Copyright © 2012 CyberPower Systems, Inc.
Installation
6
will not be operating at its maximum power point, this may result
in lower than expected energy harvest.
Maximum PV Power
The solar array should be sized such that the maximum power
output dose not exceeds the limit of the MPPT operation window.
The array voltage should never exceed 550 VOC (open circuit
voltage) under any thermal condition. Likewise, ensure that ISC
(short circuit current) rating of the array at any temperature does
not exceed the short circuit current of the On-grid Solar Power
Generating System.
Guideline for Matching PV Array Size to On-grid Solar
Power Generating System Input
For determining the number of panels required in the PV string
(panels connected in series), you must ensure that the following
requirements are met:
1.
To avoid damage to the On-grid Solar Power Generating
System, ensure that PV array output will never exceed
550Vdc under any conditions.
2.
Do not exceed the maximum array short circuit current
rating marked on the On-grid Solar Power Generating
System.
3.
To achieve maximum energy harvest from your array,
ensure that the V
MP
(voltage at maximum power) dose not
drop below 250Vdc under most condition for CPSPV3600ETL
model.
Grounding Requirements
WARNING!
Shock hazard
The On-grid Solar Power Generating System must be grounded by
connection to a grounded permanent wiring system.
AC grounding
The On-grid Solar Power Generating System must be connected
to a grounded, permanent wiring system via the On-grid Solar
Power Generating System ground terminal.
The ground terminal must also be connected to the main utility
breaker panel ground bar and to the house-grounding rod
according to requirement.
Lightning protection
Reduce the risk of lightning damage by using a single-point
grounding system. In this system, all ground lines terminate at the
same point. This point normally is the main utility ground installed
by the utility company to provide a ground for the house wiring. This
ground usually consists of a copper rod driven 1.5 to 2.5 meters (6 to
8 feet) into the earth.
Routing the wires
Preparing for the Installation
Ensure your local utility is consulted for any requirements for
connecting to or returning power to the grid. Obtain all permits
necessary to complete the installation. Consult your local and
national electrical codes for more information.
This section includes the following topic:
1.
Wiring
-
The wires to AC terminal:
Acceptable wire size:
!
IN SLV Series
CPSPV2000ETL
CPSPV3000ETL
CPSPV3600ETL
MPPT tracker
1
1
1
Input current
limitation
12A
15A
15A
Max. Input short
circuit current
14A
18A
18A
MPPT start
voltage (Vdc)
130
130
130
MPPT window
(Vdc)
100~550
100~550
100~550
On-grid Solar
Power
Generating
System full load
range (Vdc)
175~450
210~450
250~450
On-grid Solar
Power
Generating
System de-rating
range (Vdc)
100~175
100~210
100~250
Maximum input
voltage (Vdc)
550
550
550
