3 SPX V SPX and fuse carriers for

3 SPX -V SPX and fuse carriers for blade type fuses 01/2016 Energy Distribution SBU 1

Introduction Energy Distribution SBU 2

Where? Fuse switches are mostly used as a protections of outgoings both in main and secondary switchboards Most typical type of loads protected by fuse switches: - cables - motors (protection against short-circuit) - semiconductors (UPS batteries protection or telecom power supplies) - additional protection of SPD's - protection of capacitors in capacitors banks - protection of solar power supplies Energy Distribution SBU 3

When? When could it be useful to evaluate a fuses solution instead of an MCCB one? - In cases of very low price compared to MCCBs (half or even one third of MCCB price) and - In particular technical parameters needs (ability to limit efficiently high short-circuit currents up to 200 -300 k. A good protection for cables) Energy Distribution SBU 4

International standards International standard that regulates fuses and fuse holders is IEC 60947 – 3 Switches, disconnectors, switch-disconnectors and fuse-combination units It’s mandatory to pass withstand testing with x 1. 6 rated current over a period of one hour Energy Distribution SBU 5

Benefits offered by Current-Limiting Fuses High interrupt ratings Modern current-limiting fuses have high interrupting ratings at no extra cost. Whether for the initial installation or system updates, a fusible system can maintain a sufficient interrupting rating. This helps with achieving high assembly short-circuit current ratings High SCCR High assembly short-circuit current ratings can be achieved Rejection Features Current-limiting fuses have rejection features which, when used with rejection fuse clips, assure replacement with a device of the same voltage rating and equal or greater interrupting rating. In addition, rejection features restrict the fuses used for replacement to ones of the same class or type. Energy Distribution SBU 6

Benefits offered by Current-Limiting Fuses Flexibility Increased flexibility in panel use and installation. Valuable time that was spent gathering information for proper application is drastically reduced with fuses since: • Fuses can be installed in systems with available fault currents up to 200 k. A or 300 k. A covering the majority of installations that exist. • Fuses can handle line-to-ground fault currents up to their marked interrupting rating. • Fuses have a straight voltage rating instead of a slash voltage rating. A device with a slash voltage rating is limited to installation in ONLY a solidly grounded wye type system. Fuses can be installed in any type of installation independent of the grounding scheme used. Reliability Fuses provide reliable protection throughout the life of the installation. After a fault occurs, fuses are replaced with new factory calibrated fuses assuring the same level of protection that existed previous to the fault. Energy Distribution SBU 7

Benefits offered by Current-Limiting Fuses No Venting Fuses do not VENT. Therefore fuses will not affect other components in the panel while clearing a fault. Additional guards or barriers are not required. Component Protection via current limitation Current limitation provides protection of circuit components for even the most susceptible components such as equipment grounding conductors. Selective Coordination Achieving selective coordination is simple. Typically selective coordination can be achieved between current-limiting fuses by simply maintaining a minimum amp ratio between upstream and downstream fuses. This can aid in diagnostics within the building electrical system or machine panel as only the affected circuit is isolated. Selective coordination helps isolate faulted circuits from the rest of the system and prevents unnecessary power loss to portions of a building. Energy Distribution SBU 8

A comparison: fuses vs circuit breakers Both types of devices can meet the needed requirements, but are circuit breakers or fuses best suited for a particular application? Unfortunately, there is no simple answer to this question—several other factors must be taken into account, such as the level of protection provided, selective coordination requirements, reliability, renewability and costs. Energy Distribution SBU 9

Fuses speed/peak let through current In case of large short circuit currents, no other protection system is faster than the fuse. The consequence is that the peak current is limited down to low values by the fuse. Energy Distribution SBU 10

Fuses maintenance Talking about fuses systems, it’s mandatory to distinguish between -Maintenance BEFORE a short circuit and -Maintenance AFTER a short circuit BEFORE No particular maintenace is needed, because fuse characteristics doesn’t change AFTER Need to replace blown fuse with a new one, with the right safety precautions Energy Distribution SBU 11

Fuses selective coordination Selective coordination of overcurrent protective devices is required to ensure that two somewhat mutually-exclusive goals are met—faults should be cleared from the system as quickly as possible in order to minimize damage to equipment, while the act of clearing the faults from the system should interrupt power to as small a portion of the system as possible. Selectivity between two fuses operating under short-circuit conditions exists when the total clearing energy of the loadside fuse is less than the melting energy of the lineside fuse. The following explains this process. For a given overcurrent, a specific fuse, under the same circumstances, will open at a time within the fuse’s time-current band. Fuses have an inverse time-current characteristic, which means the greater the overcurrent, the faster they interrupt Energy Distribution SBU 12

