Selection Guide. HHD-BPT, DIN Style, Current-Limiting, Back-Up, Potential Transformer Protection

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1 HHD-BPT Selection Guide HHD-BPT, DIN Style, Current-imiting,, Potential Transformer Protection Current ratings [A]; 0.5, 1, 2, 2.5, 3.15, 4, 5 E=192mm Page E=292mm Page E=367mm Page E=442mm Page E=537mm Page 3 / 7.2kV / 12kV / 17.5kV / 24kV / 36kV kV kV

2 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 3/7.2kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=192mm/292mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=192mm W/O Striker / / / / / / / E-192mm With 80N Striker / / / / / E=292mm With 80N Striker / / / / / Article Description E=192mm E=292mm Page(s) Fuse Base, Indoor Fuse Base, Outdoor Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

3 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 6/12kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=192mm/292mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=192mm W/O Striker / / / / / / / E-192mm With 80N Striker / / / / / E=292mm W/O Striker / / / / / / / E=292mm With 80N Striker / / / / / Article Description E=192mm E=292mm Page(s) Fuse Base, Indoor Contact SIBA Fuse Base, Outdoor Contact SIBA Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

4 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) /17.5kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=192mm/292mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=192mm W/O Striker / / / / / / / E-192mm With 80N Striker / / / / / E=292mm W/O Striker / / / / / / / E=292mm With 80N Striker / / / / / Article Description E=192mm E=292mm Page(s) Fuse Base, Indoor Contact SIBA Fuse Base, Outdoor Contact SIBA Contact SIBA 99 Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

5 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) /17.5kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=292mm/367mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=292mm W/O Striker / / / / / / / E-292mm With 80N Striker / / / / / E=367mm W/O Striker / / / / / / / E=367mm With 80N Striker / / / / / Article Description E=292mm E=357mm Page(s) Fuse Base, Indoor Contact SIBA 98 Fuse Base, Outdoor Contact SIBA Contact SIBA 99 Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

6 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) /24kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=292mm/442mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=292mm W/O Striker / / / / / / / E-292mm With 80N Striker / / / / / E=442mm W/O Striker / / / / / / / E=442mm With 80N Striker / / / / / Article Description E=292mm E=442mm Page(s) Fuse Base, Indoor Fuse Base, Outdoor Contact SIBA Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

7 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 20/36kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=292mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=292mm W/O Striker / / / / / / / E-292mm With 80N Striker / / / / / Article Description E=292mm Page(s) Fuse Base, Indoor Contact SIBA 98 Fuse Base, Outdoor Contact SIBA 99 Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

8 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 20/36kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=442mm/537mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=442mm W/O Striker / / / / / / / E-442mm With 80N Striker / / / / / E=537mm W/O Striker / / / / / / / E-537mm With 80N Striker / / / / / Article Description E=442mm E=537mm Page(s) Fuse Base, Indoor Contact SIBA Fuse Base, Outdoor Contact SIBA Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

9 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 38.5kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=537mm Current D Breaking Breaking I 2 t I 2 t oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=537mm W/O Striker / / / / / / / E-537mm With 80N Striker / / / / / Article Description E=537mm Page(s) Fuse Base, Indoor Contact SIBA 98 Fuse Base, Outdoor Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

10 HHD-BPT HHD-BPT High Voltage Current-imiting Fuses Standard(s) 40.5kV - Rated Voltage For Potential Transformers(PT) DIN IEC Class VDE Size E=537mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U(Min) 0.87U n (Max) E=537mm W/O Striker / / / / / / / E-537mm With 80N Striker / / / / / Article Description E=537mm Page(s) Fuse Base, Indoor Contact SIBA 98 Fuse Base, Outdoor Clips Clips w/connecting Bar Microswitch fittings 250mm , 660mm - 301, 900mm , 1200mm

11 1A 2A 2,5A 3,15A 4A 5A HHD-BPT HHD-BPT Time-Current Characteristics - Average Melting Cut-Off Current Diagram Current-imiting,, 3/7.2kV kV, (0.5A - 5A ) 30xxx ; xxx = 002, 004, 006, 008, -, 119, 176, 179, 180, 181, 221, 255, 282, 337, xxx13.2-5; xxx = 002, 004, 006, 008, 098, 119, 176, 179, 180, 181, 221, 255, 282, 337, 340 Average Melting 4 3 Virtual Pre-arcing time - [s] s ,5A A R.M.S. Prospective Current [A] Cut-Off Current ka Cut-Off Current - Peak [ka] A 4A 3,15 A 2,5 A 2A 0,5A 1A g ka Prospective Short Circuit Current [ka] - (Symmetrical r.m.s.) 83

12 HHZ-BPT HHZ-BPT High Voltage Fuses Special Purpose Application Range Types Fuses for Protection of Potential Transformers(PT) SIBA HHZ-BPT series of special purpose fuses are current-limiting class for the protection of potential transformers (PT) based on SIBA s own Company Standard. These specially designed fuses have excellent current-limiting properties with the capability of isolating the faulty potential transformer in a matter of milliseconds from the grid. The fuses are available in 6/12kV, /17.5kV, 20/36kV and 20/36kV, have current ratings from 1A 5A without strikers, available in two diameters, 24mm and 39.6mm with body lengths commensurate to the rated voltage. The first criteria is the system operating voltage, the rated voltage of the fuse must exceed the system operating voltage. Under normal operating conditions, the voltage transformer s load current is usually much less than 1A. The fuse is selected to withstand worst case transients. The transient currents (such as inrush during energizing) should be plotted on the fuses TCC (Time Current Characteristic) curve for determining discrimination. A discrimination safety margin of 1:2 is recommended to avoid nuisanse tripping. NEW - E-Rated fuses per IEEE C Contact SIBA 134

