This closed loop current sensor provides excellent performance at affordable prices.
Accuracy at +25
General Information
the primary (high current) and secondary circuits. It has four integral primary pins.
Nominal Current (I
Measuring Range
Measuring Resistance .............................................................................. R min.
Nominal Analog Output Current ................................................................ 25 mA
Turns Ratio.............................................................................................. 1-2-3-4/1000
Supply Voltage ....................................................................................... ±15 Vdc (+5%)
Galvanic Isolation .................................................................................... 5 kV RMS/50 Hz/1 minute
Zero Offset Current at + 25
Thermal Drift of offset Current O
Linearity ................................................................................................. better than ±0.2%
Response Time ....................................................................................... less than 1 ms
Bandwidth............................................................................................... DC to 200 kHz (-1dB)
Operating/Storage Temperature ............................................................... -40
Current Consumption ............................................................................... 10 mA plus output current
Secondary Internal Resistance (at + 70
Primary Internal Resistance ..................................................................... <1.25 milliohm per turn
Weight ................................................................................................... 17 g maximum
Package ................................................................................................. Insulated plastic case (UL94-VO)
Mounting ................................................................................................ Designed to mount directly on PCB via
Output Reference .................................................................................... To obtain a positive output on the terminal marked
[1] = The CLS-25 offers a choice of 4 measuring ranges (refer to the mechanical dimensions on the following page)
[2] = For 2 seconds only
[3] = Excludes the effect of zero offset
[4] = Over the operating range ±50 A.t.
Description
The CLS-25 is a reduced size current transducer based on the principle of
magnetic compensation. It provides electronic measurement of DC, AC
or pulsed currents, and their combinations, with galvanic isolation between
Features
• Noncontact measurement of high current
• Measures DC, AC and impulse currents
• Current sensing up to 400A peak
• Very fast response and high accuracy
• High overload capacity
Electrical Specifications
Notes:
Model CLS-25
• PC board mount
o
[1]
C
N
[3][4]
) ................................................................................ 25 A.t RMS
.................................................................................. 0 to ± 50 A.t (± 62 A.t)
with ±15V at ±25 A.t Max. ...................................... 54 ohm
............................................................................ 0.5% of I
o
C ............................................................... better than ±0.15mA
o
C to 70
at ±50 A.t Max. ...................................... 54 ohm
at ±90 A.t Max. ...................................... 54 ohm
o
C) ............................................... 66 ohm
o
C ............................................... better than ±0.6mA
Applications
• Variable speed drives for motors
• Welding Equipment
• Power supply Equipment
• Measure and control system
• Over current protection
• Protection of power semiconductors
Closed Loop Hall Effect
hole connection pins.
“O”, current must flow from terminals 1,2,3,4 to
terminals 8,7,6, and 5 (conventional flow).
CLS-25
o
C to + 85
N
Max.
R max.
360 ohm
150 ohm
54 ohm
o
C/-40
o
C to + 90
[2]
o
C