LTSR6-NP [LEM]

Current Transducer LTSR 6-NP

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

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

and the secondary circuit (electronic circuit).

I

PN

= 6 At

16073

Electrical data

I

PN

I

PM

Î

P

V

OUT

V

REF

G

N

S

R

L

C

Lmaxi

R

IM

TCR

IM

V

C

I

C

X

Primary nominal current rms

Primary current, measuring range

Overload capability

Output voltage (Analog) @

I

P

I

P

= 0

Reference voltage (internal reference), refout mode

Reference voltage (external reference), refin mode

Sensitivity

Number of secondary turns (± 0.1 %)

Load resistance

Maximun capacitive loading

Internal measuring resistance (± 0.5 %)

Temperature coefficient of

R

IM

Supply voltage (± 5 %)

Current consumption @

V

C

= 5 V

Typ

Accuracy @

I

PN

,

T

A

= 25°C

Accuracy with

R

IM

@

I

PN

,

T

A

= 25°C

Linearity error

6

0 .. ± 19.2

1)

At

At

Features

•

Closed loop (compensated) multi-

•

•

•

•

•

•

•

range current transducer using the

Hall effect

Unipolar voltage supply

Isolated plastic case recognized

according to UL 94-V0

Compact design for PCB mounting

Incorporated measuring resistance

Extended measuring range

Access to the internal voltage

reference

Possibility to feed the transducer

reference from external supply.

250

At

2.5

±

(0.625

·

I

P

/I

PN

) V

2.5

2)

V

3)

2.5

V

4)

1.9 .. 2.7

V

104.16

mV/A

2000

≥

2

k

Ω

500

pF

208.33

Ω

< 50

ppm/K

5

V

5)

28 +

I

S

+ (V

OUT

/R

L

) mA

± 0.2

± 0.7

< 0.1

Maxi

150

50

6)

± 0.5

± 2.0

± 2.0

50

100

< 100

< 400

> 15

DC .. 100

DC .. 200

%

%

%

Accuracy - Dynamic performance data

Advantages

•

•

•

•

•

•

•

Excellent accuracy

Very good linearity

Very low temperature drift

Optimized response time

Wide frequency bandwidth

No insertion losses

High immunity to external

interference

•

Current overload capability.

ε

L

TCV

OUT

Temperature coefficient of

V

OUT

/V

REF

@

I

P

= 0

- 40°C .. + 85°C

TCG

Temperature coefficient of

G

- 40°C .. + 85°C

V

OM

Magnetic offset voltage @

I

P

= 0,

after an overload of 3 x

I

PN

5 x

I

PN

10 x

I

PN

TCV

REF

Temperature coefficient of internal

V

REF

@

I

P

= 0 - 10°C .. + 85°C

- 40°C .. - 10°C

t

ra

Reaction time @ 10 % of

I

PN

t

r

Response time to 90 % of

I

PN

step

di/dt

di/dt accurately followed

BW

Frequency bandwidth (0 .. - 0.5 dB)

(- 0.5 .. 1 dB)

Notes:

1)

ppm/K

ppm/K

mV

mV

mV

ppm/K

ppm/K

ns

ns

A/µs

kHz

kHz

Applications

•

AC variable speed drives and servo

•

•

•

•

•

motor drives

Static converters for DC motor drives

Battery supplied applications

Uninterruptible Power Supplies (UPS)

Switched Mode Power Supplies (SMPS)

Power supplies for welding

applications.

Only in refout mode or with external REF less than 2.525 V and greater than

2.475 V. For external REF out of these limits see leaflet.

2)

V

OUT

is linked to

V

REF

,

by conception the difference between these two nodes for

I

P

= 0 is maximum

± 25 mV, 2.475 V <

V

OUT

< 2.525 V.

3)

In Refout mode at

T

A

= 25°C, 2.475 V<

V

REF

< 2.525 V. The minimal impedance loading the ref pin should be > 220 kΩ. Internal

impedance = 600

Ω.

For most applications you need to buffer this output to feed it into

an ADC for example.

