LF305-S_06 [LEM]
Current Transducer; 电流传感器
| 型号： | LF305-S_06 |
| 厂家： | 
LEM |
| 描述： | Current Transducer |
| 文件： | 总3页 (文件大小：185K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Current Transducer LF 305-S
IPN = 300 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).
16167
Electricaldata
IPN
IPM
RM
Primary nominal current rms
Primary current, measuring range
Measuring resistance
300
0 .. ± 500
RM mini
A
A
Features
RM maxi
· Closed loop (compensated) current
transducer using the Hall effect
· Isolated plastic case recognized
according to UL 94-V0.
with ± 12 V
with ± 15 V
with ± 20 V
@ ± 300 A max
0
0
0
0
15
15
39
12
58
22
93
45
W
W
W
W
W
W
@ ± 500 A max
@ ± 300 A max
@ ± 500 A max
@ ± 300 A max
@ ± 500 A max
Advantages
· Excellent accuracy
· Very good linearity
ISN
KN
VC
IC
Secondary nominal current rms
Conversion ratio
Supply voltage (± 5 %)
Current consumption
150
1 : 2000
± 12 .. 20
26 (@±20V)+IS mA
mA
· Low temperature drift
· Optimized response time
· Wide frequency bandwidth
· No insertion losses
· High immunity to external
interference
V
Accuracy - Dynamic performance data
X
Overall accuracy @ IPN , TA = 25°C
Linearity error
± 0.4
< 0.1
%
%
eG
· Current overload capability.
L
Typ Maxi
Applications
IO
Offset current @ IP = 0, TA = 25°C
± 0.20 mA
IOM
Magnetic offset current1) @ IP = 0 and specified RM,
after an overload of 3 x IPN
· AC variable speed drives and servo
motor drives
· Static converters for DC motor drives
· Battery supplied applications
· Uninterruptible Power Supplies
(UPS)
± 0.08 mA
± 0.1 ± 0.30 mA
IOT
tra
Temperature variation of IO
- 10°C .. + 70°C
Reaction time @ 10 % of IPN
Response time 2) to 90 % of IPN step
< 500
< 1
ns
µs
t
r
di/dt di/dt accurately followed
BW Frequency bandwidth (- 1 dB)
> 100
DC .. 100
A/µs
kHz
· Switched Mode Power Supplies
(SMPS)
· Power supplies for welding
applications.
General data
TA
TS
RS
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @ TA = 70°C
- 10 .. + 70
- 25 .. + 85
25
°C
°C
W
g
Applicationdomain
Mass
95
· Industrial.
Standards
EN 50178: 1997
1)
Notes:
The result of the coercive field of the magnetic circuit
With a di/dt of 100 A/µs.
2)
page1/3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
061031/7
Current Transducer LF 305-S
Isolationcharacteristics
Vd
Rms voltage for AC isolation test, 50/60 Hz, 1 mn
Impulse withstand voltage 1.2/50 µs
3.8
10
kV
kV
V
w
dCp
dCl
CTI
Creepage distance
Clearance distance
Comparative Tracking Index (Group II)
11.9
11.5
175
mm
mm
Applicationexamples
According to EN 50178 and IEC 61010-1 standardsand following conditions:
· Over voltage category OV 3
· Pollution degree PD2
· Non-uniform field
EN 50178
Rated isolation voltage
1000 V
IEC 61010-1
Nominal voltage
1000 V
V
dCp, dCI,
W
Single isolation
Reinforced isolation
500 V
500 V
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.
page2/3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
061031/7
Dimensions LF 305-S (in mm. 1 mm = 0.0394 inch)
Connection
Bottom view
Right view
Back view
Top view
Mechanicalcharacteristics
Remarks
· General tolerance
· Transducer fastening
Vertical position
± 0.5 mm
· IS is positive when IP flows in the direction of the arrow
· Temperature of the primary conductor should not exceed
100°C
2 holes Æ 4.3 mm
2 steel screws M4
Recommended fastening torque 3.2 Nm or 2.37 Lb.-Ft.
4 holes Æ 1.9 mm, depth : 7 mm
4screwsPTKA25, length:6mm
Recommended fastening torque 0.7 Nm or 0.52 Lb.-Ft.
· Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole
· This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
or
Flat lying position
4 holes Æ 4.3 mm
4 steel screws M4
Recommended fastening torque 2.9 Nm or 2.14 Lb.-Ft.
or
4 holes Æ 1.9 mm, crossing
4 screws PTKA 25, length:10 mm
Recommended fastening torque 0.75 Nm 0.55 Lb.-Ft.
· Primary through-hole
Æ 20 mm
· Connection of secondary
Molex5045-03/A
page3/3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
061031/7
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