{"searchBar":{"inputPlaceholder":"Sök med nyckelord eller ställ en fråga","searchBtn":"Sök","error":"Ange ett sökord"}}

Välkommen till Schneider Electrics webbplats

Välkommen till vår webbplats.

Välj din plats

Welcome the the Schneider Electric French website. It looks like you are located in the United States, would you like to change your location?

Traduisez en francais
{"support":{"yesButton":"Ja","noButton":"Nej","feedback":{"title":"Vad kan vi göra för att bli bättre?"},"submitButton":"Skicka","successMessage":"Tack för din feedback","title":"Var det här till hjälp?","feedbackPercentLabel":"personer tyckte att det här var till hjälp","captcha":{"error":"Markera rutan"}}}
Sök bland vanliga frågor (FAQ)

Why clearance and creepage distance is different for Compact NSX and Masterpact MTZ/NW in BlokSeT switchboard?

Definition of clearance: Clearance is the distance between two conductive parts along a string stretched the shortest way between these conductive parts.
The clearance distance depends upon the Rated impulse withstand Voltage Uimp. The Uimp of Masterpact MTZ/NW is 12 kV and Uimp for Compact NSX is 8 kV. Based on the IEC61439-1, Table 1, the minimum clearance distance for 12kV & 8kV Impulse voltage is 14mm & 8mm respectively. The bus bar clearance in Blokset column maintained are ≥ 14mm for Masterpact NW and ≥ 8mm where Compact NSX used. The line side clearance of NSX breaker will be
 ≥ 14mm

Definition of Creepage: Creepage distance is the shortest distance along the surface of a solid insulating material between two conductive parts.

The creepage distance depends upon the Rated Insulating Voltage Ui and the insulation material group. The insulating voltage of Masterpact MTZ/NW is 1000V and Compact NSX is 750V. The material group is IIIa. Based on the IEC61439-1, Table 2, the minimum creepage distance for 1000V insulating voltage is 16mm and up to 800V is 12.5mm. The creepage distance for BlokSeT column maintained are ≥ 16mm for Masterpact MTZ/NW and ≥ 12.5mm where Compact NSX used.

Utforska mer
Utforska mer