Danfoss VLT 8000 AQUA Guía de instalación descargar pdf (Pagina 9)

VLT® 8000 AQUA

Installation

■ High voltage test

A high voltage test can be carried out by short-circuiting

terminalsU,V,W,L

and L

and energizing

by max. 2.5 kV DC for one second between

this short-circuit and the chassis.

NOTE

The RFI switch must be closed (position ON)

when high voltage tests are carried out . The

line and motor connection must be interrupted

in the case of high voltage tests of the total installation

if the leakage currents are too high.

■ Heat emission from VLT 8000 AQUA

ThetablesinGeneral technical data show the

power loss P

(W) from VLT 8000 AQUA. The

maximum cooling air temperature t

IN, MAX

is 40° C

(104° F) at 100% load (of rated value).

■ Ventilation of integrated VLT 8000 AQUA

The quantity of air required for cooling AFD

can be calculated as follows:

1. Add up the values of P for all the AFDs to be

integrated in the same panel.

The highest cooling air temperature (t

) present

must be lower than t

IN, MAX

40° C (104° F).

The day/night average must be 5°C (9° F) lower.

The outlet temperature of the cooling air must

not exceed: t

OUT, MAX

45° C (113° F).

2. Calculate the permissible difference between

the temperature of the cooling air (t

)and

its outlet temperature (t

OUT

t= 45° C (113° F) -t

3. Calculate the required

Insert t in Kelvin

The outlet from the ventilation must be placed

above the highest-mounted AFD.

Allowance must be made for the pressure loss

across the filters and for the fact that the pressure

is going to drop as the filters are choked.

MG.80.A6.22 - VLT is a registered Danfoss trademark

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 40 41

VLT® 8000 AQUA 1

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Danfoss VLT 8000 AQUA Guía de instalación Pagina 9

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