Special Purpose Fuses

Transcription

1 Special Purpose Fuses Multimeter fuses Metering Fuses Telecom fuses NH 80V Fuses for DC voltage applications NH am 00V a.c. NH gg 0V a.c. Safe work fuses SWF Fuses for protection of forklift batteries TRB Surge suppression fuses SRF Fuses for high voltage switchgear ETI Elektroelement d.d. Obrezija 5, SI Izlake Slovenija Tel Faks eti@eti.si

2 MULTIMETER Fuse Links General characteristics Rated voltage 00V a.c./d.c. Breaking capacity 30kA a.c./d.c. Characteristics gr Standards IEC 09-, UL 8-1,UL 8-13 UL certificate Nr. E33 Application Multimeter fused CH MULTI x38 Code No. standard indicator Power dissipation [W] , , , ,8 0050, , , ,15 /500 FUSED

3 Metering Fuse Link gg NV/NH 00V a.c. General characteristics Rated voltage 00V a.c. Breaking capacity 50kA a.c. Standards IEC EN 09-1 Characteristic gg As metering fuse with strip fuse switch disconnector Aplication and fuse switch disconnetor NV/NH 00V a.c. 1 3 a standard indicator Power dissipation [W] , , , , , , / 500 1/1 00 1/

4 Metering Fuse Link gtr NV/NH 00V a.c. General characteristics Rated voltage 00V a.c. Breaking capacity 5kA a.c. Standards IEC EN 09-1 Characteristic gtr As metering fuse with strip fuse switch disconnector Aplication and fuse switch disconnector NV/NH 00V a.c. 1 3 a standard indicator Power dissipation [W] / 500 1/1 00 1/ dimensions [mm] a1 b1 c1 e1 G H a a a

5 Telecom Fuses FUSES FOR BATTERY AND UPS PROTECTION Why to protect a battery? ln case of a short circuit in the battery circuit or Uninterruptible Power Systems (UPS) DC systems, the short circuit could be fed by the battery with its full energy content. If the battery is not protected by an appropriate fuse or circuit breaker, this energy flow will not be interrupted in a short enough time. The typical result is a fire at the point of short circult, or the battery will burn due to heavy overload. How to protect a battery? ln practice there are two ways to protect a battery or UPS. First is to use special battery fuses with an instantaneous trip - those fuses will be presented in this article. Second possibility is to use a special DC-circuit breaker. The voltage and current ratings as well as the characteristics of these components depend on the system configuration. The following parameters have to be considered when choosing the FUSES for protection: Maximum battery current when in battery operation Maximum short circuit current of the battery - ageing of the battery has to be considered Length and cross-section of cables between the battery and the UPS module (positive and negative cables have to be summed together for the correct length) Protection device design depends on current (battery voltage dependent over time, maximum current with a discharged battery) and on current flow time Fast acting fuses have to be used (DZ, gf...). General purpose fuses (am, gg... ) are for most part not suitable The fuses have to be resistant to ageing in order to prevent premature operation under rated conditions Fuses must be replaced by others of the same type and size. For the most part, no current rating exists for the battery fuses. Fuse types vary by the manufacturer. If a mlniature circuit breaker (MCB) is used, the following additional parameters have to be considered: Use a DC DC circuit breaker With DC protection capability and DC trip unit Compare the needed trip characteristics Do not forget to set the trip current at the circuit breaker. Usually, the manufacturer sets the trip current to maximum. Therefore it must be adjusted correctly on site. Why have a battery-disconnect switch? It is very helpful to have an additional dlsconnect switch when using a fuse without disconnect posslbility. There are two reasons for a disconnect possibility: To have a different point of intersection between battery and UPS To isolate the battery during service and maintenance work Guideline, due to experience Many damage events that happened in the last few years demand some design reviews of existing installations. The reasons for these reviews turned out to be: Use of AC circuit breakers Use of AC circuit breakers with DC switching capability, but with an AC trip unit Not adjusted trip setting Battery short circuit current was lower than possible trip setting Due to this experience all UPS systems have been designed with special battery fuses (supplier ETI). This fuse is usually selected by the battery or fuse supplier. Conclusion Always use a special fuse which is designed for the selected battery and system configuration Always ask battery and fuse supplier for advice ETI solution for TELECOM Power Supply Circuits ETI d.d. developed specially designed fuse-iinks for short circuit protection of d.c. telecom power supplies. They are typically installed into rectifier outputs, battery feeders or d.c.power distribution for protection of the load circuits. All their characteristics are optimized to correspond to the operating conditions of telecom power supply equipment. Power dissipations and switching voltage provide optimal function and protection of telecom power supplies. The ETI TELECOM NH00 fuse-iink is a high breaking capacity current Iimiting fuse-iink with pure silver, age-resistant melting element. 5