Ground fault protection Phase-to-ground faults are the most common form of electrical faults (95% to 98%) Ground faults are the most destructive type of electrical fault. Fuses do NOT provide selective coordination from most phase-to-ground faults When ground-fault protection is required in a fusible system, the disconnecting means (usually a switch, sometimes a contactor) must be capable of tripping automatically, and external relaying and a zerosequence CT or set of residually-connected phase CTs must be installed to detect the ground faults and send the trip signal to the disconnecting means. Energy Distribution SBU 13

Fuses motor protection PROBLEM Motor Starting Currents When an AC motor is energized, a high inrush current occurs. Typically, during the initial half cycle, the inrush current is often higher than 20 times the normal full load current. SOLUTION Fast Acting Fuses To offer overload protection, a protective fuse, depending on its application and the motor’s Service Factor (SF), should be sized to prevent damages. Energy Distribution SBU 14

Fuses motor protection: a drawback The use of fuses has the potential to produce a severe unbalance condition commonly referred to as single-phasing. Single-phasing occurs when one phase in a three-phase motor circuit opens but the other two phases remain in service. If the single-phasing occurs upstream of the motor but at the same voltage level, then zero current flows on the phase with the open fuse and elevated current levels flow in one or both of the remaining phases. To help guard against motor damage or failure due to single-phasing size motor circuit fuses closer to the full-load current rating of the motor. Energy Distribution SBU 15

Fuses semiconductor protection One of the great advantages of a current-limiting overcurrent protective device is that it can literally limit the peak magnitude of fault current that flows through it by opening within the first half-cycle after fault initiation, before the fault current has a chance to reach its peak value. Highly current-limiting fuses for special applications, such as semiconductor fuses that are designed to protect power electronic equipment, are also available. Energy Distribution SBU 16

Fuses temperature derating The higher the ambient temperature, the hotter the fuse will operate, and the shorter its life will be. Conversely, operating at a lower temperature will prolong fuse life. A fuse also runs hotter as the normal operating current approaches or exceeds the rating of the selected fuse. Energy Distribution SBU 17

Fuse carrier selection Energy Distribution SBU 18

Fuse carriers: different approaches SPX and SPX 3 -V SPX-D Blade type cartridge fuses Energy Distribution SBU 19

Fuse holders: different approaches Blade type cartridge fuses Ø Cheapest approach Ø Chance to mount poles one-aside-one Ø Reliability difficulties it’s not simple to substitute fuses: Energy Distribution SBU 20

Fuse holders: different approaches SPX-D Ø very quick exchange between status (ON/OFF) Ø simplified and robust load commutations Ø status switching time indipendent by handling time Ø DIN Rail mounting possibility Energy Distribution SBU 21

Fuse holders: different approaches SPX and SPX 3 -V Ø Safe circuits interruption Ø Handle to simplify fuses extraction Ø Electrical test input via Ø status switching time dipendent by handling time Ø Busbar or plate (just SPX) mounting Energy Distribution SBU 22

The offer Energy Distribution SBU 23

A view on the offer On a woldwide scenario, on many plants there could be the necessity to protect devices with fuses. Accomplishing this idea, Legrand has enhanced its fuse carriers offers: with new SPX and SPX 3 -V devices it’s possible to protect against short-circuits and overloads and to disconnect electric circuit parts without load or at full load, maintaning switching selectivity. To manage the power over the busbar system, a new MCCB adapter has been designed to integrate our DPX 3 1600 breakers. Energy Distribution SBU 24

A view on the offer SPX 3 -V SPX Energy Distribution SBU 25

3 SPX -V Energy Distribution SBU 26

SPX 3 -V overview. Vertical DIN 43 620 fuse carriers. 185 mm busbar mounting. Standard IEC 60947 -3. Transparent window to check fuses. Simultenous switching of all poles. Wide range of fuses dimensions (from 00 to 3). Standard range of currents (from 160 A to 630 A). Chance to integrate DPX 3 1600 MCCBs Energy Distribution SBU 27

SPX 3 -V overview Just 2 frames to allow protection from 160 A to 630 A: • Frame 1: 160 A deep (ready for current transformers accessorizing) • Frame 2: same for 250 A, 400 A and 630 A Adapter for DPX 3 1600, to allow the managing of main power by Legrand MCCB breakers, with simple and quick mount on 185 mm busbar system Energy Distribution SBU 28

