Datasheet > LA255-S

LA255-S

更新时间： 2024-11-05 22:47:19

品牌	Logo	应用领域
莱姆 - LEM		传感器
页数	文件大小	规格书
2页	70K
描述
Current Transducer LA 255-S

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中文翻译

获取价格

数据手册

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LA255-S 数据手册

Current Transducer LA 255-S

I_PN= 250 A

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

I_P

Î_{P max}

R_M

Primary nominal r.m.s. current

Primary current, measuring range

Measuring overload ¹⁾

250

0 .. ± 500

600

Features

· Closed loop (compensated) current

transducer using the Hall effect

· Insulated plastic case recognized

according to UL 94-V0.

Measuring resistance @

T_A= 70°C

R_{M min}R_{M max}R_{M min}R_{M max}

T_A= 85°C

with ± 12 V

with ± 15 V

with ± 18 V

@ ± 250 A _max

@ ± 500 A _max

@ ± 250 A _max

@ ± 500 A _max

@ ± 250 A _max

@ ± 500 A _max

Advantages

· Excellent accuracy

· Very good linearity

25 93

25 29

25 91

25 27

· Low temperature drift

· Optimized response time

· Wide frequency bandwidth

· No insertion losses

· High immunity to external

interference

I_SN

K_N

V_C

I_C

Secondary nominal r.m.s. current

Conversion ratio

Supply voltage (± 5 %)

Current consumption

R.m.s. rated voltage ²⁾, safe separation

basic isolation

125

1 : 2000

± 12 .. 18

20(@±15 V)+ I_SmA

1625

3250

V_b

· Current overload capability.

Accuracy - Dynamic performance data

Applications

X_G

Overall accuracy @ I_PN, T_A= 25°C

Linearity

± 0.8

< 0.1

· 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.

Typ

Max

± 0.15 mA

± 0.50 mA

I_O

I_OM

I_OT

Offset current @ I_P= 0, T_A= 25°C

Residual current ³⁾@ I_P= 0, after an overload of 3 x I_PN

Thermal drift of I_O

- 10°C .. + 85°C

± 0.15 ± 0.30 mA

t_ra

t_r

Reaction time @ 10 % of I_{P max}

Response time ⁴⁾@ 90 % of I_{P max}

< 500

< 1

> 100

DC .. 100

µs

A/µs

kHz

di/dt di/dt accurately followed

Frequency bandwidth (- 3 dB)

General data

T_A

T_S

R_S

Ambient operating temperature

Ambient storage temperature

Secondary coil resistance @

- 10 .. + 85

- 40 .. + 90

110

°C

T_A= 70°C

T_A= 85°C

Mass

Standards

EN 50178

Notes : 3 mn/hour @ V_C= ± 15 V, R_M= 5 W

Pollution class 2. With a non insulated primary bar which fills the

through-hole

The result of the coercive field of the magnetic circuit

With a di/dt of 100 A/µs

A list of corresponding tests is available

980707/3

LEM Components

www.lem.com

中文翻译

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