6 NH DC 80 V - Telecom fuse General characteristics Rated voltage 80 V d.c. (L/R = 0 ms) Breaking capacity 5 ka d.c. Standards IEC 09-1 Application Fuse-link for battery and UPS protection. NH DC 80 V - Telecom fuse 00 standard indicator Code No. striker indicator Power dissipation [W] , , , , , ,5 7 9,8 3/ ,5 8 Pre-arcing time [s] t v /s Time-current characteristics 50 A 00 A A 30 A 800 A 3 Prospective current I p /A

7 NH DC 50 V General characteristics Rated voltage 50 V d.c. (L/R = 0 ms) Breaking capacity 5 ka d.c. Standards IEC 09- Application Fuse-link for DC application. NH DC 50 V 00 standard indicator Code No. striker indicator Power dissipation [W] , , , , , , , ,5 8 7

8 NH DC 0 V General characteristics Rated voltage 0 V d.c. (L/R = 0 ms) Breaking capacity 50 ka d.c. Standards IEC 09- Application Fuse-link for DC application. NH DC 0 V Code No. Max. power 00 C 00 1 C 1 dissipation [W] C 7, 3/ ,1 3/ C 1,9 3/ ,3 3/ C D E 9,8 G type dimensions [mm] A B C D E F G H K 00 C , C H B K A F Time-current characteristics Pre-arcing time [s] t v /s 3 5 A 0 A 3 A 80 A 0 A 3 A 50 A 0 A 15 A 00 A 50 A A Prospective current I p /A

9 NV Telecom fuse disconnectors NV Telecom fuse disconnectors type Code No. HVL 00 Telecom 1P M1-M1, front connection, for striker HVL 00 Telecom 1P M1-M1, rear connection, for striker HVL 00 Telecom 1P M1-M1, front connection 0019 HVL 00 Telecom 1P M1-M1, rear connection Technical data for NV Telecom fuse disconnectors Technical Specifications HVL 00 Electrical Characteristics Rated conditional short-circuit current - ka eff 50 Utilization category I e A DC 0-B/800 A Rated impulse withstand voltage U imp kv 8 Operating cycles with current Total power loss at I th (without TM) O v W Fuse links to DIN Max. rated current (gg) A 800 Mechanical characteristics Operating cycles without current kg 0,75 Cable connection Flat terminal Bolt diameter - - s. drawings Cable lug (DIN 30) - mm 0 Flat bar - mm 30x Tightening torque M a Nm Type of protection Front side Operational state - - IP 0 Device fitted Front cover open - - IP Operating conditions Ambient temperature T u O C -5 to +55 Rated operating mode - - Continuous operation Actuation - - dependent manual operation Mounting position - - vertical, horizontal Altitude - m up to 000 Pollution degree Overvoltage category - III 9

