Multiple Units Installation; Wireless Signal Environmental Checks - ABB PVS-120-TL Quick Installation Manual

6.
The minimum clearance distances depends from multiple factor:
- Ventilation flow on the rear side of the inverter. Depending of the support where the inverter is installed it
changes the upper (A) required free space: if the inverter is installed on a support without any openings (e.g.
a wall), the heat flow will be entirely directed to the top of the inverter; for this reason the upper (A) minimum
required free space must be 50 cm.
Otherwise in case of the inverter is installed on a support with openings (e.g. frame installation) the heat can freely
flow on the rear side of the inverter; so the upper (A) minimum required free space can be reduced to 15 cm.
- Possible flooding or grass cutting evenience. It changes the bottom (B) or the rear (D - only in case of
horizontal installation) required free space: If the inverter is installed in a place where there are concrete risk
of flooding or grass cutting evenience, the bottom (B) or the rear (D - only in case of horizontal installation)
minimum recommended free space is 50 cm; otherwise in case of the inverter is installed in a place where
there aren't risk of flooding or grass cutting evenience, the bottom (B) and rear (D - only for horizontal instal-
lation) minimum required free space must be 15 cm.
- Cables curvature radius. Sides (C) minimum required free space may depends from cable type (cable di-
mension, curvature radius, etc..): this evaluation must be done by the installer during the plant design phase
(refer to "Cable routing" chapter for more information). In any case minimum required free space for proper
ventilation of the unit (near side fans) cannot be under 15 cm.
In case of manual installation (using handles) consider a free side space to lift the inverter of
60cm minimum. In case of installation with lifting equipments (eyebolts and ropes) the side
distances (C) could be reduced at the minimum required of 15 cm but a subsequent manual
lifting it will no longer be possible: in this case the lifting equipments must remain available on the
field for any subsequent operation.

Multiple units installation

OK OK
30 cm 30 cm
PVS-120 PVS-120
NO
PVS-120
OK
30 cm
PVS-120
• The vertical installation of two inverters positioned back to back is also permitted on a structure which must
be composed of a 2 or 3 frame supports (refer to "Mounting with a support bracket" chapter). In this case
the minimum recommended distance between the units in order to avoid the use of an air deflector is 30cm.

Wireless signal environmental checks

• The inverter can be commissioned and monitored using the wireless communication channel. The WLAN board of the inverter uses radio waves to transmit
and receive data, it is therefore important to find a new position for the router considering the different materials which the radio signal will have to pass through:
Material
Open field
Wood / Glass
Stone / Plywood
Reinforced concrete
Metal
Final installation of the inverter must not compromise access to any externally located disconnection devices.
Please refer to the warranty terms and conditions to evaluate any possible warranty exclusions due to improper installation.
15
cm
4A
4B
4C
1D 4D
6A
6B
6C
6D
OK
PVS-120
• In case of multiple installation of units, position the inverters side by side paying attention to keep the minimum
clearance distances (measured from the outer edge of the inverter) for each inverter.
NO
PVS-120
OK
PVS-120
Relative signal reduction
0% (strength of approximately 40 meters)
From 0 to 10%
From 10 to 40%
From 60 to 90%
Up to 100 %
50
cm
4A
4B
4C
1D 4D
6A
6B
6C
6D
- 7 -
MINIMUM CLEARANCE DISTANCES
A
C
PVS-120
B
MINIMUM CLEARANCE REAR DISTANCE
(ONLY FOR HORIZONTAL INSTALLATION)
D
C C
PVS
30 cm
1D
EN
C
4A
4B
4C
4D
6A
6B
6C
6D