FINAL DISTRIBUTION BOARD (DB)

[Abhilash]

Dear All,

Kindly help for my below query,

We want to type Test our final DIstribution board as per IEC 61439. we are using the MCB/ELCB's schneider make. I want to know what will be the  Rated insulation voltage for the DB: Ui
=  ??? if  other parameters are as follows

Rated voltage: Un = 415V

Rated operational voltage: Ue =  690V      

Rated impulse withstand
voltage: Uimp = 
6kV

When I checked in the MCB catalogue Ui for MCB is shown as 500V

If anybody can help me in this matter, I am verymuch thankful.

[Spir Georges GHALI]

---

Dear All,

Kindly help for my below query,

We want to type Test our final DIstribution board as per IEC 61439. we are using the MCB/ELCB's schneider make. I want to know what will be the  Rated insulation voltage for the DB: Ui
=  ??? if  other parameters are as follows

Rated voltage: Un = 415V

Rated operational voltage: Ue =  690V      

Rated impulse withstand
voltage: Uimp = 
6kV

When I checked in the MCB catalogue Ui for MCB is shown as 500V

If anybody can help me in this matter, I am verymuch thankful.

---

Dear ;

 

First, as all MCB are designed and tested accordingly to ” IEC 60898 “, so, the ” Ui = 500V ” because it's defined by ” IEC 60898 “.

 

About ” MCB's for ” Schneider Electric ” :

     – For all ” MCB : C60…  &  C120… ” the ” Ui = 500 V “.

     – For ” NG125… ” the ” Ui = 690 V “.

 

About ” ELCB's ” for ” Schneider Electric ” :

     – If you use ” Vigi block ” with ” MCB ” the Ui is equal that for ” MCB “.

     – If you use ” RCCB “, be careful because for some of them ” Ui = 440 V “.

 

Regards.

 

said: Abhilash

[Abhilash]

DEAR SIR,

In this case we can go for 

Rated insulation voltage for the DB: Ui …… how much for doing Asta type test with this  DB as per IEC61439.

 

[Spir Georges GHALI]

Abhilash said:

DEAR SIR,
 

In this case we can go for 
 

 

 
 

Rated insulation voltage for the DB: Ui …… how much for doing Asta type test with this  DB as per IEC61439.
 

 
 

 
 

---

 

Dear ;
 

 

As we use ” Ui ” to do the tests for ” Dielectric , Clearance & Creepage “, and if the DB contains RCCB where for some of them ” Ui : 440V “, in this case we should use ” Ui : 440V ” to do these tests.
 

But :
 

– If there's ” MCB ( C60… & C120… )+ Vigi-block ” we can use ” Ui : 500V “.

– If there's ” MCB ( only NG125… )+ Vigi-block ” we can use ” Ui : 690V “.

 

 
 

 
 

 
 

[Author]

Posts