10 Ø M1x xø M1x5

11 Fuse base U1-3 0V General characteristics Type U1-1/0 U-1/0 U3-1/0 Rated voltage 0V d.c. / a.c. Rated current 50A 00A 30A Conv. free air thermal current with fuse-links 00A 315A 30A Conv. free air thermal current with solid links 35A 50A 00A Max. permis. power dissipation per fuse-link 35W W 70W Cable Flat terminal Screw M M M terminal Cable lug 5-150mm 5-0mm 5-300mm (DIN 35) Flat termination 30xmmx-mm 30xmmx-mm 0xmmx-mm Rated torque 30-35Nm 30-35Nm 30-35Nm Terminal Clamping crosssection 5-5- KMG 300mm KMG 300mm Rated torque 3Nm 3Nm Degree of protection - Front side, device fitted IP00 IP00 IP00 Operating Ambient temperature* -5 0 C to C conditions Rated operating mode Continuous operation Actuation - Mounting position Vertical, horizontal Altitude Up to 000m Pollution degree 3 Overvoltage category III Insulation class C-VDE 01 Standards EN 09, IEC 09, DIN VDE 03, DIN 30, DIN 33 Fuse base U1-3 0V I Type n Code No. Max. connection [mm ] Mechanical fuse monitor U1-3/0/H without 500 U1-1/0/H without 550 U1-1/0/H/K with 00 U-1/0/H without 930 U-1/0/H/K with 00 U3-1/ without 0 U3-1/0/K with 150 * size 3 without insulating contact (H) ** type designation H means version with insulating contacts A Dimensions [mm] Type A B C D E F G H I K U1-3/0/H ,5 9 17,5 M U1-1/0/H ,5 9 17,5 M 87 U-1/0/H ,5 M 87 U3-1/ M H 30 C F G E D B K I 11

12 Fuse base PK1 General characteristics Rated voltage 00V d.c. Rated current 50A Insulation class C-VDE 01 Standards EN 09, IEC 09, DIN VDE 03, DIN 30, DIN 33 Fuse base PK1 Type Code No. PK1 DC / PK1 DC /30 Type Dimensions [mm] A B C D E F G H I J K M PK1 DC M Ø, PK1 DC M Ø,

13 Fuse base U1-1 00V General characteristics Rated voltage Rated current Conv. free air thermal current with fuse-links Conv. free air thermal current with solid links Max. permis. power dissipation per fuse-link Cable terminal - Flat terminal Screw Cable lug (DIN 35) Flat termination Rated torque 00V d.c. A A 35A 31W M mm 30x mmx-mm Nm Fuse base U1-1 00V Type Code No. Max. Connection (mm ) U1-1 00V

14 Fuse disconnector TL1-1/9/00V General characteristics Number of poles 1 Rated voltage 00V d.c. Rated current A Conv. free air thermal current with fuse-links A Utilization category DC-0B Fuse-links to DIN 30 1 Max. rated current (gl/gg) A Max. permis. power loss per fuse-link 5W Cable terminal Screw M - Flat terminal Cable lug (DIN 35) 5-0 mm Flat termination 30x mm Rated torque Nm Type of protection - front side, device fitted IP0, IP Operating Ambient temperature* -5 to +55 conditions Rated operating mode Cont. operation Actuation Dependent manual actuation Mounting position Vertical, horizontal Altitude up to 000 m Pollution degree 3 Overvoltage category III *35 0 C normal temperature, 55 0 C with reduced operating current Fuse disconnector TL1-1/9/00V Type Code No. Max. Connection (mm ) Terminal TL1-1/9/00V M , Ø., Ø.,

15 Fuse-link am NV/NH 00V a.c. General characteristics Rated voltage 00V a.c. Breaking capacity 5kA a.c. Standards VDE Characteristic am Application For equipment protection in mining industry. For relays, contactors and motors protection in case of short-circuit. 00V a.c. am 1 3 Standard indicator Pre-arcing Joule integral [A s] Operating Joule integral [A s] at 35V Operating Joule integral [A s] at 10V Power dissipation [W] /8 00 1/8 C 9,8 H E D G B A K F Dimensions [mm] A B C D E F G H K

16 Time-current characteristics Pre-arcing time (s) tv/s 3 3A 50A 0A 80A 50A 00A A 15A 00A 315A 500A Prospective current (A) Ip/A Cut-off characteristics I0/A 5 Ik Ik 500A 00A 315A 50A 00A 15A 0A 80A 3A 50A A Prospective fault current Ip/A 1

