SamplexPower SAM Series, Owner'S Manual

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22 | SAMLEX AMERICA INC.
An example of this calculation for a 12V Inverter is given below:
Let us say that the total continuous ac Watts delivered by the 12v inverter = 1500W.
Then, using Formula 2 above, the DC current to be delivered by the 12V batteries =
1500W ÷10 = 150 Amperes.
next, the energy required by the load in ampere Hours (ah) is determined:
For example, if the load is to operate for 3 Hours, then as per Formula 3 above, the energy
to be delivered by the 12V batteries = 150 Amperes × 3 Hours = 450 Ampere Hours.
finally, as per rule of thumb at formula 4, the ah capacity of the batteries should be
twice the energy required by the load in ah
= 450 Ah x 2 = 900 Ah.
4.7 ac SiDe connectionS
feeding Grid ac power - use as Backup ac power Source
- Power cord with NEMA5-15 Plug (10A, B in Fig 3.1) is used to feed AC input power to
the unit when the unit is used as a backup AC Power Source.
- Use 15A/20A, GfCI protected AC outlet for this connection.
connecting ac Loads
Connect the AC loads to the NEMA5-5R outlet(s) (1, Fig 3.1).
!
caution!
1. Do not connect the ac output of the unit to ac distribution wiring where
the neutral is bonded to Ground. the inverter will see this as abnormal
condition of Ground fault and will shut down.
2. the ac output of this unit can not be used in parallel with another ac
power Source – Severe DamaGe WiLL occur!
4.8 LimitinG eLectro-maGnetic interference (emi)
This unit contains internal switching devices that generate conducted and radiated
electromagnetic interference (EMI). The EMI is unintentional and cannot be entirely
eliminated. The magnitude of eMI is, however, limited by circuit design to acceptable
levels to provide reasonable protection against harmful interference. This unit can
conduct and radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications.
The effects of EMI will also depend upon a number of factors external to the unit like
proximity of the unit to the EMI receptors, types and quality of connecting wires and
cables etc. EMI due to factors external to the unit may be reduced as follows:
- ensure that the unit is firmly grounded to the ground system of the building or
the vehicle.
- Locate the unit as far away from the eMI receptors like radio, audio and video
devices as possible.
- Keep the DC side wires between the battery and the unit as short as possible.
SeCTIOn 4 | Installation