CT25-T データシートの表示（PDF） - LEM Industrial

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CT25-T

Current Transducer CT 5 .. 25-T

LEM Industrial 

Current Transducer CT 5 .. 25-T

For very accurate measurements of currents : DC, AC, pulsed...,

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

and the secondary circuit (electronic circuit).

IPN = 5 .. 25 A

0632

Electrical data

Primary nominal

current

IPN (A r.m.s.)

Primary current,

measuring range

IP (A)

5

7.5

10

15

25

37.5

V

OUT

RL

C

L

tC

V

C

IC

Analog output voltage

Load resistance

Capacitance loading

Output short-circuit duration 1)

Supply voltage (± 5 %)

Current consumption

Conversion

ratio

K N (A/V)

5 A/5 V

10 A/ 5 V

25 A/5 V

Accuracy - Dynamic performance data

X

Overall accuracy @ I

G

PN

- 25°C .. + 70°C

VO

Offset voltage @ I P = 0

TA = 25°C

- 25°C .. + 70°C

f

Frequency bandwidth (- 3 dB) @ 10 % of I

PN

tr

Response time

General data

TA

Ambient operating temperature

T

Ambient storage temperature

S

m

Mass

Standards

Type

CT 5-T

CT 10-T

CT 25-T

5

V

> 500

Ω

≤5

nF

∞

s

± 15

V

30 + VOUT / RL mA

± 0.1

%

Max

± 0.4

mV

± 0.6

mV

DC .. 500

kHz

<1

µs

- 25 .. + 70

°C

- 40 .. + 85

°C

670

g

EN 50178 : 1996

Features

• Closed loop (compensated) current

transducer

• Insulated plastic case recognized

according to UL 94-V0

• Patent pending.

Advanced features

• f = 500 kHz

• X G = ± 0.1 % (- 25°C .. + 70°C).

Advantages

• Excellent accuracy

• Very good linearity

• Low temperature drift

• Optimized response time

• Wide frequency bandwidth

• No insertion losses

• High immunity to external

interference

• Current overload capability.

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.

Note :

1) If the short-circuit has a duration more than 1 s, the primary current of

the supply voltage must be interrupted for a short time to restore the

transducer to proper working order. The internal protection is done by

PTC resistors.

Application domain

• Industrial.

060927/0

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

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