Reinforced discrimination

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Transcription:

Reinforced discrimination

Compact NSX Additional characteristics Contents Presentation Functions and characteristics A- Installation recommendations B- Dimensions and connection C- Wiring diagrams D- Compact NSX0 to 0 TMD magnetic trip units, tripping curves E- TMG magnetic trip units, tripping curves E- Micrologic. and. G electronic trip units, tripping curves E-8 Micrologic. and 6. A or E electronic trip units, tripping curves E-9 MA magnetic trip units, Micrologic. M electronic trip units, tripping curves E- Micrologic 6. E-M electronic trip units, tripping curves E- Compact NSX400 to 60 Micrologic.,. and 6. A or E electronic trip units, tripping curves E- Micrologic 6. A or E electronic trip units, tripping curves E- Micrologic. M and. M electronic trip units, tripping curves E-4 Micrologic 6. E-M electronic trip units, tripping curves E- Tripping curves Compact NSX0 to 60 E-6 Current and energy limiting curves E-7 Catalogue numbers F- Glossary G- E-

Compact NSX0 to 0 TMD magnetic trip units, tripping curves Protection of distribution systems TM6D TMD DB464.eps 000 000 000 00 DB464.eps 000 000 000 00 00 0 0 00 0 0 0. TM6D : Im = x In 0. TMD : Im = x In..0..0.0.00 t < ms.0.00 t < ms.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 TM0D/TMD TM40D DB477.eps 000 000 000 00 DB4648.eps 000 000 000 00 00 0 0 00 0 0 0...0 TMD : Im =. x In TM0D : Im = In 0...0 TM40D : Im =. x In.0.00 t < ms.0.00 t < ms.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 E-

Compact NSX0 to 0 TMD magnetic trip units, tripping curves Protection of distribution systems TM0D TM6D DB464.eps 000 000 000 00 DB4640.eps 000 000 000 00 00 0 0 00 0 0 0. TM0D : x In 0. TM6D : 8 x In..0..0.0.00.0.00.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 TM80D / TM0D TMD / TM60D DB4648.eps 000 000 000 00 DB4649.eps 000 000 000 00 00 0 0 00 0 0 0...0 TM80D/TM0D : Im = 8 x In 0...0 TM60D : Im = 8 x In TMD : Im = x In.0.00 t < ms.0.00 t < ms.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 E-

Compact NSX0 to 0 TMD magnetic trip units, tripping curves Protection of distribution systems TM00D / TM0D DB46.eps 000 000 000 00 00 0 0 0...0.0.00 TM00D/TM0D : Im =... x In t < ms.00..7 4 7 0 0 0 70 0 00 00 For all TDM curves : Values are given for 40 C ambiant, Ir = xin, poles loaded, cold start. For Ir = k x In, read the time corresponding to /k times given current. For pole tripping, read the time corresponding to 0.8 times given current. For hot start (0.9 x Ir), divide max. time by, min. time by 4. DB4800.eps 0 80 0 0 40 60 E-4

Compact NSX0 to 0 TMG magnetic trip units, tripping curves Protection of distribution systems TM6G TMG DB4644.eps 000 000 000 00 DB4646.eps 000 000 000 00 00 0 0 00 0 0 0. 0...0 TM6G : Im = 4 x In..0.0.00 t < ms.0.00 TMG : Im =. x In t < ms.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 TM40G TM6G DB4649.eps 000 000 000 00 DB464.eps 000 000 000 00 00 0 0 00 0 0 0. 0...0 TM40G : Im = x In..0 TM6G : x In.0.00 t < ms.0.00.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 E-

Compact NSX0 to 0 TMG magnetic trip units, tripping curves Protection of distribution systems TM80G TM0G DB4666.eps DB4667.eps TM80G Im =. x In TM0G Im =. x In t < ms t < ms TMG TM60G DB4668.eps DB4669.eps TMG Im =. x In TM60G Im =.7 x In t < ms t < ms E-6

