User manual

AC Adjustable Frequency Drives
Important Safety and Product Information
167
IP_2 — Water is dripped onto the enclosure from a “drip box”
having spouts spaced on a 20 mm square pattern, at a
“rainfall” rate of 3 mm/min. The enclosure is placed in
4 fixed positions tilted 15° from its normal operating
position, under the drip box. Test time = 2.5 min. for
each position of tilt.
IP_3 — Water is sprayed onto all sides of the enclosure over an
arc of 60° from vertical, using an oscillating tube device
with spray holes 50 mm apart (or a hand-held nozzle
for larger enclosures). Flow rate, oscillating tube device
= 0.07 l/min. per hole x number of holes; for hand-held
nozzle = 10 l/min. Test time, oscillating tube = 10 min.;
for hand-held nozzle = 1 min./m
2
of enclosure surface
area, 5 min. minimum.
IP_4 — Same as test for IP_3 except spray covers an arc of
180° from vertical.
IP_5 — Enclosure is sprayed from all practicable directions
with a stream of water at 12.5 l/min. from a 6.3 mm
nozzle from a distance of 2.5 to 3 m. Test time =
1min./m
2
of enclosure surface area to be sprayed, 3 min.
minimum.
IP_6 — Enclosure is sprayed from all practicable directions
with a stream of water at 100 l/min. from a 12.5 mm
nozzle from a distance of 2.5 to 3 m. Test time =
1min./m
2
of enclosure surface area to be sprayed, 3 min.
minimum.
IP_7 — Enclosure is immersed in water in its service position
for 30 min. Lowest point of enclosures less than 850
mm tall = 1000 mm below surface of water. Highest
point of enclosures more than 850 mm tall = 150 mm
below surface of water.
IP_8 — Test conditions are subject to agreement between
manufacturer and user, but shall be at least as severe as
those for IP_7.
Tests for Protection Against Access to
Hazardous Parts (second characteristic
numeral)