CKSR 25-NP LEM USA Inc, CKSR 25-NP Datasheet - Page 2

• Manufacturer Part Number: CKSR 25-NP
• Description: SENSOR CURRENT 25A 5V MOD
• Manufacturer: LEM USA Inc
• Series: CKSRr

Specifications of CKSR 25-NP

• Current - Sensing: 25A
• Accuracy: ±0.8%
• Sensitivity: 25mV/A
• Current - Supply: -
• Sensor Type: Flux Gate
• Voltage - Supply: 4.75 V ~ 5.25 V
• Output: 0 ~ 5 VDC
• Frequency: 300kHz
• Response Time: 300ns
• Polarization: Bidirectional
• Operating Temperature: -40°C ~ 105°C
• Package / Case: Module
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 398-1097-5

CAS / CASR / CKSR series Current Transducers
Insulated Highly Accurate Measurements from 1.5 to 50 A
The Power Electronics market is in constant change and
always on the lookout for new technologies and better
performance driving our progress. To enable applications
with enhanced performance, current measurement must
always been made with the best possible performance
also allowing to the final application to differentiate itself
from all the others.
This is the human nature and allows the progress of
technology.
With the LTS / LTSR current transducers using the Closed
Loop Hall effect technology coupled with a dedicated
ASIC (Application Specific Integrated Circuit) specially
designed for these products, we thought we had reached
the optimal performance, but this was without taking the
eternal human nature into account.
The market required even better accuracy over the
temperature ranges maintaining a low price and LEM
decided to achieve this goal.
A few months later, LEM delivers the solution with the
CAS / CASR / CKSR current transducers series covering
nominal current measurements from 1,5 to 50 A
To respond to these new challenges, the Hall effect
technology was no longer the solution. Even if used
in a Closed Loop configuration and with the use of a
dedicated ASIC as done with the LTS family which allowed
a substantial performance improvement notably for the
accuracy and the size.
Fluxgate technology was selected enabling both possible
targets: the improvement in accuracy and the low price.
2
Future precision.
Future performances.
Now available.
RMS
.
Without compromising the advantages of the LTS product
such as size, dynamic performances, high measuring
range, ect.
LEM has already been using multiple Fluxgate technologies
in the past and it was just a question to find the one making
the best comprise between price, size and performances.
In order for the products to be able to work in the typical
industrial applications, the insulation criteria needed to be
respected and a particular attention has then been brought
to the mechanical design of the product.
Although we were able to reduce the size even when
nobody thought it could still be done, the insulation
performances
applications without particular mounting with a rated
insulation voltage up to 1000 V
according to EN 50178 standard with following parameters:
OV 3, PD2).
The CAS / CASR / CKSR models have been specially
designed to respond to the technology advances in drives
and inverters in industrial environment requiring better
performances in areas such as:
• Common mode influence
• Thermal drift (offset and gain)
• Accuracy (in the whole temperature range)
• Response time
• Insulation
• Size
allow
usage
in
RMS
RMS
standard
(Simple isolation
industrial