Limitor -G General Purpose Fuses

Transcription

1 Limitor -G General Purpose Fuses HIGH VOLTAGE IEC FUSES DIN HV GENERAL PURPOSE FUSES FOR TRANSFORMERS FEATURES & BENEFITS Mersen HV fuse-links have been used for reliable protection in high-voltage switchgear and controlgear and high-voltage systems for decades. Limitor -G HV fuses are general purpose fuses as defined in the IEC standard and dedicated to protect transformers against effects of short-circuit currents and low overcurrents. To guarantee high quality, Mersen uses the best materials: fuse-elements are in pure silver, caps are in copper coated with silver and bodies are in ceramic. TECHNICAL DATA /24kV 442mm 6/12kV 292mm Rated current A A Rated voltage range U n /24 kv 6/12kV Rated voltage of transformer 20 kv kv Package 1 1 High breaking capacity High current limitation Low switching voltage Quick breaking Non-ageing Energy efficency New cap design for a better compatibility with all types of clips and easier assembly Coordination with IEC 60787, IEC and VDE 0670 T303 APPLICATIONS HV Transformer protection STANDARDS IEC VDE 0670 part 4 DIN EP.MERSEN.COM 1

2 PRODUCT RANGE Rated voltage / 24 kv, length 442mm with striker Catalog number Item number Rated current In Clearing I²t at Rated Voltage Breaking capacity I1 Cold resistance R20 (+/-%) Power dissipation at In Ø78mm 45DG240VP E00159 A 3.6 ka²s 40 ka 135 mω 15 W 45DG240V16P F A 14 ka²s 40 ka 70.3 mω 21 W Ø88mm 45DG240V25P G A 39 ka²s 40 ka 41.2 mω 31 W Ø78mm 45DG240V4P C A 1.8 ka²s 40 ka 280 mω 5 W 45DG240V6,3P D A 2 ka²s 40 ka 256 mω 11 W Rated voltage 6 /12 kv, length 292mm with striker Catalog number Item number Rated current In Clearing I²t at Rated Voltage Breaking capacity I1 Cold resistance R20 (+/-%) Power dissipation at In Ø65mm 45DG120VP X00152 A 3.8 ka²s 40 ka 70 mω 8 W 45DG120V16P Y A 14 ka²s 40 ka 35 mω W 45DG120V25P Z A 36 ka²s 40 ka 20.5 mω 15 W Ø78mm 45DG120V40P A A 1 ka²s 40 ka 12.2 mω 24 W Ø88mm 45DG120V50P B A 150 ka²s 40 ka 9.9 mω 31 W Ø65mm 45DG120V6,3P W A 2 ka²s 40 ka 128 mω 6 W EP.MERSEN.COM 2

3 TIME CURRENT CHARACTERISTIC CURVES Limitor G 6-12kV 000 t[s] Actual pre-arcing time (s) ,1 0,01 0,001 6, I [A] RMS value of prospective current (A) +/- 8% EP.MERSEN.COM 3

4 TIME CURRENT CHARACTERISTIC CURVES Limitor G -24kV 000 t[s] 4 6, Actual pre-arcing time (s) ,1 0,01 0,001 6, I [A] RMS value of prospective current (A) +/- 8% EP.MERSEN.COM 4

5 CUT-OFF CURRENT CHARACTERISTIC Limitor G 6-12kV Maximum peak let thru current Ic (A) 50 Hz RMS symmetrical prospective current Ip (A) EP.MERSEN.COM 5

6 CUT-OFF CURRENT CHARACTERISTIC Limitor G -24kV 0000 i d [A] prospective current Ik Ik I r [A] Maximum peak let thru current Ic (A) , I K '' [A] Hz RMS symmetrical prospective current Ip (A) EP.MERSEN.COM 6

7 DIMENSIONS Ø d e Ø 45 ± 1 Ø 15 Ø d e = length see Product range table Dimensions in mm Rated voltage Article Number 6 / 12kV W / 12kV X / 12kV Y / 12kV Z / 12kV A / 12kV B / 24kV C / 24kV D / 24kV E / 24kV F / 24kV G e d EP.MERSEN.COM 7

8 SELECTION TABLE Relative short-circuit voltage Uk = 4% Uk = 5% Rated voltage range of fuse-link [kv] Service voltage of transformer [kv] Transformer output [kva] Transformer rated current [A] 6 / 12 / Rated current of fuse-link [A] Transformer rated current [A] Rated current of fuse-link [A] EP.MERSEN.COM 8