Acer AT2605 Manual do Utilizador descarregar pdf (Página 41)

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Inside enclosure

near power

14.4

Outside enclosure

near power

14.1

Panel surface

27.4

Button

2.9

Ambient (ºC)

23.8

Winding temperature rise measurements

Ambient temperature t1 (

C) .................................. :

—

Ambient temperature t2 (

C) .................................. :

—

13.1 TABLE: Clearances and creepage distances in accordance with 13.2

clearance cl and creepage

distance dcr at/of:

(V)

U r.m.s.

(V)

required cl

(mm)

required

dcr (mm)

dcr

(mm)

Hazardous live components

(with 2N)

→

earthed metal

chassis

420 250

2.0

↓

2.5

↓

HS1 → metal chassis

7.1

Primary HS1 top → metal

chassis

7.7

Hazardous live trace

→

earthed metal chassis

420 250

2.0

↓

2.5

↓

Primary trace → metal

chassis

8.0

Hazardous live trace

→

secondary trace

420 250

4.0

↓

5.0

↓

Primary trace →

Main board

trace

21.6

Notes:

1. Internal wires were fixed on PCB by quick connector. Also used cable tie, hook and PVC tube to keep the

double insulation to Hazardous live parts.

2. Cl and cr. in the SPS was already considered during the component approval.

14 TABLE: list of critical components and materials

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 53 54

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