17 Fuse-link gg NV/NH 0 V a.c. General characteristics Rated voltage 0V a.c. Breaking capacity 50 ka a.c. Standards IEC 09 Characteristic gg 0V a.c. gg Standard indicator (pic.1) Striker indicator - K (pic.) Power dissipation [W] , , , , , , ,1 1XL , , , , , , , , , , , , , XL , , , , , , , , , , , ,0 3L , , , , , ,

18 Picture 1 Picture 7,5 1 R B P C G 19 A E Dimensions [mm] A B C E G P R M O 1XL ,5 0,5 13, XL ,3 1, L , 17, NV 0V a.c. gg I/t characteristics

19 Safe work fuses Fuse links SWF ETI offer fuse links type SWF for protection against arc. Characteristics of SWF fuse links: - current limiting - short operating time - available in size 000,1,,3 acc. standard DIN 30 - marking like "SWF fuse link" - standard with top indicator By replacing NH fuse link with a characteristic gg acc. to VDE 03-1 with faster fuse link type SWF acc. to VDE 03-3, we can safeguard persons against electrical arc. Because of higher power dissipation, we can use SWF fuse link only between maintaince under voltage. After that, we must replace it with a gg fuse link. Damaged SWF fuse links must necessarily be replaced with new SWF fuse links. Arc energy E T I RMS x t E T (protection with SWF fuse link) 1 30 E T (protection with gg fuse link) Selection nominal current of SWF fuse link: (SWF) = (gg) SWF fuse links I Type Code Nr. 3 M00C/SWF/3A/500V M00C/SWF/35A/500V M00C/SWF/0A/500V M00C/SWF/50A/500V C 3 M00C/SWF/3A/500V M00C/SWF/80A/500V M00C/SWF/0A/500V M00C/SWF/15A/500V M00C/SWF/A/500V M1/SWF/3A/500V M1/SWF/80A/500V M1/SWF/0A/500V M1/SWF/15A/500V M1/SWF/A/500V M1/SWF/00A/500V M1/SWF/A/500V M1/SWF/50A/500V M/SWF/15A/500V M/SWF/A/500V M/SWF/00A/500V M/SWF/A/500V M/SWF/50A/500V M/SWF/315A/500V M/SWF/350A/500V M/SWF/00A/500V M3/SWF/50A/500V M3/SWF/315A/500V M3/SWF/350A/500V M3/SWF/00A/500V M3/SWF/5A/500V M3/SWF/500A/500V

20 Dimensions according to IEC 09-, see also ETI general catalogue Max. Mejni value prepustni of current tok IO 5 3 Karakteristika mejnega prepustnega toka Cut-off characteristics SWF fuse links-size 00C,1,,3 SWF talilnega vložka-velikosti 00C, 1,,3 I I K 500A 00/5A 350A 315A 50A 00/A A 15A 0A 80A 3A 50A 35A 3A 0A I N /A Prospective Pričakovani tok fault kratkega current stika I P Pre-arcing Talilni time čas t v [s] Time/current characteristics of fuse link type SWF-size 00C Time/current characteristics of fuse link type SWF-size 1,,3 Izklopne I/t karakteristike SWF talilnega vložka-velikosti 00C Izklopne I/t karakteristike SWF talilnega vložka-velikosti 1,,3 3A 35A 0A 50A 3A 80A 0A 15A A 1 3 Prospective Pričakovani tok fault kratkega current stika I P Pre-arcing Talilni time čas t v [s] A 80A 0A 15A A 00A 50A350A 5A A 315A00A500A 3 Prospective Pričakovani tok fault kratkega current stika I P 0

21 Fuses for protection of forklift batteries TRB General characteristics Rated voltage 80V d.c. Standards DIN 350/1 Application TRB fuse-links are used to protect the forklift battery TRB Type Code Nr. 35 TRB 35A/80V TRB 50A/80V TRB 3A/80V TRB 80A/80V TRB 0A/80V TRB 15A/80V 0035 TRB A/80V TRB 00A/80V TRB 50A/80V TRB 300A/80V TRB 355A/80V TRB 5A/80V

