Precision AC Current Shunts
AC Current Shunts of CS series
Reference-class reactance-free current shunts
Developed as a domestic alternative to the A40B Current Shunts (No 51518-12) produced by Fluke Corporation, USA
The shunts are manufactured in various configurations depending on the rated current and resistance.
Rated currents: from 10 mA to 100 A
Target users
State Institutes for metrology
Application
Alternative to Fluke A40B Current Shunts
The Fluke А40B current shunts (USA) are known as the most precision devices operating in the range from DC to 100 kHz current which are in most common use among state metrology institutes all over the world.
The shunts measure current from 1 mA to 100 A providing an output voltage of 0.8 V at a rated load.
The “squirrel cage” principle underlying the design of the shunts has been originally developed in the “Electrical Power Measurements” laboratory of the D.I. Mendeleev Institute for Metrology. Later such a design became a common practice around the world.
The design and characteristics of the reference-class reactance-free shunts CS and Fluke А40B are identical. The SC shunts are entirely manufactured in Russia. They have been used as part of state standards in Russia and other countries over many years. Each shunt is calibrated in the D.I. Mendeleev Institute for Metrology.
In the sphere of mass-scale calibration, the CS shunts serve as a modern alternative to high-precision measures of electrical resistance and AC thermal converters. The shunts can be used for calibration of the following precision measuring instruments:
|
Tested device |
Registry number |
|
Multimeters 8508A (Fluke, USA) |
25984-14 |
|
Calibrators 5500A (Fluke, USA) |
20211-00 |
|
Calibrators 5500A (Fluke, USA) |
20211-06 |
|
Calibrators 5502A(Е) ((Fluke, USA) |
55804-13 |
|
Calibrators 5520А (Fluke, USA) |
23346-02 |
|
Calibrators 5520А (Fluke, USA) |
29282-05 |
|
Calibrators 5522A (Fluke, USA) |
51160-12 |
|
Calibrators 3010, 3041, 3050 (Transmille Ltd., UK) |
34284-07 |
|
Calibration system 5051 Plus (Time Electronics, UK) |
25200-03 |
|
Calibrators 5700А, 5720А with amplifier, 5725A (Fluke, USA) |
52495-13 |
|
Calibrators 5080A (Fluke, USA) |
52496-13 |
|
General-purpose calibrators N4-7, N4-7/1 (“RITM”, Krasnodar, Russia) |
22125-01 |
Basic specifications
|
Parameter |
Value |
|
Limits of permissible relative error in measuring resistance at rated frequency |
±0,005 % |
|
Limits of permissible additional relative error in measuring resistance caused by self-heating |
±0.003 %, or less |
|
Limits of permissible additional error caused by change in frequency within the operating range |
±0,5·10–6 %/kHz |
|
Limits of permissible phase shift caused by current-to-voltage conversion at 50 Hz |
±1 µrad |
|
Temperature Coefficient of Resistance (TCR) |
1,0·10–6 К–1, or less |
|
Frequency-dependent phase error |
60 µrad/kHz, or less |
Highlights
|
|
The design of the shunts provides for minimal:
|
|
|
Time of continuous operation at a current below 120% of the rated current is unlimited. |
|
|
Average lifetime is no less than 10 years. |
Modifications
|
Rated current |
0,1 А |
|
Rated resistance value |
10,0 Ohm |
|
Overall dimensions |
70 * 70 mm, or less |
|
Rated current |
0,5 А |
|
Rated resistance value |
2,0 Ohm |
|
Overall dimensions |
111 * 210 mm, or less |
|
Rated current |
1,0 А |
|
Rated resistance value |
1,0 Ohm |
|
Overall dimensions |
111 * 210 mm, or less |
|
Rated current |
2,5 А |
|
Rated resistance value |
0,4 Ohm |
|
Overall dimensions |
202 * 210 mm, or less |
|
Rated current |
5,0 А |
|
Rated resistance value |
0,2 Ohm |
|
Overall dimensions |
202 * 210 mm, or less |
|
Rated current |
10,0 А |
|
Rated resistance value |
0,1 Ohm |
|
Overall dimensions |
202 * 210 mm, or less |
|
Rated current |
50,0 А |
|
Rated resistance value |
0,016 Ohm |
|
Overall dimensions |
202 * 210 mm, or less |
|
Rated current |
100,0 А |
|
Rated resistance value |
0,008 Ohm |
|
Overall dimensions |
200 * 200 * 335mm |
Scope of supply:
Accessories are supplied in accordance with the purchase order.