ECO REFERENCE MANUAL
8-11
SC
ENVIRONMENTAL CONSIDERATIONS
The inverter is designed for operation in an HVAC
environment. However there are certain
limitations which must be considered; the
following check list should help:
•
Check that the airflow through the inverter will
not be blocked by wiring etc. Ensure adequate
clearance between cable trunking and the top
and bottom ventilation ducts of the inverter.
•
Make sure the temperature of the air does not
exceed 50
°
C MICROMASTER Eco or 40
°
C
MIDIMASTER Eco. Remember to allow for
any temperature rise inside the enclosure or
cubicle.
•
The inverters are available with protection
levels of IP20 (MICROMASTER Eco), IP21 or
IP56 (MIDIMASTER Eco).
IP20 and IP21 units need additional protection
against dust , dirt, and water.
•
The inverter is designed for fixed installation
and is not designed to withstand excessive
shock and vibration.
•
The inverter will be damaged by corrosive
atmospheres.
•
Protect the unit from dust; dust can build up
inside the unit, damage the fans, and prevent
proper cooling. Conductive dust, such as
metal dust, will damage the unit.
•
Give due consideration to Electromagnetic
Compatibility (EMC), such as:
1. The inverter should be protected from the
effects of equipment such as Power Factor
Correction equipment, Resistance Welding
Equipment etc.
2. The inverter should be well grounded.
3. How will the inverter and any control
equipment (contactors, PLCs, relays
sensors etc.) interact? Contactor coils
should be suppressed using an R-C
module. BMS units actuators and sensors
should be well earthed.
IP Protection
The IP number
defines the level of
Ingress Protection (IP)
for the particular
inverter.
MICROMASTER Eco
models have an IP
rating of IP20 (US
equivalent NEMA 1).
MIDIMASTER Eco
models have an IP
rating of IP21 (US
equivalent NEMA 1)
or IP56 (US
equivalent NEMA
4/12).
Table 4 explains what
the numbers in the IP
rating mean in terms
of ingress protection:
First Number
IP
X
XX
0
No protection
1
Protected against solid
objects of 50mm or bigger
2
Protected against solid
objects of 12mm or bigger
3
Protected against solid
objects of 2.5mm or bigger
4
Protected against solid
objects of 1mm or bigger
5
Protected against dust
(limited ingress)
6
Protected against dust
(totally)
Second Number
IPX
X
X
0
No protection
1
Protected against water
falling vertically
2
Protected against direct
sprays up to 15 deg. From
vertical
3
Protected against direct
sprays up to 60 deg. From
vertical
4
Protected against sprays
from all directions
5
Protected against low
pressure jets from all
directions
6
Protected against high
pressure jets from all
directions
7
Protected against immersion
between 15cm and 1m
8
Protected against immersion
under pressure
Third Number (not
quoted)
IPXX
X
0
No protection
1
Protected against 0.225J
impact
2
Protected against 0.375J
impact
3
Protected against 0.5J
impact
5
Protected against 2.0J
impact
7
Protected against 6.0J
impact
9
Protected against 20.0J
impact
