J. T. Eaton Liquid-Cooled Drives LCX9000 - Manual (Page 38)

LCX9000 Liquid-Cooled Drives User Manual
2-16 For more information visit: www.EatonElectrical.com MN04005001E
January 2007
Table 2-12: Pressure Losses — CH7x
Figure 2-16: Pressure Loss — CH7x
It is strongly recommended that the liquid carrying hoses from the network to the cooling
elements of the drive are electrically non-conducting (to avoid electrical short circuits if the
hose touches live parts). To avoid electrochemical corrosion, we also recommend adding an
inhibitor (e.g. Ferrolix 332/Henkel, Cortec VpCI-649l) in the cooling liquid.
The following main line hose materials are acceptable:
● plastic (PVC)
● rubber (EPDM only)
● aluminium
● other stainless and acid-proof materials
The hoses must tolerate a peak pressure of 580 psi (40 bar).
Connect the line hose to its counterpart (screw connector or fast connector) on the cooling
element of the drive/inverter. The coolant inlet connector is the one closer to the mounting
plate and the outlet connector is the one closer to the face of the drive, see Figure 2-18. Due
to high pressure in the line hose, it is recommended that the liquid line is equipped with a
shut-off valve, which makes the connection easier. In order to prevent water from spraying in
the installation room, Eaton also recommends wrapping e.g. linters around the connection
during installation.
Eaton also recommends equipping the pipe branches to the cooling elements with valves.
CH7x (16) with standard 1.5m hoses and optional fast connectors TEMA
Volume
Flow
Rate
(GPM)
Pressure
Loss
TEMA
Inflow
(psi)
Pressure
Loss
Inflow
Hose (psi) Pressure
Loss
Element
(psi) Pressure
Loss
Outflow
Hose (psi) Pressure
Loss TEMA
Outflow
Hose (psi)
Pressure Loss
Total Inflow
Hose, Element
and Outflow
Hose (psi)
Pressure Loss Total
TEMA, Inflow and
Outflow Hoses and
Element (psi)
10.57 8.85 4.35 4.06 4.06 7.25 12.62 28.57
7.93 4.50 2.47 2.47 2.23 3.77 7.25 15.52
5.28 1.60 1.31 1.16 1.02 1.45 3.48 6.38
Pressure Loss, psi
Vo
lu
me
F
lo
w
R
a
te
, GPM
Pressure loss; TEMA ,
inflow (SET-SEL) (bar)
Pressure loss; inflow
hose (SEL-SEE) (bar)
Pressure loss;
element (SEE-PEJ)
Pressure loss; outflow
hose: (PEJ-PLJ) (bar)
Pressure loss; TEMA ,
outflow (PLJ-PTJ)(bar)
Pressure loss total
(inflow hose, element
and outflow hose)
Pressure loss total
(
TEMA , inflow and
outflow hoses and
element)
Legend
2.5
5.0
7.5
10.0
12.5
0.00 5.00 10.00 15.00 20.00 25.00 30.00