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PHISICAL PROTECTIONS
PROTECTION FUSE FOR EXCITATION FIELD
The F1 fuses are used to interrupt the input current in order to reduce damage if a short circuit
occurs, protecting the generator field as well as the power circuit. The figure 16 shows the position
of the fuse.
The GRTD-TH3 has a half-wave rectifier, the input current is the same as the field current. The fuse
used is 10A with a fast acting feature to protect the equipment.
The fus eis sized according to the excitation current:
➢ Operation in 3A is recommended to use the 3.15A fuse;
➢ Operation in 5A é recommended to use the 5A fuse;
➢ Operation in 7A é recommended to use the 7A fuse;
➢ Operation in 10A é recommended to use the 10A fuse;
Fuse supplied with GRTD-TH3: Manufacturer: Littelfuse (PartNumber: 0217010.MXP)
Features: fast acting; Dimensions: 5x20 mm; Current/Voltage: 10A / 300V. Time to open:
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