Morningstar SunSaver Series User Manual

SunSaver
Field Testing Procedures
Abstract:
The following test procedure was developed for use in fi eld conditions, where no external
power sources are available.
Technical Documentation
T e c h n i c a l D o c u m e n t a t i o n

Morningstar SunSaver Series Specifications

General

Series	SunSaver
Controller Category	PWM
Nominal Voltage	12V/24V
Nominal Battery Voltage	12V/24V
Load Control	Yes
Operating Temperature	-40°C to +60°C
Model	SunSaver Series
Rated Current	10A, 20A
Input Voltage	12V, 24V
Protection Features	Short circuit, overcurrent, reverse polarity, high voltage
Maximum Output Current	10A, 20A

Summary

SunSaver Field Testing Procedures

Document Abstract

Summary of the test procedure developed for field conditions without external power sources.

Preparation and Safety

Details on recommended tools and essential safety precautions for electrical circuit testing.

Testing Procedure Steps

Step 1: No Power Applied to SunSaver

Checking for short circuits to ground between various terminals with no power applied.

Step 2: Battery Connected to Battery Terminals Only

Testing voltage measurements at battery and load terminals with only battery connected.

Step 3: PV and Battery Power Applied to the Controller

Evaluating voltage and AC signal characteristics when both PV and battery are connected.

Step 4: PV, Battery, and Small (2A) Load Connected

Measuring load voltage with PV, battery, and a small load connected to check LVD FETs.

Step 5: SunSaver Installed in the Power System

Final checks for correct operation, fuses, wiring, and electrical contact in the installed system.