The new HHA-BC current-limiting "Back-Up" rated series fuse line has been designed for optimum capacitor circuit protection for the North American market meeting requirements for indoor and
Low and high breaking capacity ratings typically range from 35A up to 10kA. The short circuit condition in the final product determines what fuse breaking capacity is needed. • Identify the
It explains that capacitor fuses must interrupt fault currents from failed capacitors while withstanding the energy discharged by other parallel capacitors. Expulsion fuses clear faults by expelling a melted element, while current limiting fuses absorb more energy but limit fault current.
ABB High Voltage Fuses Catalogue - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Current limiting fuses protect electrical apparatus like distribution transformers, motors, capacitor banks against overload currents. The fuses can operate as sole devices or can be combination with air / SF6 insulated switch disconnector.
Step 3: Determine the minimum value of the I2t-value of the fuse. Step 4: Selection of the correct fuse rating and part number from SCHURETR''s product line. The higher value determines the
The new HHA-BC current-limiting "Back-Up" rated series fuse line has been designed for optimum capacitor circuit protection for the North American market meeting requirements for indoor and outdoor usage. The HHA-BC capacitor fuse voltage rating is equal to or greater than the maximum open circuit voltage that the system
fuse-element in high-voltage fuses is high purity silver. Due to the high temperatures of the fuse-links observed during operation at rated conditions, the use of a material like copper may result in an unjustified breaking of the fuse-element as a result of oxidation processes. High-voltage fuses using copper may also change their
It explains that capacitor fuses must interrupt fault currents from failed capacitors while withstanding the energy discharged by other parallel capacitors. Expulsion fuses clear faults by expelling a melted element, while current limiting fuses
fuse-element in high-voltage fuses is high purity silver. Due to the high temperatures of the fuse-links observed during operation at rated conditions, the use of a material like copper may
Low and high breaking capacity ratings typically range from 35A up to 10kA. The short circuit condition in the final product determines what fuse breaking capacity is needed. • Identify the maximum fault current which the fuse will safety interrupt without exploding, rupturing or causing fire • Is different by AC and DC
For high voltage capacitor fuses this generally is defined as 8.3, 15.5, or 23 kV, the distribution system maxi-mum voltages. Other voltage ratings may be available for special applications.
For high voltage capacitor fuses, this is generally defined as 8.3, 15.5 or 23 kV, the distribution system maximum voltages. Other voltage ratings may be available for special applications. When a capacitor fails, the energy stored in its series group of capacitors is available to dump into the combination of the failed capacitor and fuse.
High voltage capacitor banks are composed of elementary capacitors, generally connected in several serial-parallel groups, providing the required electrical characteristics for the device. The nominal insulation
The fuse incorporates a high view operation indicator to quickly locate failed capacitor units. Applications The direct-connected capacitor fuse is ideally suited for: • High available fault current areas (high interrupting capacity) • Large capacitor banks (up to 200 A available) • Areas requiring low noise or non-expulsion reaction (noiseless operation) • High ambient (no thermal
The maximum power system voltage that the fuse can clear against. For high voltage capacitor fuses, this is generally defined as 8.3, 15.5 or 23 kV, the distribution system maximum voltages. Other voltage ratings may be available for special applications. Maximum parallel energy When a capacitor fails, the energy stored in its series group
For high voltage capacitor fuses this generally isdefined as 8.3, 15.5, or 23 kV, the distribution system maximumvoltages.
Step 3: Determine the minimum value of the I2t-value of the fuse. Step 4: Selection of the correct fuse rating and part number from SCHURETR''s product line. The higher value determines the selection of the rated current of the fuse. The normal operating mode current exceeds that of the inrush current peak.
For high voltage capacitor fuses this generally isdefined as 8.3, 15.5, or 23 kV, the distribution system maximumvoltages.
