Carbolite HTF Series - Manual (Page 14)

RHF & HTF
14
MF22 3.09
8.0 F USES & P OWER C ONTROL
8.1 Fuses
F1-F2: Refer to the circuit diagrams.
F1
Internal supply
fuses Fitted if supply cable fitted.
GEC Safeclip of the type shown
(glass type F up to 16A)
F2
Auxiliary
circuit fuses 2 Amps glass type F
32mm x 6mm
F3
Heat Light
fuses 2 Amps glass type F
32mm x 6mm
Thyristor Fuse Ferraz Protistor of the rating
shown
Customer
fuses Required if no supply cable fitted.
Recommended if cable fitted. See rating label for amperage; see
table below for fuse rating.
The table below gives the fuse rating for the various models.
8.2 Power Control
The setting for the power limit parameter in the controller ( OP.Hi ) should be 100% for all models.
The thyristor stacks are set to the secondary (element) maximum currents given in the table.
TABLE OF FUSE AND CURRENT LIMIT VALUES
Model Phases volts supply fuse
rating
type
thyristor
fuse
rating current
limit
(element
circuit)
RHF 17/25 3-phase + N 380/220-415/240 25A NS25 30A 150A
RHF 17/25 3-phase delta 208, 220-240 40A ES40 30A 150A
HTF 18/15 1-phase 220-240 50A ES50 50A 150A
HTF 18/15 3-phase + N 380/220-415/240 15-16A type F1 20A 150A
HTF 18/15 3-phase delta 220-240 30-32A NS32 50A 150A
HTF 18/27 3-phase + N 380/220-415/240 30-32A NS32 50A 160A
HTF 18/27 3-phase delta 220-240 63A ES63 50A 160A