Compact NSX0 to 0 TMG magnetic trip units, tripping curves Protection of distribution systems TM00G TM0G DB4670.eps DB467.eps TM00G Im =. x In TM0G Im = x In t < ms t < ms E-7

Compact NSX0 to 0 Micrologic. and. G electronic trip units, tripping curves Protection of distribution systems Micrologic. - 40... 60 A Micrologic. - 0 A DB46.eps 000 000 000 00 40 A : Ir = 6...40 A 0 A : Ir = 6...0 A 60 A : Ir = 7..60 A DB46.eps 000 000 000 00 0 A : Ir = 90...0 A 00 0 0 00 0 0 0. Isd =.... x Ir 0. Isd =.... x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 Micrologic. G - 40... 60 A Micrologic. G - 0 A DB46.eps 000 000 000 00 40 A : Ir = 6...40 A 0 A : Ir = 6...0 A 60 A : Ir = 7..60 A DB464.eps 000 000 000 00 0 A : Ir = 90...0 A 00 0 0 00 0 0 0. Isd =....9 x Ir 0. Isd =....9 x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 E-8

Compact NSX0 to 0 Micrologic. and 6. A or E electronic trip units, tripping curves Protection of distribution systems Micrologic. and 6. A or E - 40... 60 A Micrologic. and 6. A or E - 0 A DB46.eps 000 000 000 00 40 A : Ir = 6...40 A 0 A : Ir = 6...0 A 60 A : Ir = 6..60 A DB466.eps 000 000 000 00 0 A : Ir = 90...0 A 00 0 0 tr = 0...6 s 00 0 0 tr = 0...6 s 0...0 I²t OFF I²t ON 0.4 0. 0. 0 0 Isd =.... x Ir 0...0 I²t OFF I²t ON 0.4 0. 0. 0 0 Isd =.... x Ir.0.00 t < ms.0.00 t < ms.00 Ii =... In..7 4 7 0 7 0 0 0 I / In.00 Ii =... In..7 4 7 0 7 0 0 0 I / In Micrologic 6. A or E (ground-fault protection) DB477.eps 000 000 000 00 00 0 0 40 A : Ig = 0.4.. x In > 40 A : Ig = 0... x In 0...0.0.00 I²t OFF I²t ON 0.4 0. 0. 0 0.00.0.07...4..7 4 7 0 0 I / In E-9

Compact NSX0 to 0 MA magnetic trip units, Micrologic. M electronic trip units, tripping curves Motor protection MA... MA0 MA and MA0 DB467.eps 000 000 000 00 DB468.eps 000 000 000 00 Thermal withstand 00 0 0 Thermal withstand 00 0 0 MA0 MA 0. Im = 6... 4 x In Im = 9... 4 x In (MA0 4P) 0. Im = 9... 4 x In..0..0.0.00 t < ms.0.00 t < ms.00..7 4 7 0 0 0 70 0 00 00.00..7 4 7 0 0 0 70 0 00 00 Micrologic. M - A Micrologic. M - 0... 0 A DB469.eps 000 000 000 00 00 0 0 A : Ir =... A class 0 class class DB4660.eps 000 000 000 00 00 0 0 0 A : Ir =...0 A 0 A : Ir = 0...0 A A : Ir = 70... A 0 A : Ir = 0...0 A class 0 class class 0. Isd =.. x Ir 0. Isd =.. x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = 7 x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 E-

Compact NSX0 to 0 Micrologic 6. E-M electronic trip units, tripping curves Motor protection Micrologic 6. E-M - A Micrologic 6. E-M - 0... 0 A DB466.eps 000 000 000 00 00 0 0 A : Ir =... A class 0 class 0 class class DB466.eps 000 000 000 00 00 0 0 0 A : Ir =...0 A 80 A : Ir =...80 A A : Ir = 70... A 0 A : Ir = 0...0 A class 0 class 0 class class 0. Isd =.. x Ir 0. Isd =.. x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = 7 x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 Micrologic 6. E-M (ground-fault protection) DB479.eps 000 000 000 00 00 0 0 A : Ig = 0.6.. x In 0 A : Ig = 0... x In > 0 A : Ig = 0... x In 0...0.0.00 0.4 0. 0. 0 0 0.4 0. 0. 0 0.00.0.07...4..7 4 7 0 0 I / In E-