ABB High Voltage Capacitor Fuses ABB CIL HV Fuses - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document discusses capacitor fuses, providing definitions of key terms used to describe their
For high voltage capacitor fuses, this is generally defined as 8.3, 15.5 or 23 kV, the distribution system maximum voltages. Other voltage ratings may be available for special applications. Maximum parallel energy When a capacitor fails, the energy stored in its series group of capacitors is available to dump into the combination of the failed capacitor and fuse. The failed
This catalog describes Eaton''s Cooper Power series bus-mounted expulsion type capacitor fuse which provides highly reliable, economical protection for capacitor banks where medium
Steady state capacitor current is proportional to the applied voltage and frequency. Since voltage and frequency are fixed in power factor correction applications, the capacitor is not expected
Table 1. Fuse tube ratings Fuse voltage rating (kV) Capacitor mounting configuration (H or V) a Current rating (A) Power frequency interrupting rating (A) Maximum parallel- connected energy (kJ) b Catalog Symmetrical Asymmetrical number 8.7 H 50 3600 5000 20 FN10B4ASM 8.7 H 80 3600 5000 30 FN20B2ASM 8.7 V 50 3600 5000 20 FN10B4ASM
This catalog describes Eaton''s Cooper Power series bus-mounted expulsion type capacitor fuse which provides highly reliable, economical protection for capacitor banks where medium-energy-interrupting ability is required.
Make sure to select a fuse that has a rated voltage higher than the voltage of the circuit. The rated voltage of a fuse is the maximum voltage at which the fuse can safely interrupt an abnormal current. If the voltage of the circuit is higher than
For high voltage capacitor fuses this generally is defined as 8.3, 15.5, or 23 kV, the distribution system maxi-mum voltages. Other voltage ratings may be available for special applications. When a capacitor fails, the energy stored in its series group of capacitors is available to dump into the combination of the failed capacitor and fuse.
Steady state capacitor current is proportional to the applied voltage and frequency. Since voltage and frequency are fixed in power factor correction applications, the capacitor is not expected to be subjected to an overload. Therefore, capacitor fuses are not selected to provide overload protectors for the capacitor.
Fuse Characteristics, Terms and Consideration Factors 2–4 Fuse Selection Checklist 5–7 PTC Characteristics and Terms 8–9 PTC Product Applications 10 Typical PTC Circuit Protection Designs 11 Standards 12–14 PTC Selection Worksheet 15 Fuse and PTC Products Selection Guide 16–18 Packaging and Part Numbering 19 Legal Disclaimers 20 About
For high voltage capacitor fuses, this is generally defined as 8.3, 15.5 or 23 kV, the distribution system maximum voltages. Other voltage ratings may be available for special applications. When a capacitor fails, the energy stored in its series group of capacitors is available to dump into the combination of the failed capacitor and fuse.
For shunt capacitor applications, the energy is equal to 3.19 joules per kVar. The available energy is then compared to the rating of the fuse and capacitor unit. This is one criteria for selecting either expulsion or current-limiting fuses for a given application. If the parallel energy is above 20 kJ or 6000 kVar, we apply current-limiting fuses.
The maximum power system voltage that the fuse can clear against. For high voltage capacitor fuses, this is generally defined as 8.3, 15.5 or 23 kV, the distribution system maximum voltages. Other voltage ratings may be available for special applications.
Either of these two effects can impede the proper operation of the fuse. In the event of a capacitor fault, excess current will flow through the fuse of the faulted unit. This current causes the fuse element to melt and vaporize. An arc will form across the vaporized section within the fuse tube.
The fuse is usually applied to series, large shunt and DC capacitor banks. Because of the high back voltage that is developed, this fuse must be used with several capacitors in parallel to limit the voltage build up, or a flashover may occur elsewhere in the capacitor bank. The CLXP cannot be used in inductively limited fault applications.
related to the starting of the motor defined in IEC 60644. The capacitor bank protection fuse-links are described in IEC 60549 (High-voltage fuses for the external protection of shunt capacitors) . Also in this case the fuse should meet the requirements described in the general standard IEC 6028
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