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25July2014/Version 1

LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice

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HO 40 .. 150-NP series

Application information

Connection diagram

The sensitivity may change slightly for all other configurations, therefore, LEM advises the user to characterize any specific

configuration.

2)

The maximum magnetic offset referred to primary is inversely proportional to the number of turns, thus is divided by 2 with 2 turns

and by 4 with 4 turns.

Definition of typical, minimum and maximum values

Minimum and maximum values for specified limiting and safety conditions have to be understood as such as well as values

shown in “typical” graphs.

On the other hand, measured values are part of a statistical distribution that can be specified by an interval with upper and lower

limits and a probability for measured values to lie within this interval.

Unless otherwise stated (e.g. “100 % tested”), the LEM definition for such intervals designated with “min” and “max” is that the

probability for values of samples to lie in this interval is 99.73 %.

For a normal (Gaussian) distribution, this corresponds to an interval between -3 sigma and +3 sigma. If “typical” values are not

obviously mean or average values, those values are defined to delimit intervals with a probability of 68.27 %, corresponding to

an interval between -sigma and +sigma for a normal distribution.

Typical, maximal and minimal values are determined during the initial characterization of a product.

Remark

Installation of the transducer must be done unless otherwise specified on the datasheet, according to LEM Transducer Generic

Mounting Rules. Please refer to LEM document N°ANE120504 available on our Web site:

Products/Product Documentation.

Number of

primary turns

Primary resistance

current rms

R

Recommended connections

1

0.09

10

11

12

13

9

8

7

6

2

0.36

10

11

12

13

9

8

7

6

4

1.45

10

11

12

13

9

8

7

6

Number of primary turns

Primary current

I

I

I

I

1

40 A

60 A

120 A

150 A

2

20 A

30 A

60 A

75 A

4

10 A

15 A

30 A

37.5 A