Description
32/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
• Cable-type current transformer
- Inside diameter of transformer 56 mm
- Max. usable height 170 mm
Electrical data of current transformer type 4MC
9.8 HV HRC fuse assembly
Features • With fuse slide for fuse replacement without tools
• HV HRC fuse-links according to DIN 43625 (main dimensions) with striker in "medium"
version according to IEC 60282-1
- as short-circuit protection before transformers or motors,
- with selectivity to upstream and downstream connected equipment,
- 1-pole insulated
• Reference dimension e of the fuse-links
- Ur = 12 kV: e = 292 mm (option e = 442 mm)
- Ur = 24 kV: e = 442 mm
• Requirements according to IEC 62271-105 / VDE 0671-105 met for HV HRC fuse-links in
combination 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 the HV HRC fuse assembly underneath the switching-device vessel
• HV HRC fuse assembly connected to the three-position switch-disconnector / vacuum
contactor via welded-in bushings and connecting bars
Operating voltage max. 0.8 kV
Rated short-duration power- frequency withstand
voltage (winding test)
3 kV
Rated frequency 50/60 Hz
Rated continuous thermal current 1.0 / 1.2 / 1.33 / 1.5 / 2.0 x rated current (primary)
Rated short-time thermal current, max. 3 s 31.5 kA
Rated current dynamic unlimited
primary 40 A to 2500 A
secondary 1 A and 5 A
Multiratio (secondary) 200 - 100 A to 2500 - 1250 A
Core data dependent on rated primary current max. 3 cores
Measuring core Rating 2.5 VA to 30 VA
Class 0.2; 0.5; 1
Overcurrent
factor
FS5, FS10
Protection core Rating 2.5 VA to 30 VA
Class 5P or 10P
Overcurrent
factor
10 to 30
Permissible ambient air temperature max. 60 °C
Insulation class E
①
Bushing
②
Switchgear vessel
③
Sealing cover with seal
④
Tripping pin for spring-operated/
stored-energy mechanism
⑤
Striker of the HV HRC fuse-link
and articulation for tripping the
spring-operated/stored-energy
mechanism
⑥
HV HRC fuse-link
⑦
Fuse box
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