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Fuse protection of HF-ballasts

The inrush current is caused by the capacitors in the HF-ballast’s mains filter. The size of the inrush current is not dependent on the output of the HF-ballast’s but its design. The inrush current varies from one HF-ballast manufacturer to another. Due to the characteristics of the inrush current we recommended that miniature circuit breakers with tripping characteristic C are used.

If there is a need to connect more HF-ballasts than that stated in column 1 please contact our customer service for exact data.

As manufacturers continuously develop their products the data on this page is not binding. For the latest data, please check with the manufacturers of individual HF-ballast.

We reserve the right to make alterations and make reservations for possible printer’s errors.

The number of HF-ballasts that can be connected to a circuit, protected with a 16 A miniature circuit breaker of type C, is shown in the table below. We list two different values:


Column 1

The value indicates the maximum number of HF-ballasts that, independent of brand and type (Osram, Philips, Tridonic, Helvar) which we use, can be connected to the miniature circuit breaker.

Column 2

The value indicates the maximum number of HF-ballasts that can be fuse protected for certain brands.

he value should be seen as an indication of what is possible. Most brands and types of HF-ballast lie between the values stated in column 1 and in column 2.


T5

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
1×14 47 122 46 150
2×14 22 47 20 78
3×14 44 47 34 47
4×14 42 47 26 47
1×21 47 86 46 120
2×21 22 47 20 60
1×28 47 86 26 83
2×28 22 47 20 48
1×35 22 86 32 76
2×35 22 47 18 34
1×24 44 103 47 150
2×24 20 53 38 52
1×39 44 61 45 76
2×39 20 32 20 32
1×49 22 56 32 48
2×49 20 30 18 32
1×54 38 47 26 76
2×54 20 26 20 32
1×80 20 30 20 38
2×80 16 20 15 20

 

T5 ECO

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column
Some
HF-ballasts
1×13 47 122 47 150
2×13 22 47 20 78
3×13 44 47 38 38
4×13 42 47 26 42
1×20 44 103 47 150
2×20 20 53 38 52
1×25 47 86 26 83
2×25 28 47 20 48
1×32 47 86 38 76
2×32 28 47 18 33
1×45 44 56 38 48
2×45 20 26 18 26
1×50 38 47 25 76
2×50 20 26 20 30
1×73 20 30 20 38
2×73 16 20 15 20

 

T8

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
1×18 48 122 47 86
2×18 48 75 20 70
3×18 20 80 24 56
4×18 20 56 20 38
1×36 47 82 45 70
2×36 37 56 20 56
1×58 47 60 40 56
2×58 20 26 20 30
1×70 34 47 - -
2×70 18 20 - -
- = no current data available.        

 

T5C

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
1×22 33 74 24 54
1×22+1×40 22 56 - -
1×40 33 74 24 54
1×55 47 50 20 34
1×60 47 47 20 20
- = no current data available.        

 

FSD

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
1×18 48 74 40 56
2×18 38 56 16 38
1×24 47 103 27 86
2×24 20 56 12 52
1×36 47 56 47 70
2×36 44 56 20 34
1×40 47 74 47 70
2×40 20 38 20 30
1×55 32 50 40 56
2×55 18 22 18 26
1×80 30 30 20 47
2×80 16 16 15 18

 

FSQ

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All

HF-ballasts
Column 2
Some

HF-ballasts
1×13 34 82 40 40
2×13 34 56 60 60
1×18 35 82 38 70
2×18 35 80 26 47
1×26 33 74 38 70
2×26 20 38 20 46

 

FSM

 

Output
HF-std
HF-dim
  Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
Column 1
All
HF-ballasts
Column 2
Some
HF-ballasts
1×13 34 118 40 40
2×13 34 116 60 60
1×14 47 94 47 47
2×14 47 94 47 47
1×17 47 94 47 47
2×17 47 94 47 47
1×18 35 152 38 70
2×18 35 128 26 48
1×26 33 144 38 70
2×26 20 102 20 46
1×32 33 124 38 50
2×32 20 64 20 26
1×42 33 124 38 50
2×42 20 54 12 26
1×57 31 85 22 38
2×57 17 17 - -
- = no current data available.        

 

Additional comments 

  • With fuse protection of luminaires, consideration should also be taken of the inrush current as well as the combined rated current for the groups’ luminaires, the cable’s cross-section and the average length of the group’s cabling.
  • The figures listed in the above tables assume a simultaneous ignition (same switch) at the mains voltage peak value.
  • The values in the tables apply for 1-pole miniature circuit breakers. When using multi-pole miniature circuit breakers the number of luminaires should be reduced by 20 %.
  • When using 16 A miniature circuit breakers with B characteristics the size of the groups should be reduced by half. For 10 A miniature circuit breakers with C characteristic the size of the group should be reduced by approximately 40 %. For exact sizing please contact our customer service team.

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