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

070424/9

Current Transducer LF 306-S

For the electronic measurement of currents : DC, AC, pulsed...,

with a galvanic isolation between the primary circuit (high power)

and the secondary circuit (electronic circuit).

Electrical data

I

PN

Primary nominal r.m.s. current

300

A

I

P

Primary current, measuring range

0 .. ± 500

A

R

M

Measuring resistance

R

M min

R

Mmax

with ± 12 V

@ ± 300 A

max

0

37

Ω

@ ± 500 A

max

0

8

Ω

with ± 15 V

@ ± 300 A

max

10

56

Ω

@ ± 500 A

max

10

20

Ω

I

SN

Secondary nominal r.m.s. current

150

mA

K

N

Conversion ratio

1 : 2000

V

C

Supply voltage (± 5 %)

± 12 .. 15

V

I

C

Current consumption

S

mA

Accuracy - Dynamic performance data

X

G

Overall accuracy @ I

± 0.4

%

ε

L

Linearity error

< 0.1

%

Typ

Max

I

O

Offset current @ I

± 0.20

mA

I

OM

± 0.08

mA

I

OT

Thermal drift of I

O

- 25°C .. + 70°C

± 0.20 ± 0.64

mA

t

ra

Reaction time @ 10 % of I

P max

< 500

ns

t

r

PN

< 1

µs

di/dt

di/dt accurately followed

> 100

A/µs

f

Frequency bandwidth (- 1 dB)

DC .. 100

kHz

General data

T

A

Ambient operating temperature

- 25 .. + 70

°C

T

S

Ambient storage temperature

- 40 .. + 90

°C

R

S

Secondary coil resistance @ T

34

Ω

m

Mass

60

g

Standards

EN 50178 : 1997

Features

transducer using the Hall effect

according to UL 94-V0.

Advantages

interference

Applications

motor drives

(UPS)

(SMPS)

applications.

Application Domain

I

PN

=

300 A

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