SPX 3 -V overview • Hinged windows for time-saving mounting and no need to dismantle the fuse disconnector • Easily accessible cable terminal compartment Lid can be locked in the open and closed positions • Lid position monitoring with two signalling switches per lid • Easy switching thanks to ergonomic operating handle • Considerable scope for cable connecting • Outgoing feeder connections top or bottom • Lid can be lead-sealed Energy Distribution SBU 29

SPX 3 -V overview: parking position The lids of the 1 -pole switching fuse disconnectors can be unhinged. A safe parking position is assured from them being turned over and remounted. The lid can no longer be inadvertently closed. Energy Distribution SBU 30

SPX 3 -V overview: cooling and ventilation Ventilation ducts to reduce overheating Exhaust ducts for arching gases: no more need of arching chambers The lateral ducts of the SPX 3 -V produce a kind of draw-off chimney which acts as a cooling and ventilation system and pinpoints the discharge of switching gases and heat. Energy Distribution SBU 31

SPX 3 -V overview: busbar mounting • Accessories for mounting on drilled and undrilled bars (without or with covers). • Easy access to mounting screws. No more need to dismantle the product to install it Energy Distribution SBU 32

SPX 3 -V overview: busbar mounting Mounting with M 8/M 12 bolt connection Three M 8/M 12 screws can be used to fix the fuse disconnector onto either drilled or punched busbars in the traditional method after the added labour of drilling holes in the busbars. Energy Distribution SBU 33

SPX 3 -V overview: connection on terminals Hinged connection compartment Energy Distribution SBU 34

SPX 3 -V overview: connection on terminals Multiple connection possibility and accessories Box terminal No additional terminal compartment cover is needed when using a box terminal for the connection. Drawer-type method The drawer-type method allows for a considerable variation in connections. Connection can be flexibly made with either nut or stud bolt – depending on installation requirements. An additional terminal housing cover is needed when using a cable lug for the connection. These covers can be linked in series to form longer covers. Energy Distribution SBU 35

SPX 3 -V overview: current transformers A complete range of integrated Current Transformers • Currents from 80 to 600 A • Class accuracy 1 • No additional space required • Simplified installation Energy Distribution SBU 36

SPX 3 -V overview: adapter for Legrand MCCB Adapters enable circuit breakers to be quickly and easily mounted on the 185 mm busbar system. They can be used for both feed- and tap-mounting of circuit breakers to the busbar system. Compatibility is given to all DPX 3 1600 family circuit breakers Space-saving integration of current transformers can be accommodated on the adapter assembly Energy Distribution SBU 37

SPX 3 -V range DIN 43 620 NH in-line fuse switch disconnector, 3 -pole switchable, connection top/bottom Reference Nominal current Fuse cartridge size 6 058 00 160 A 00 6 058 01 250 A 1 6 058 02 400 A 2 6 058 03 630 A 3 Energy Distribution SBU 38

SPX 3 -V accessories Cage terminals Prism terminals for flexible copper rail conductor, flexible or rigid multicore copper cables and aluminium cables Reference Conductor size SPX 3 -V frame 6 058 65 10 – 95 mm 2 160 A 6 058 66 70 – 240 mm 2 250/400/630 A 6 058 67 120 – 400 mm 2 250/400/630 A 6 058 65 6 058 66 6 058 67 Energy Distribution SBU 39

SPX 3 -V accessories Signalling contact To show the status of the cover: 5 A with 250 Vac or 4 A with 30 Vdc Reference SPX 3 -V frame 6 052 30 All frames Energy Distribution SBU 40

SPX 3 -V accessories 185 mm busbar support universal busbar support 185 mm for drilled and undrilled flat busbars Reference Number of poles 6 058 80 3 Energy Distribution SBU 41

SPX 3 -V accessories DPX 3 1600 MCCB adapter 185 mm busbar system adapter for all DPX 3 1600, connections with the circuit breaker on top or on the bottom, screw connection to drilled busbars Reference Link 6 058 60 Top connection 6 058 61 Bottom connection Energy Distribution SBU 42

SPX 3 -V accessories Current transformers accuracy class 1, secondary rated current 5 A Reference Rated current SPX 3 -V frame 6 058 70 80 A 160 A 6 058 71 150 A 160 A 6 058 73 150 A 250/400/630 A 6 058 74 200 A 250/400/630 A 6 058 75 250 A 250/400/630 A 6 058 76 400 A 250/400/630 A 6 058 77 600 A 250/400/630 A Energy Distribution SBU 43

SPX Energy Distribution SBU 44

SPX overview. Horizontal fuse carriers. Plate or busbar mounting. Standard IEC 60947 -3. Transparent window to check fuses. Simultenous switching of all poles. Complete range of fuses dimensions (from 000 to 3). Complete range of currents (from 125 A to 630 A) Energy Distribution SBU 45

