ADVANCED METROLOGY SOLUTIONS PRECISION AC/DC COAXIAL SHUNTS OVERVIEW & SPECIFICATIONS www. transmille.com

TRANSMILLE PRECISION AC/DC SHUNTS

TRANSMILLE PRECISION AC/DC SHUNTS Introduction Transmille precision coaxial AC/DC current shunts enable measurement of current from 1mA through to 100A. Each shunt develops 0.7V at nominal full scale, enabling a wide range of multimeters to be used without loss of resolution due to changing range. Coaxial Shunt The AC/DC current shunts provide excellent DC value stability, but also a wide range in frequency allowing measurements from DC up to and beyond 30kHz. The coaxial design of these shunts reduce inductive and capacitive effects, while an open design improves heat dissipation to minimize...

TRANSMILLE PRECISION AC/DC SHUNTS Electrical Specifications Resistance Shunt Nominal Current Nominal Resistance (ohms) Maximum deviation from nominal (± uΩ/Ω) [1] 0.714 Ω 0.0714 Ω 0.035 Ω 0.014 Ω 0.00714 Ω 0.0035 Ω 0.0014 Ω 714 uΩ 350 uΩ 140 uΩ 17.4 uΩ 35 uΩ 70 uΩ 35 uΩ Maximum AC-DC Difference Shunt Nominal Current 1 mA 10 mA 20 mA 50 mA 100 mA 200 mA 500 mA 1A 2A 5A 10 A 20 A 50 A 100 A Maximum AC-DC Difference (± ppm) [1] 23 Hz [1] Performance by design. There are no adjustments possible and physical damage will affect the AC-DC Difference permanently

TRANSMILLE PRECISION AC/DC SHUNTS Maximum Overload Current Shunt Nominal Current Maximum current [1] [2] Maximum sustained current 1 mA 3 mA 2 mA 10 mA 13 mA 11 mA 20 mA 36 mA 22 mA 50 mA 65 mA 55 mA 100 mA 130 mA 110 mA 200 mA 360 mA 220 mA 500 mA 650 mA 550 mA 1A 1.3 A 1.1 A 2A 3.6 A 2.2 A 5A 6.5 A 5.5 A 10 A 13 A 11 A 20 A 36 A 22 A 50 A 65 A 65 A 100 A 130 A 110A [1] Longer than 7 seconds can cause permanent damage to the shunt. The output voltage during high levels of input of can significantly cause higher outputs. [2] Exceeding the maximum sustained current may cause resistance value changes...

TRANSMILLE PRECISION AC/DC SHUNTS Input / Output Connections Small Form Factor AC/DC Current Shunt Size Weight Input Current Connection Output Voltage connection

TRANSMILLE PRECISION AC/DC SHUNTS Large Form Factor AC/DC Current Shunt Size Weight Input Current Connection 224mm x 222mm x 320mm 2.7kg Up to 10A : Type ‘N’ Connector 20A, 50A & 100A : LC Connector Output Voltage connection

TRANSMILLE PRECISION AC/DC SHUNTS Battery Powered Buffered AC/DC Current Shunt Size Weight Controls Indicators Internal Power Input Current Connection Output Voltage connection 65mm x 65mm x 110mm 0.2kg On / Off Switch Supply + : Supply – LED Indicators 2x 9V replaceable / non rechargeable PP3 Type BNC Connector BNC Connector

TRANSMILLE PRECISION AC/DC SHUNTS Operational Considerations  Avoid exceeding the maximum current rating of a shunt as this may cause tracks on the PCB (printed circuit board) to be damaged Check casing, PCB and terminals for any signs of damage or missing / broken material before use Take care not to damage shunts by operating beyond their specifications Use suitable test leads rated for the measurements being taken. Do not use test leads with any signs of damage – check test leads if necessary. High Voltages are NOT generated across the shunt unless excess current applied (even at 100A the...

TRANSMILLE PRECISION AC/DC SHUNTS Operational Overview Warning Ensure all equipment is powered off before connecting shunt to circuit. Always connect the shunt in series with the circuit. Before and during using the precision shunts, refer the specifications and ensure any maximum capabilities are not exceeded at any time. Current Measurement Overview 1: Check the circuit being tested and determine :   Current in circuit Frequency of current in circuit 2. Select a current shunt suitable for the current level as measured in circuit 3. Remove power from circuit before connecting shunt and connect...

TRANSMILLE PRECISION AC/DC SHUNTS Changing the batteries has no affect upon the calibration of the unit

We truly believe in offering Solutions in Calibration, offering bespoke solutions for calibration laboratories and manufacturers across the globe. Our mission statement is not just a phrase, it is our design and support philosophy, offering support and advice that cannot be found elsewhere with a friendly atmosphere. Transmille was founded in 1995 as a commercial calibration service, and soon after began to develop and manufacture a range of electrical calibration products and software to answer a growing requirement for solutions to common problems. Following this small beginning, Transmille...