Description
24 Revision 03 * INSTALLATION AND OPERATING INSTRUCTIONS 8DJH * 500-8067.9
7.5 HV HRC fuse assembly
Features • HV HRC fuse-links according to DIN 43 625 (main dimensions) with striker in "medium"
version according to IEC/EN 60 282-1
- As short-circuit protection before transformers,
- with selectivity to upstream and downstream connected equipment
- 1-pole insulated
• Requirements according to IEC 62 271-105 / VDE 067-105 fulfilled by combination of
HV HRC fuses with the three-position switch-disconnector
• Thermal striker tripping when the corresponding HV HRC fuse-link is used
• Climate-independent and maintenance-free, with fuse boxes made of cast resin
• Arrangement of fuse assembly below the switchgear vessel
• Fuse assembly connected to the three-position switch-disconnector via welded-in
bushings and connecting bars
• Fuses can only be replaced if feeder is earthed
• Option: "Tripped indication" of the HV HRC fuse of the transformer switch for remote
electrical indication with 1NO contact
Fig. 11: Signaling switch in manual operating mechanism
a
1 NC contact wired to terminal
s
1 NO contact wired to terminal
Fig. 12: Signaling switch in motor operating mechanism
a
1 NC contact for de-energizing
s
1 NO contact wired to terminal
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