Compact NSX400 to 60 Micrologic.,. and 6. A or E electronic trip units, tripping curves Protection of distribution systems Micrologic. - 0... 400 A Micrologic. - 60 A DB466.eps 000 000 000 00 0 A : Ir = 6...0 A 400 A : Ir = 44...400 A DB4664.eps 000 000 000 00 60 A : Ir =...60 A 00 0 0 00 0 0 0. Isd =.... x Ir 0. Isd =.... x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 Micrologic. and 6. A or E - 400 A Micrologic. and 6. A or E - 60 A DB466.eps 000 000 000 00 400 A : Ir = 0...400 A DB4666.eps 000 000 000 00 60 A : Ir =...60 A 00 0 0 tr = 0...6 s 00 0 0 tr = 0...6 s 0...0 I²t OFF I²t ON 0.4 0. 0. 0 0 Isd =.... x Ir 0...0 I²t OFF I²t ON 0.4 0. 0. 0 0 Isd =.... x Ir.0.00 t < ms.0.00 t < ms.00 Ii =... In..7 4 7 0 7 0 0 0 I / In.00 Ii =... In..7 4 7 0 7 0 0 0 I / In E-

Compact NSX400 to 60 Micrologic 6. A or E electronic trip units, tripping curves Protection of distribution systems Micrologic 6. A or E (ground-fault protection) DB477.eps 000 000 000 00 00 0 0 40 A : Ig = 0.4.. x In > 40 A : Ig = 0... x In 0...0.0.00 I²t OFF I²t ON 0.4 0. 0. 0 0.00.0.07...4..7 4 7 0 0 I / In E-

Compact NSX400 to 60 Micrologic. M and. M electronic trip units, tripping curves Motor protection Micrologic. M - 0 A Micrologic. M - 00 A DB4667.eps 000 000 000 00 DB4668.eps 000 000 000 00 00 0 0 Thermal withstand 00 0 0 Thermal withstand 0. 0...0 Isd =.. x In..0 Isd =.. x In.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 I / In.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 I / In Micrologic. M - 0 A Micrologic. M - 00 A DB4669.eps 000 000 000 00 00 0 0 0 A : Ir = 60...0 A class 0 class class DB4670.eps 000 000 000 00 00 0 0 00 A : Ir = 0...00 A class 0 class class 0. Isd =.. x Ir 0. Isd =.. x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 E-4

Compact NSX400 to 60 Micrologic 6. E-M electronic trip units, tripping curves Motor protection Micrologic 6. E-M - 0 A Micrologic 6. E-M - 00 A DB467.eps 000 000 000 00 00 0 0 0 A : Ir = 60...0 A class 0 class 0 class class DB467.eps 000 000 000 00 00 0 0 00 A : Ir = 0...00 A class 0 class 0 class class 0. Isd =.. x Ir 0. Isd =.. x Ir..0..0.0.00 t < ms.0.00 t < ms.00 Ii = x In..7 4 7 0 0 0 70 0 00 00.00 Ii = x In..7 4 7 0 0 0 70 0 00 00 Micrologic 6. E-M (ground fault protection) DB64.eps 000 000 000 00 00 0 0 Ig = 0... x In 0...0.0.00 0.4 0. 0. 0 0 0.4 0. 0. 0 0.00.0.07...4..7 4 7 0 0 I / In E-

