9. Annex II; energy saving
“Technical Regulations on the Safety of Sea Transport Items”, approved by the RF Government
Order No.620 of 12 August 2010, declared following in the Paragraph 6:
“Designers, builders and manufacturers of sea transport and infrastructure items shall
ensure the energy efficiency of such items.”
9.1 VDR PCB controllers
VDR PCB controllers are powered from 110/230 Vac vessel main power supply and internal power
circuit provides excessive voltage protection (suppressor and fuses) and reverse polarity
protection.
VDR PCB controllers were developed in accordance with following Netwave Systems
implementations:
- Stability during VDR operation.
- Quality of selected components (brand name components).
- The “internal power supply circuit” module on PCB provides:
o Fused protection.
o Galvanic isolation by DC-DC conversion of the input 24VDC voltage into
necessary values, and its stabilization on PCB.
9.2 Power consumption calculation
NOTE: Below mentioned calculation is given with a three times extra power consumption,
especially for APP PCB controllers. Reason of that: to calculate and select a proper power supply
with some extra resources and possibility to add any optional components in the future VDR usage
- like additional microphones and interfaces.
Calculation of the Power consumption (Example):
1. NW6000 core module incl charger: Power consumption ~0,3А x 230 Vac = 50W
2. Microphone: Power consumption per each: ~0.08А x 24Vdc = ~2W
3. VHF interface: Power consumption 1,5A x 24 Vdc = 4W
4. Interface coupler module: Power consumption 0,08A x 24 Vdc = ~ 2W
5. 8 channel Interface modules: Power consumption per each: ~ 0.08A x 24 Vdc = ~2 W
6. Storage media (float free and hardened capsule) 12 W
Calculation of the Power Consumption per NW6000 system:
P = NW6000 core module + (2W x Number of microphones + VHF interface) + (2W x number of
interface modules (8 channels) + 4W coupler) + storage media.
Recommended Power Supply for the aforementioned example: 220 Vac, 120W (minimum)
Taking power loss in cabling at approx. 10W.
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