Carbolite CTF Series Manual do Utilizador descarregar pdf (Página 12)

MTF, CTF

12 MF03 3.13

7.0 CIRCUIT DIAGRAMS

Safety Switches type A: a 2-pole Heater Switch is fitted directly in the element circuit in models

up to 16A rating.

Safety Switch type B: a Heater Switch is fitted into the contactor coil circuit in models over 16A.

7.1 Single Phase

7.2 2-phase with neutral

As 3-phase, with phase L3 not present, and with two SSRs and element circuits. In models up to

25A safety switches type A are fitted in the L1 and L2 circuits instead of type B in the contactor

coil circuit.

7.3 3-phase with neutral

note on 3-phase: depending on filter(s) fitted, there may be 3

separate neutral wires from the elements to the neutral supply.

(s)

Instrument Switch

coil

temperature

controller

overtemp.

controller

safety

switch

SSR

heat

SSR

heat

Filter (if fitted)

if fitted

thermocouple

contactor

Instrument Switch

coil

temperature

controller

thermocouple

overtemp.

controller

thermocouple

safety

switch B

SSR

(s)

heat

safety

switches A

Filter

(if fitted)

contactor

if fitted

1 2 ... 7 8 9 10 11 12 13 14 15 16

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