Fuses & Power Control - Carbolite RHF 17/3 Installation, Operation & Maintenance Instructions Manual

8.0 F & P
USES OWER
8.1 Fuses
F1-F2: Refer to the circuit diagrams.
F1 Internal supply
fuses
F2 Auxiliary
circuit fuses
F3 Heat Light
fuses
Thyristor Fuse
Customer
fuses
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 (
The thyristor stacks are set to the secondary (element) maximum currents given in the table.
Model Phases
RHF 17/3 1-phase
RHF 17/10 1-phase
RHF 17/25 3-phase + N
RHF 17/25 3-phase delta
HTF 18/3 1-phase
HTC 18/8 1-phase
HTF 18/15 1-phase
HTF 18/15 3-phase + N
HTF 18/15 3-phase delta
HTF 18/27 3-phase + N
HTF 18/27 3-phase delta
MF22
C
ONTROL
Fitted if supply cable fitted.
Required if no supply cable fitted.
Recommended if cable fitted.
TABLE OF FUSE AND CURRENT LIMIT VALUES
volts
208, 220-240
208, 220-240
380/220-415/240
208, 220-240
220-240
220-240
220-240
380/220-415/240
220-240
380/220-415/240
220-240
GEC Safeclip of the type shown
(glass type F up to 16A)
2 Amps glass type F
32mm x 6mm
2 Amps glass type F
32mm x 6mm
Ferraz Protistor of the rating
shown
See rating label for amperage; see
table below for fuse rating.
OP.Hi
) should be 100% for all models.
supply fuse thyristor
rating type fuse
rating
20A NS20 30A
40A ES40 50A
25A NS25 30A
40A ES40 30A
30-32A NS32 50A
40A ES40 50A
50A ES50 50A
15-16A type F1 20A
30-32A NS32 50A
30-32A NS32 50A
63A ES63 50A
1700-1800° Chamber
current
limit
(element
circuit)
60A
90A
150A
150A
150A
150A
150A
150A
150A
160A
160A
15