J. T. Eaton LCX9000 user manual 12 Pressure Losses - CH7x, 16 Pressure Loss - CH7x, 2-16

LCX9000 Liquid-Cooled Drives User Manual

January 2007

Table 2-12: Pressure Losses — CH7x

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	Pressure
Loss	Loss TEMA
Outflow	Outflow
Hose (psi)	Hose (psi)

Pressure Loss
Total Inflow	Pressure Loss Total
Hose, Element	TEMA, Inflow and
and Outflow	Outflow Hoses and
Hose (psi)	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
	12.5								Legend
									Pressure loss; TEMA,
GPM									inflow (SET-SEL) (bar)
	10.0								Pressure loss; inflow
									hose (SEL-SEE) (bar)
Rate,									Pressure loss;
									element (SEE-PEJ)
Flow
	7.5								Pressure loss; outflow
Volume									hose: (PEJ-PLJ) (bar)
	5.0								Pressure loss total
									Pressure loss; TEMA,
									outflow (PLJ-PTJ)(bar)
									(inflow hose, element
									and outflow hose)
									Pressure loss total
	2.5								(TEMA, inflow and
	0.00		5.00	10.00	15.00	20.00	25.00	30.00	outflow hoses and
									element)
					Pressure Loss, psi

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.

2-16 For more information visit: www.EatonElectrical.com MN04005001E