13 HHZ-BPT Selection Guide HHZ-BPT, Current-imiting,, Potential Transformer Protection(PT) Current ratings [A]; 1, 2, 3, 4, 5 =mm Page =195mm Page =220mm Page =340mm Page =359mm Page 3/7.2kV /12kV /17.5kV /24kV /36kV =359mm Page =440mm Page NEW - E-Rated fuses per IEEE C , 0.5E - 7E, 2.4kV- 7.2kV and 8.3kV KV, 80kAIR - Contact SIBA Current ratings [A]; 0.5E, 0.75E, 1E, 2E, 3E, 4E, 5E, 7E =mm Page =195mm Page =340mm Page =359mm Page 2.4/7.2kV E E - 7E 8.3/17.5kV E - 7E D 20mm 135

14 HHZ-BPT HHZ-BPT High Voltage Current-imiting Fuses Standard(s) 3/7.2kV - Rated Voltage For PT Transformers Company without Striker Standard Class Size = mm/195mm/220mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U n (Max) = mm / / / = 195mm / / / = 220mm / / / / / Article Description Article Part Number Page(s) Fuse Clips D[in/mm] 0.94 / 24 Terminal Bar for Fuse Clips Fuse Clips D[in/mm] 1.56 / 39.6 Terminal Bar for Fuse Clips Fuse Base Contact SIBA Ø 24 Ø

15 HHZ-BPT HHZ-BPT High Voltage Current-imiting Fuses Standard(s) 6/12kV - Rated Voltage For PT Transformers Company without Striker Class Standard Size = 195mm/220mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U n (Max) = 195mm / / / = 220mm / / / / / Article Description Article Part Number Page(s) Fuse Clips D[in/mm] 0.94 / 24 Terminal Bar for Fuse Clips Fuse Clips D[in/mm] 1.56 / 39.6 Terminal Bar for Fuse Clips Fuse Base Contact SIBA Ø 24 Ø

16 HHZ-BPT HHZ-BPT High Voltage Current-imiting Fuses Standard(s) /17.5kV - Rated Voltage For PT Transformers Company without Striker Class Standard Size = 220mm/340mm/359mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U n (Max) = 220mm / / / = 340mm / / / / / = 359mm / / / New kV E-Rated Fuse - Contact SIBA 1.56 / 39.8mm / 327mm 1.20" / 30.5mm Article Description Article Part Number Page(s) Fuse Clips D[in/mm] 0.94 / 24 Terminal Bar for Fuse Clips Fuse Clips D[in/mm] 1.56 / 39.6 Terminal Bar for Fuse Clips Fuse Base Contact SIBA Ø 24 Ø

17 HHZ-BPT HHZ-BPT High Voltage Current-imiting Fuses Standard(s) /24kV - Rated Voltage For PT Transformers Company without Striker Standard Class Size = 340mm/359mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U n (Max) = 340mm / / / / / = 359mm / / / Article Description Article Part Number Page(s) Fuse Clips D[in/mm] 0.94 / 24 Terminal Bar for Fuse Clips Fuse Clips D[in/mm] 1.56 / 39.6 Terminal Bar for Fuse Clips Fuse Base Contact SIBA Ø 24 Ø

18 HHZ-BPT HHZ-BPT High Voltage Current-imiting Fuses Standard(s) 0/36kV - Rated Voltage For PT Transformers Company without Striker Standard Class Size = 359mm/440mm Current D Breaking Breaking I 2 t I 2 oss Resistance I n Current I 1 Current I U n (Max) = 359mm / / / = 440mm / / / Article Description Article Part Number Page(s) Fuse Clips D[in/mm] 0.94 / 24 Terminal Bar for Fuse Clips Fuse Clips D[in/mm] 1.56 / 39.6 Terminal Bar for Fuse Clips Fuse Base Contact SIBA Ø 24 Ø

19 1A 2A 3A 5A 4A 1A 2A 3A 5A 4A HHZ-BPT 4 HHZ-BPT Time-Current Characteristics - Minimum Melting and Total Clearing Cut-Off Current Diagram Current-imiting,, 3kV kV (0.5A - 5A) Minimum Melting 30xxx11.1-3; xxx = 375, 377, 378, 379, 380, 381, 383, xxx11.1-5; xxx = 371, 372, 373, Total Clearing H _0 H _0 3 3 s Virtual Pre-arcing time - [s] s A R.M.S. Prospective Current [A] -1 Cut-Off Current A H _0 ka Cut-Off Current - Peak [ka] A 4A 3A 2A 1A ka Prospective Short Circuit Current [ka] - (Symmetrical r.m.s.) 141

20 HHZ-BPT HHZ-BPT Fuse Clips for 24mm and 40mm Diameter Contacts Dimensions [ in / mm] A B 0.67 / / / / / / 3.5 C D D 1 D 2 E E 1 E / / / 3.0 / M4 / M / / 0.8 F F / / / / / / 12.5 F 2 G H I K 0.31 / / / / / / / / / / / / 25.0 A B C D E F G I J / / / 3.0 / M / / / Fuse Clips for 40mm Diameter Contacts Dimensions [ in / mm] / 35.0 A 0.98 / 25.0 B 2.17 / 55.0 C 0.33 / 8.5 D / 5.1 D / 1.5 F 0.49 / 12.5 G 0.31 / / / 35.0 G 1 G 2 I J / / / / / / / /

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