22 Fuses for TVSS products protection SRF Series Surge Fuse Through the past few years, the transient voltage surge suppresion (TVSS) industry has grown to one of the fastestgrowing segments among power protection products. Newness from ETI is series of fuses named SRF (Surge Rated Fuses), intended for the protection of TVSS products. The SRF Series has been designed to survive 8/0 μs lighting surge pulses without operating, allowing the TVSS system to react to the surge. All surge fuses have 8/0 μs ratings, not a continuous current rating. These fuses are intended to be installed in series with the TVSS devices and do not normally carry current, except for the periodic random surges caused by TVSS breakdown during normal operation. Under AC short circuit conditions these SRF surge suppression fuses have extremely high capability for current limitation. Features / Benefits Rated voltage 00V a.c., Breaking capacity 00 ka, Available in Surge Ratings from ka to 0 ka (8/0 μs), Designed to meet UL19 Second Edition requirements, Comply with the applicable requirements in UL 8-1 Low Voltage Fuses Part 1, General Requirements. Approvals Recognized under the components program of Underwriters Laboratories for Special Purpose Fuses, File number UL E377. Technical data Type Code No. 8x0 μsec Surge rating SRF Melting I t [A s] Total I t [A s] I PEAK at 130 ka SRF x51 SRF SRF SRF x

23 Fuses for high-voltage switchgear +0.3 Ø Fuses for high-voltage switchgear DB, S 38 Series For the protection of hight-voltage switchgear ETI offers a complete range of high-voltage fuses. The seriesconnected fuses provide failsafe surge protection for the downstream equipment in every situation. This is true for short circuits and also for overcurents exceeding five times the value of the nominal current (5x ). DB, S 38 series fuses are main fuses designed for nominal currents of 7,5 A to 15 A. DB, S 38 series fuses are available for the following voltage ratings: 1 kv AC and 1 kv DC 1,5 kv AC and 1,5 kv DC 3 kv AC and 3 kv DC 5 kv DC This range of fuses covers all existing train line voltages of the European railway sistems. Features Compact design different sizes Fuses designed for 5 kv DC Standards: UIC 550, EN 5013 and IEC Applications Main fuses for power supplies od rail vehicles, e.g. electric equipment and heating system Distribution fuses for branch circuits 3

24 U n [V] DB 1 00 Code No. 7, U n Code No. [V] DB DB 3 U n [V] Code No , U n Code No. [V] DB U n [V] Code No DB U n [V] Code No DB

25 U n Code No. [V] DB U n [V] S Code No ,, 3 and 5: Main fuses DB 1//3/5 8: Main fuses S 38 B +0.3 B 0 A Ø3, and 7: Main fuses DB //7 0 A +0.3 Ø A 00 size dimensions [mm] A B DB 1 1 1,0 DB 1 1,0 DB 3 170,0 DB 170 7,5 DB 5 0,0 DB 300 7,5 DB ,5 S 38 38,0 B ( Ø ) 5

26 DB series 1.0 kv DB series 1.5 kv Time-current characteristics 1,0 kv Time-current characteristics 1,5 kv Pre-arcing time [s] t v /s 3 0 A 15 A A 7,5 A 30 A 5 A 70 A 0 A 50 A 0 A 35 A 0 A 15 A Pre-arcing time [s] t v /s 3 50 A 0 A 0 A 7,5 A 0 A A A Prospective current I p /A -1-3 Prospective current I p /A DB series 3.0 kv Time-current characteristics 3 kv S 38 series 5 kv Time-current characteristics 5 kv Pre-arcing time [s] t v /s 3 Pre-arcing time [s] t v /s 3 0 A 0 A 0 A 30 A 50 A 70 A 0 A 50 A 70 A 0 A 0 A A 0 A 15 A 30 A 0 A Prospective current I p /A -1-3 Prospective current I p /A

27 Notes 7

28 8 October 01