ABB ACH550 Bedienungsanleitung PDF herunterladen (Seite 385)

100

101

Appendix and available options 381

ACH550 User's Manual

Derating

The load capacity (current and power) decreases if the

installation site altitude exceeds 1000 meters (3300 ft), or if the

ambient temperature exceeds 40°C (104°F) or if 8 kHz switching

frequency (parameter 2206) is used.

Temperature derating

In the temperature range +40°C...50°C (+104°F...122°F) the

rated output current is decreased 1% for every 1°C (1.8°F)

above 40°C (+104°F). The output current is calculated by

multiplying the current given in the rating table by the derating

factor.

Example. If the ambient temperature is 50°C (+122°F) the

derating factor is 100% - 1%/°C = 90% or 0.90.

The output current is then 0.90*I

Altitude derating

In altitudes from 1000...4000 m (3300...13,200 ft) above sea

level, the derating is 1% for every 100 m (330 ft). If the

installation site is higher than 2000 m (6600 ft) above sea level,

please contact your local ABB distributor or office for further

information.

Single phase supply derating

For 208...240 Volt series drives, a single phase supply can be

used. In that case, the derating is 50%.

Switching frequency derating

If the 8 kHz switching frequency (parameter 2206) is used,

derate P

and I

to 80%.

00Template.book Page 381 Friday, January 2, 2004 2:55 PM

1 2 ... 380 381 382 383 384 385 386 387 388 389 390 ... 434 435

Kommentare zu diesen Handbüchern

Keine Kommentare

ABB ACH550 Bedienungsanleitung Seite 385

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung ABB ACH550