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Step 1: Designing the Installation
445-0089-01-01 3–5
AC shorepower A source of 120 volt, 60Hz alternating current is needed to provide energy for
charging batteries and to pass through to AC loads. This source could be the utility
grid (power company) or an AC generator. An automatic or manual AC source
selector switch can be used to connect one of the multiple sources of shorepower
to the PROsine system.
Generator The PROsine is compatible with virtually all generators which produce nominally
120Vac 60Hz power. The best generators produce a sinewave output, others
produce a distorted sinewave, and the lower quality generators produce a
"modified sinewave" (MSW) or squarewave output. The PROsine will operate
correctly on sinewave or distorted-sinewave generators; it will also operate
correctly on most MSW or squarewave generators but some models of these
generators may prove incompatible. See Chapter 6, “Troubleshooting” for errors
related to generator incompatibility.
Since the charging current limit of the PROsine may be configured all the way
down to 0A it is possible to use very small generators with the PROsine to charge
batteries. Xantrex has operated the PROsine from a generator as small as 700W.
To do this, configure the "AC Breaker Size" (found in Configure PROsine —
Basic Menu on page 4–7) to a current rating compatible with the generator size.
For example, 6A should work well with a 700W generator, 8A should work with a
1000W generator - experiment to find the largest setting that the generator can
accommodate. To operate the PROsine at the full 100A charging current rating
Xantrex recommends a 2kW generator or larger and a breaker size setting of 20A.
AC Disconnect and
Over-Current
Protection Device
To meet CSA, UL, and electrical code requirements, the PROsine’s AC and DC
inputs and outputs must be provided with over-current protection (such as a circuit
breaker or fuse) and a disconnect device, as follows:
AC Input: The circuit breaker or fuse used to protect the PROsine must be
rated no more than 30A and must be approved for use on 120Vac branch
circuits. The wire used between the breaker and the PROsine input must be
sized to match the circuit breaker, in accordance with the electrical codes or
regulations applicable to your installation. The “AC Service Rating” setting of
the PROsine must also be set to match the size of the breaker provided. (See
Chapter 4, “Configuration” and the following section.)
AC Output: The circuit breaker or fuse must be rated at no more than 30A
and must be approved for use on 120Vac branch circuits. The wire used
between the PROsine and the AC output breaker must be sized to match the
AC input circuit breaker’s rating. The wire from the AC output breaker to
your loads must be matched to the rating of the AC output breakers.
Disconnect Devices: Each system requires a method of disconnecting the
AC circuits. If the over-current protection device is a circuit breaker, it will
also serve as the disconnect. If fuses are used, separate AC disconnect
switches will be needed ahead of the fuses.
Important:
Throughout this manual, the term “shorepower” refers to AC input power
from a utility grid, generator, or other source.