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7
April 2021
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Solar Stik
®
, Inc.
PRELIMINARY DRAFT
24VDC HyPR 3000 Operator and Maintenance Manual
Figure 1. Schematized power flow from a top-down view of the interior of the HyPR 3000
Theory of Operation
The HyPR 3000 coordinates the support of AC and DC loads using power supplied from AC and/
or DC sources. Both AC and DC power sources energize the HyPR 3000 internal DC circuitry (DC
bus), or the “Inter-Connect” circuit. The presence of DC bus voltage (battery voltage) enables the full
function of the HyPR 3000 internal circuits. System voltage and net current can be monitored on the
DC User Interface. However, it will report only a negative current value if no PV array is connected.
A schematized illustration of the DC bus and its relationship to internal components, inputs and
outputs is shown below. The arrows indicate the flow of current in the circuits.
Solar/DC Input
AC Input
24 VDC bus/Inter-Connect System
9-36 VDC Scavenge
85-265 VAC,
47-63 Hz
24 VDC
Inter-Connect
Port
120 VAC
60 Hz
PV
Input
24 VDC
IN/OUT
NATO port
solar
charge
controller
AC-
powered
DC charger
9-36
VDC
Expander
Paks
Inverter
DC buck/boost
charger
Breaker “location”
Direction of current flow
Meter/Shunt