Precision Shunts - 100 to 300 Amp

EXCELLENT STABILITY
ACCURACY TO 0.01 %
100, 200 OR 300 AMPS
LOW TEMPERATURE COEFFICIENTS
DC AND AC USE
RUGGED

The CS series precision shunts are designed for highly accurate measurements of current.

The CS shunts feature good long term stability and a low temperature coefficient of resistance. Although designed for laboratory use, they are rugged enough to be installed in environments subject to wide variations in temperature and to vibration or shock.

The CS shunts are of bifilar construction, with low reactance. They may be used with practically no degradation in accuracy at 50/60 Hz, and with close conformance at higher frequencies.

The temperature coefficient of resistance is less than 5 ppm/°C (CS-100 & CS-200); the CS-300 is less than 20 ppm/°C.

Connection is made via copper alloy posts. Internal bus construction minimizes connection errors common to many other shunts.

Every shunt includes ISO17025 accredited, NIST traceable calibration through full rated current. Customer specified measurement points can be provided on request.

Standard CS models are listed; other Amp/Volt combinations are available on request.

For the highest precision applications, a 100 ohm RTD can be bonded to the shunt element, and full current / temperature characterization can be provided. Please see the Temperature Option for an example of this characterization. Type T or thermistor sensors are also available.

Model	Amps	Ohms	Output	Accuracy*
CS-100	100	1 mΩ	0.1 V	0.01 %
CS-200	200	1 mΩ	0.2V	0.02 %
CS-300	300	0.1 mΩ	30 mV	0.025 %
For special values, use the below example:
CS-100-1	100	1 V		0.03 %
AC-DC Conformance (at 50 amps)
Frequency	AC-DC Diffference
60Hz	< 0.01 %
100 Hz	< 0.015 %
1 kHz	<0.1 %
Physical	30.5 x 25.1 x 7.6 cm (12 x 9.875 x 3 in), 3 kg (6 lbs)