7.4 Ambient ConditionsEnvironmentEnclosure size A, protection ratings IP20/Chassis, IP21/Type 1, IP55/Type 12, IP66/Type 4XEnclosure size B1/B2, protection ratings IP21/Type 1, IP55/Type 12, IP66/Type 4XEnclosure size B3/B4, protection ratings IP20/ChassisEnclosure size C1/C2, protection ratings IP21/Type 1, IP55/Type 12, IP66/Type 4XEnclosure size C3/C4, protection ratings IP20/ChassisEnclosure kit available ≤ enclosure size A IP21/TYPE 1/IP4X topVibration test enclosure A/B/C 1.0 gMaximum relative humidity 5–95% (IEC 721-3-3; Class 3K3 (non-condensing) during operationAggressive environment (IEC 721-3-3), uncoated class 3C2Aggressive environment (IEC 721-3-3), coated class 3C3Test method according to IEC 60068-2-43 H2S (10 days)Ambient temperature Maximum 50 °CDerating for high ambient temperature, see chapter 5 Special Conditions.Minimum ambient temperature during full-scale operation 0 °CMinimum ambient temperature at reduced performance -10 °CTemperature during storage/transport -25 to +65/70 °CMaximum altitude above sea level without derating 1000 mMaximum altitude above sea level with derating 3000 mDerating for high altitude, see chapter 5 Special Conditions.EMC standards, Emission EN 61800-3EMC standards, Immunity EN 61800-3Energy efficiency class1) IE21) Determined according to EN50598-2 at:• Rated load• 90% rated frequency• Switching frequency factory setting• Switching pattern factory setting7.5 Cable SpecificationsMaximum motor cable length, screened/armoured 150 mMaximum motor cable length, unscreened/unarmoured 300 mMaximum cross section to motor, mains, load sharing and brake1)Maximum cross section to control terminals, rigid wire 1.5 mm2/16 AWG (2 x 0.75 mm2)Maximum cross section to control terminals, flexible cable 1 mm2/18 AWGMaximum cross section to control terminals, cable with enclosed core 0.5 mm2/20 AWGMinimum cross section to control terminals 0.25 mm21) See electrical data tables in chapter 7.1 Electrical Data for more information.It is mandatory to ground the mains connection properly using T95 (PE) of the frequency converter. The ground connectioncable cross section must be at least 10 mm2 or 2 rated mains wires terminated separately according to EN 50178. See alsochapter 3.2.8 Earth Leakage Current. Use unscreened cable.Specifications Design GuideMG20N602 Danfoss A/S © 09/2014 All rights reserved. 1517 7