4)

To overdrive the

REF

(1.9 V .. 2.7 V) maxi ± 1 mA is needed.

5)

I

S

=

I

P

/

N

S

.

6)

Only due to

TCR

IM

.

Application domain

•

Industrial.

Copyright protected

page 1/3

070307/10

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

w w w .lem.com

Current Transducer LTSR 6-NP

General data

T

A

T

S

m

Ambient operating temperature

Ambient storage temperature

Insulating material group

Mass

Standards

7)

- 40 .. + 85

- 40 .. + 100

III a

10

EN 50178: 1997

IEC 60950-1: 2001

°C

°C

g

Isolation characteristics

V

d

V

W

V

e

dCp

dCl

CTI

Rms voltage for AC isolation test, 50/60 Hz, 1 min

Impulse withstand voltage 1.2/50 µs

Rms voltage for partial discharge extinction @ 10pC

Creepage distance

Clearance distance

9)

Comparative Tracking Index (Group III a)

8)

3

>8

Mini

> 1.5

Mini

15.35

6.2

175

kV

kV

kV

mm

mm

Application examples

According to EN 50178 and IEC 61010-1 standards

and following conditions:

•

Over voltage category OV 3

•

Pollution degree PD2

•

Non-uniform field

EN 50178

dCp, dCI,

V

W

Single isolation

Reinforced isolation

Notes:

7)

IEC 61010-1

Nominal voltage

600 V

300 V

Rated isolation voltage

600 V

300 V

8)

9)

Specification according to IEC 1000-4-8 not adhered to in DC, error

according to two axes 1.5% instead of 1%.

On housing.

On PCB with soldering pattern UTEC93-703.

Safety

This transducer must be used in electric/electronic equipment with respect to

applicable standards and safety requirements in accordance with the manufacturer's

operating instructions.

Caution, risk of electrical shock

When operating the transducer, certain parts of the module can carry hazardous

voltage (eg. primary busbar, power supply).

Ignoring this warning can lead to injury and/or cause serious damage.

This transducer is a built-in device, whose conducting parts must be inaccessible

after installation.

A protective housing or additional shield could be used.

Main supply must be able to be disconnected.

page 2/3

070307/10

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

w w w .lem.com

Dimensions LTSR 6-NP

(in mm. 1 mm = 0.0394 inch)

Operation principle

Bottom view

Model + N° SP

Date code

Front view

Back view

Number

of primary

turns

Primary nominal

current rms

I

PN

[ A ]

±6

Nominal

10)

output voltage

V

OUT

[ V ]

2.5 ± 0.625

Right view

Primary

resistance

R

P

[ mΩ ]

0.18

Primary

insertion inductance

L

P

[ µH ]

0.013

IN

1

6

2

5

3

4

OUT

Recommended

connections

6

5

4

OUT

1

2

±3

2.5 ± 0.625

0.81

0.05

IN

1

6

2

5

3

4

OUT

3

±2

2.5 ± 0.625

1.62

0.12

IN

1

2

3

Mechanical characteristics

•

General tolerance

•

Fastening & connection of primary

•

•

± 0.2 mm

6 pins 0.8 x 0.8 mm

1.3 mm

4 pins 0.5 x 0.35 mm

0.8 mm

∅

3.2 mm

Output Voltage - Primary Current

V

OUT

[ V ]

5

4.5

3.125

2.5

1.875

0.5

Recommended PCB hole

Fastening & connection of secondary

Recommended PCB hole

Additional primary through-hole

Remarks

•

•

•

V

OUT

is positive when

I

P

flows from terminals 1, 2, 3 to terminals

6, 5, 4

For the EMC, the acceptance criteria are available on request

Temperature of the primary jumper should not exceed 100 [°C].

10)

-

I

Pmaxi

-

I

PN

0

I

PN

I

Pmaxi

I

P

[ At ]

page 3/3

Note:

Output voltage when LTSR 6-NP is used with internal reference.

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

070307/10

w w w .lem.com