Retrotec DucTester 341 Manual do Utilizador descarregar pdf (Página 77)

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Appendix E: Using a generator for power

Retrotec recommends a generator with inverter type AC power output. Size the generator capacity

above the maximum power required in order to reduce distortion of the AC power waveform. The

higher the rated power output, the better. Suggestions for minimum generator output sizes are 3000W

for Blower Doors and 500W for DucTesters.

Table 13: Acceptable generator power output.

Fan

Operating

Voltage

Max Operating

Current (Watts)

Max Inrush

Current

Minimum Generator

Power Output

Model 300 Series DucTester

120VAC

2A (240W)

2.5A (300 W)

500 W

208VAC

N/A

Model 300 w/2350 Fan Top

120VAC

2A (240W)

3A (360W)

208VAC

0.9A (187W)

1.2A (250W)

When selecting the generator, look for key words and phrases including:

 “inverter output”

 “utility-grade AC power”

 “suitable for sensitive electronics”

Table 14: Portable generator AC power output types.

Type of AC Power Output

Comments/Expectation

Inverter

Best; Compatible

Recommended

AVR – Automatic Voltage Regulation

Questionable; May not perform

Not Recommended

Brushless

Worse; May not perform

Not Recommended

CycloConverter

Worst; May not perform

Not Recommended

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