Tripping curves Compact NSX0 to 60 Compact NSX0 to 60 devices incorporate the This system breaks very high fault currents. The device is mechanically tripped via a "piston" actuated directly by the pressure produced in the breaking units by the short-circuit. break, thereby ensuring discrimination. circuit-breaker rating. DB7.eps t (ms) 0 8 7 NSX60 NSX400 6 NSX0 4 NSX0 NSX60 4 6 0 0 40 60 0 00 ka rms E-6

Current and energy limiting curves DB79.eps The limiting capacity of a circuit breaker is its aptitude to let through a current, during a short-circuit, that is less than the prospective short-circuit current. (Isc) Prospective Isc peak Limited Isc peak Actual current Limited Isc Prospective current Prospective Isc The exceptional limiting capacity of the Compact NSX range is due to the rotating double-break technique (very rapid natural repulsion of contacts and the appearance of two arc voltages in-series with a very steep wave front). (t) Ics = 0 % Icu The exceptional limiting capacity of the Compact NSX range greatly reduces the forces created by fault currents in devices. The result is a major increase in breaking performance. b b v it conducts the rated current without abnormal temperature rise v v suitability for isolation is not impaired. Longer service life of electrical installations Current-limiting circuit breakers greatly reduce the negative effects of short-circuits on installations. Thermal effects Mechanical effects Reduced electrodynamic forces, therefore less risk of electrical contacts or busbars being deformed or broken. Electromagnetic effects Economy by means of cascading Cascading is a technique directly derived from current limiting. Circuit breakers with breaking capacities less than the prospective short-circuit current may be installed downstream of a limiting circuit breaker. The breaking capacity is reinforced by the limiting capacity of the upstream device. It follows that substantial savings can be made on downstream equipment and enclosures. Current and energy limiting curves The limiting capacity of a circuit breaker is expressed by two curves which are a b b Example page E-8 Maximum permissible cable stresses The table below indicates the maximum permissible thermal stresses for cables s. CSA. mm². mm² 4 mm² 6 mm² mm² PVC Cu.97x 4 8.6x 4 x 4.76x.x 6 Al.4x PRC Cu 4.x 4.9x.9x 6.6x.8x 6 Al 7.x CSA 6 mm² mm² mm² 0 mm² PVC Cu.4x 6 8.6x 6.6x 7.x 7 Al.9x 6.8x 6 6.64x 6.x 7 PRC Cu 4.69x 6.9x 7.x 7 4.6x 7 Al.9x 6 4.70x 6 9.x 6.88x 7 Example The table above indicates that the permissible stress is.x 6 A s. limited with a thermal stress less than 6x A page E-8 Cable protection is therefore ensured up to the limit of the breaking capacity of the circuit breaker. E-7

Current and energy limiting curves Current-limiting curves Voltage 400/440 V AC Limited short-circuit current (kâ peak) Voltage 660/690 V AC Limited short-circuit current (kâ peak) DB44.eps 00 00 DB44.eps 00 00 46 46 0 80 70 60 0 40 kâ peak 0 0 B R L S NSX60 H NSX400 N F L R S NSX0 H NSX0 N F NSX60 0 80 70 60 0 40 kâ peak 0 0 F, N S S H L L R R HB HB NSX60 NSX400 HB HB NSX0 NSX0 NSX60 8 7 6 4 4 6 0 0 40 60 6 0 00 00 ka rms 8 7 6 F N, H 4 4 6 0 0 40 60 6 0 00 00 ka rms E-8

Current and energy limiting curves Energy-limiting curves Voltage 400/440 V AC Limited energy Voltage 660/690 V AC Limited energy DB444.eps 9.4 8 DB44.eps 9.4 8 A s 7 6 B F F N N H H S S L L R NSX60 NSX400 R NSX0 NSX0 NSX60 A s 7 6 F, N N, H F S H L S L R R HB HB NSX60 NSX400 HB HB NSX0 NSX0 NSX60 4 6 0 0 400 70 0 00 00 ka rms 4 6 0 0 400 70 0 00 00 ka rms E-9

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