Xantrex Technology XFR 2800 manual Calibration Setup, Service, Precautions, Introduction

Section 5. Calibration

Introduction

WARNING

Exercise caution when using and calibrating a power supply. High energy levels can be stored at the output voltage terminals on a power supply in normal operation. In addition, potentially lethal voltages exist in the power circuit and on the output and sense connectors of a power supply with a rated output greater than 40 V. Filter capacitors store potentially dangerous energy for some time after power is removed.

Adjustments to programming and readback accuracy for the power supply are made using cover-off procedures which must be performed by a service technician.

Calibration Setup

Service	• Follow established antistatic procedures.
Environment	• Work at a bench with adequate room and support for the unit under test and for
and	all equipment required.
Precautions	• To reduce shock hazard, use only an insulated, straight-blade screwdriver when
	calibrating trim potentiometers.
	• NEVER calibrate these units alone. Ensure that someone is present who can help
	should an accident occur.

Equipment Required

You will need the following equipment when calibrating your power supply.

•5 1/2 digit true RMS voltmeters (DVMs) (±0.05% accuracy) with test leads

•Current shunt 1 mV/A (±0.25%) and connecting wire. The recommended current ratings for the DC shunt and connecting wire must be at least 10% greater than the power supply's output current rating. Please see Table 2.4, “Current Carrying Capacity for Load Wiring,” on page 45.

•Non-conducting, straight-bladed screwdriver

Release 2.1 79