EM 122
Electrical checks
Scope
This section of the manual contains the test procedures for the EM 122 system’s power
and signal interface cables.
WARNING
These checks must be completed before any power is switched onto
the system.
Cabling
Visual cable inspection
Refer to the cable plans and interconnection diagrams, and check all power and
interconnection cables. Any locally fitted plugs and connectors should also be checked
to ensure that the correct types have been used for the specific locations. (Sealed or
spark-proof connectors in areas where flammable gasses may accumulate, etc..)
Ensure that all cable connections have been made according to the cable plan, and that
all connections are tight and secure. Ensure that all cables are correctly laid in conduits,
or are otherwise protected according to the regulations and recommendations laid down
by the vessel’s registering authority. Ensure all protective covers are fastened correctly.
Cable connections and continuity
After the cable connections have been completed and the visual inspection has been
carried out, all the cable cores must be checked for correct connection and continuity.
Refer to the cable plans and interconnection diagrams, and check all interconnection
cables. Any locally fitted plugs and connectors must be checked for shorts or open
circuits. Ensure all cable connections have been made according to the cable plan, and
that all connections are tight and secure.
The check procedure will require two engineers equipped with two-way communication
devices; one will require continuity test equipment, while the other will require a suitable
shorting strap.
Follow the check procedure below for each cable core
1
Position yourselves one at each end of the cable to be checked. Good
communications must be established between you and your assistant.
2
Ensure that the cable to be tested is not connected to any power source.
• If a cable terminates in a plug at the unit, the test will be more easily conducted if
the plug is disconnected.
3
Select one pair of cable cores, and check that the cores are connected to the correct
terminals in the unit.
106
317669/B
Содержание EM 122
Страница 1: ...EM 122 Multibeam echo sounder Installation Manual...
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Страница 13: ...EM 122 Figure 1 System diagram 317669 B 11...
Страница 26: ...EM 122 Figure 6 EM 122 Gondola example Cd021 107 24 317669 B...
Страница 27: ...Transducer arrays Figure 7 EM 122 blister and steel pipe arrangements example 317669 B 25...
Страница 42: ...EM 122 B B B Plastic TX protection window 40 317669 B...
Страница 46: ...EM 122 Figure 10 EM 122 Transceiver unit mounting 44 317669 B...
Страница 52: ...EM 122 Figure 13 Rear view 50 317669 B...
Страница 54: ...EM 122 Figure 15 Preamplifier Unit mounting 687 52 317669 B...
Страница 60: ...EM 122 Figure 18 Remote Control Junction Box outline dimensions 58 317669 B...
Страница 85: ...Cable layout and interconnections Figure 32 Transceiver Unit sub racks rear view 317669 B 83...
Страница 88: ...EM 122 Figure 34 Preamplifier underneath view 86 317669 B...
Страница 97: ...Cable layout and interconnections Figure 40 EM 122 Transceiver Unit s rear panel RX 317669 B 95...
Страница 126: ...EM 122 Figure 57 Cable layout 0 5 degree TX page 1 of 2 Cd021 106 Page 1 of 2 315396 Pro03 124 317669 B...
Страница 127: ...Drawing file Figure 58 Cable layout 0 5 degree TX page 2 of 2 Cd021 106 Page 2 of 2 315396 Pro03 317669 B 125...
Страница 128: ...EM 122 Ice window Figure 59 TX Ice window 126 317669 B...
Страница 129: ...Drawing file Figure 60 RX Ice window 317669 B 127...
Страница 131: ...Drawing file Preamplifier Unit Figure 62 RX Preamplifier Unit internal cabling 317669 B 129...
Страница 132: ...EM 122 Figure 63 RX Preamplifier Unit internal cabling 130 317669 B...
Страница 154: ...2013 Kongsberg Maritime...