UPMSP High School Solar Repair study plan

Explain how photons create electron-hole pairs and describe how a module's I-V curve shifts with irradiance and cell temperature

Distinguish grid-tied, off-grid and hybrid PV systems by their component chain and identify which parts fail most often in each

Practise safe isolation and open-circuit voltage measurement on a de-energised module string using a multimeter

Write a one-page fault-flow chart that starts from 'no output' and branches to open circuit, short circuit, shading or controller failure

Use a multimeter and insulation tester to measure Voc, Isc, continuity, earth resistance and string insulation resistance to recognised pass limits

Diagnose the four common connector and cable faults: loose MC4 crimp, reversed polarity, water ingress and undersized cable voltage drop

Calculate voltage drop for a given cable length, current and cross-section and decide whether the run needs upsizing

Identify the purpose and correct placement of fuses, DC isolators, surge protective devices and string overcurrent protection

Read a module datasheet and extract Voc, Isc, Vmp, Imp, Pmax, temperature coefficient and NOCT, then explain what each rating means in the field

Recognise the physical construction layers of a framed module and identify the failure signatures of each: delamination, hot spot, cracked cell, snail trail, junction-box burn

Perform a site assessment that records tilt, azimuth, shading windows and roof or ground anchor condition

Select and torque-check mounting hardware and confirm array tilt and orientation against the design

Compare flooded lead-acid, AGM, gel and lithium iron phosphate batteries on cycle life, depth of discharge, charging profile and maintenance needs

Configure a charge controller's absorption, float and equalisation settings and explain the damage caused by each wrong setting

Test battery state of health with a hydrometer reading and a rested open-circuit voltage measurement, and interpret both results

Wire a small stand-alone load such as a solar lamp or DC fan with correct polarity, fusing and controller protection

Trace the power path through a PWM controller, MPPT controller and inverter, and state what each stage does to voltage and current

Diagnose inverter faults from displayed error codes, no-load current draw and output waveform checks with a multimeter or clamp meter

Verify MPPT tracking behaviour by comparing array Vmp with battery voltage under changing irradiance

Test a controller's low-voltage disconnect and reconnect thresholds and confirm they protect the battery

Build a cleaning schedule that specifies frequency, water quality, tools and the times of day to avoid thermal shock to glass

Interpret monitoring data to spot underperformance: compare actual yield against expected yield from irradiance and array rating

Apply lockout and tagout, prove-dead procedure and correct personal protective equipment before any DC work

Inspect and test earthing and lightning protection bonds and record resistance values against the acceptable limit

Perform a full string-level fault-finding sequence from visual inspection through open-circuit and short-circuit current comparison between strings

Isolate and repair a failed MC4 connector and a damaged cable run, then retest insulation resistance and continuity

Identify a failed bypass diode or hot spot using thermal or current comparison and state the repair or replacement decision

Assess a sulphated or unbalanced battery bank and decide between equalisation, cell replacement or full replacement

Complete two timed mixed-domain practice sets and score above 80 percent on fault diagnosis and safety items

Review every missed question and write the underlying rule or measurement that would have led to the right answer

Recite the safe isolation sequence and the emergency response for DC arc or battery acid contact without notes

Summarise the ten domains into a single revision sheet of key numbers, limits and setpoints