SPX plate mounting Reference Nominal current Fuse size 6 052 00 125 A 000 6 052 02 160 A 00 6 052 04 250 A 1 6 052 06 400 A 2 6 052 08 630 A 3 6 052 00 6 052 02 6 052 04 6 052 06 6 052 08 Energy Distribution SBU 46

SPX 60 mm busbar mounting Reference Nominal current Fuse cartridge size 6 052 01 125 A 000 6 052 03 160 A 00 6 052 05 250 A 1 6 052 07 400 A 2 6 052 09 630 A 3 Energy Distribution SBU 47

SPX accessories Cage terminals Prism terminals for copper and aluminium rail conductor, flexible or rigid multicore copper cables and aluminium cables 6 052 22 Reference Conductor size SPX frame 6 052 22 16 – 70 mm 2 160 A 6 052 23 70 – 150 mm 2 250 A 6 052 24 120 – 240 mm 2 400 A 6 052 25 150 – 300 mm 2 630 A 6 052 23 6 052 24 6 052 25 Energy Distribution SBU 48

SPX accessories Terminal shields To fix at top or bottom of fuse carrier Reference SPX frame 6 052 49 160 A, plate mounting 6 052 31 160 A, busbar mounting 6 052 32 250 A, all mounting 6 052 33 400 A, all mounting Energy Distribution SBU 49

SPX accessories Signalling contact To show the status of the cover: 5 A with 250 Vac or 4 A with 30 Vdc Reference SPX frame 6 052 30 All frames Energy Distribution SBU 50

SPX accessories 60 mm busbar support Isolating support for 12, 15, 20, 25, 30 x 5, 10 mm flat rigid copper rails. It can be installed in XL 3 400/800/4000 distribution board using vertical adaptors for uprights. Reference Number of poles 6 052 46 3 Energy Distribution SBU 51

SPX accessories Covers Reference Details 6 051 64 Cover for 60 mm busbar system 6 051 65 Support for cover 6 051 64 6 051 65 Energy Distribution SBU 52

Annex A Characteristics Energy Distribution SBU 53

SPX 3 -V electrical characteristics Energy Distribution SBU 54

SPX 3 -V connection characteristics sm: stranded sectored se: solid sectored rm: stranded round re: solid round f: flexible AE: wire-end ferrules Energy Distribution SBU 55

SPX electrical characteristics Energy Distribution SBU 56

SPX connection characteristics sm: stranded sectored rm: stranded round f: flexible AE: wire-end ferrules Energy Distribution SBU 57

Annex B Dimensions Energy Distribution SBU 58

SPX 3 -V dimensions SPX 3 -V 00 Energy Distribution SBU 59

SPX 3 -V dimensions SPX 3 -V 1/2/3 Energy Distribution SBU 60

SPX dimensions SPX 000, plate mounting SPX 00, plate mounting Energy Distribution SBU 61

SPX dimensions SPX 1/2/3, plate mounting Energy Distribution SBU 62

SPX dimensions SPX 000, busbar mounting SPX 00, busbar mounting Energy Distribution SBU 63

SPX dimensions SPX 1/2/3, busbar mounting Energy Distribution SBU 64

SPX dimensions (accessories) Terminal shields Signalling contact Energy Distribution SBU 65

SPX dimensions (accessories) Covers 60 mm busbar support Energy Distribution SBU 66

SPX 3 -V dimensions 185 mm busbar system support Energy Distribution SBU 67

Annex C Maximum fuses power ratings Energy Distribution SBU 68

Fuses selecting table for SPX 3 -V Please note: these values are for guidance only; check compliance of fuses maximum power dissipation and rated current on corresponding datasheets Energy Distribution SBU 69

Fuses selecting table for SPX Please note: these values are for guidance only; check compliance of fuses maximum power dissipation and rated current on corresponding datasheets Energy Distribution SBU 70

Annex D Diazed fuse holders Energy Distribution SBU 71

Legrand diazed fuse holders range Devices for the protection of the electric circuits from overcharge and short circuit using D 0 fuses type. They have to be installed in 60 mm BUS-BAR systems. The D 0 fuses have a high value of Icu and their maintenance and substitution is very fast and easy. Reference Description 6 051 50 Diazed base up to 25 A 6 051 51 Diazed base up to 63 A 6 051 60 42 mm wide cover for diazed base up to 25 A 6 051 62 84 mm wide cover for diazed base up to 25 A 6 051 61 57 mm wide cover for diazed base up to 63 A 6 051 63 114 mm wide cover for diazed base up to 25 A Energy Distribution SBU 72

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