply nominally at 110V AC at 45 to 65Hz. A switched-
mode circuit inside the PSU generates the conditioned DC supplies required by the SEP, with all DC
supplies passing through a -filter network to prevent noise and interference from reaching the SEP.
See section 8.1.3 "Sub-sea Power Supply Pod" on page 8-3
requirement. There is a cartridge fuse inside the PSU to protect the System from overload conditions.
The PSU has a port for connection to the ROV electrical distribution system and umbilical. This
connection uses a Power and Communications cable supplied with the System that has a multiway
connector that mates to the PSU and open tails for connection to the ROV.
Connection between the SEP and the PSU is through a single cable that has a multiway connector at
each end.
DPN 402196 Issue 4.1
6-33).
for instructions to install the coils.
© Teledyne TSS
2 – System Overview
section 6.5 "System Recovery
section 3.1.3.3 "Coil Assembly and
for full details of the PSU power
2- 5