CDA HCE340 for Manual de Serviço descarregar pdf (Página 20)

Cable plans

Dimensioning of cable and fuses

The electrician installing the unit is responsible for ensuring

that all sizes used are compatible with current legislation and

regulations.

The VEX340 heat recovery unit has a built-in isolation switch

and automatic fuses for overload and short-circuit protection.

The HCE electric heating coil has a built-in isolation switch

and the control system has short-circuit protection. HCE

internal cables and heating element have short-circuit

protection, via a fuse in the distribution board (not supplied

by EXHAUSTO).

Maximum short circuit current (lcu), in accordance with

EN60947.2 is 10 kA.

Maximum fuse rating is 63 A gG/gL.

Accessory types HCW, CCW and XCU do not require separate

supply cables and can be directly connected to the VEX340

control system box. Terminals (U1, N) may only be used with

the above mentioned accessories, and can have a maximum

load of 1.8 A.

A maximum of one HCW (heating coil) and one CCW/XCU

(cooling) can be connected. The EXact control prevents both

operating at the same time.

HCE-type accessories must have a separate power supply.

Maximum phase current is the dimensioned current for choice

of cable.

Equalising connections

Equalising connections must be established between the VEX

and HCE-type accessories.

Fitting of earth leak circuit breakers

If earth leak circuit breakers are  tted, they must meet the

following standards:

a) PFI breaker type A, as per EN61008, which breaks the

circuit when leakage-current is registered with DC content

(pulsating DC).

b) Cutout time must be max. 0.3 s.

The current leakage can be up to 300 mA.

VEX340 without external heating coil

Size

Current

(V)

Fuse for control system

(1 x 230 V) 2 pole

Generel fuse for FC1 and FC2

(1 x 230 V) 2 pole

Total number

of fuses

VEX340

1 x 230 V + N + PE

10 A

13 A

Automatic built in fuses VEX340

FC1 = Frequency converter 1 FC2 = Frequency converter 2

VEX340: General

1 2 ... 15 16 17 18 19 20 21 22 23 24

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