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30/300/3000 A AC flex current probe, BNC connector

The TA326 is an AC current probe utilizing the Rogowski coil principle, used to measure AC current up to 3000 A when used with oscilloscopes, recorders or data loggers. The flexible probe allows current measurements on hard-to-reach conductors.

Rogowski coil technology has a couple of advantages over CT (current transformer) technology: when measuring multiple phases, the phase difference is small and predictable for higher frequency harmonic analysis applications; also, Rogowski coils do not have magnetic materials to saturate and so have excellent linearity.

The probes provide a 3 V full-scale AC output proportional to the current being measured with three selectable ranges: 30 A, 300 A and 3000 A.

If the TA326 is intended for use with a PicoScope 4444 differential scope, ensure that you also purchase a TA271 D9-BNC adaptor. This can be found under the Accessories tab on this page.

^£279

Title	Language	Issue	Size	Updated	All products	All languages	All documents	Status
TA325/TA326 AC current probes user’s guide	English Français Deutsch Italiano Español	1	2 MB	Jan 18 2017		english french german italian spanish		open
TA325 and TA326 Flex Current Probes EU Declaration of Conformity	English	1	291 KB	Mar 30 2017		english		open

Accessories for the 30/300/3000 A AC flex current probe, BNC connector

Product		Price	Quantity
	D9 to single BNC adaptor TA271	^£15

TA325 and TA326 flex current probe specifications
Measuring ranges	30 A / 300 A / 3000 A AC
Output sensitivity (AC coupled)	100 mV / 10 mV / 1 mV per A
Accuracy (45 to 65 Hz)	±1% of reading ±0.1 A 30 / 300 A ±1% of reading ±1 A 3000 A
Minimum load	100 kΩ for specified accuracy
Frequency range	10 Hz to 20 kHz (–1 dB)
Phase (45 to 65 Hz)	< ±1°
Position sensitivity	±2% of reading
External field	±0.25% of range with cable > 100 mm from the probe
Noise	80 mA RMS 30 A 400 mA RMS 300 A / 3000 A
Temperature coefficient	±0.1 %/°C
Power supply	Two AA MN1500 LR6 alkaline batteries or an external power supply (+3 V / 100 mA)
Battery life	1000 hours typical (TA325) 2000 hours typical (TA326)
External power	Via 2.1 mm (0.08") mini power connector
Low battery	Indicated by an orange LED
Overload	Indicated by a red LED
Enclosure
Material	ARNITE T06-200SNF, UL94 V0
Degree of protection	IP40
Dimensions	110 (L) x 65 (W) x 23 (D) mm
Output connection	0.5 m coax cable with a shrouded BNC connector
Probe
Probe length	610 mm (24”), double-insulated
Probe diameter	9.9 mm (0.39”)
Output cable	2 m (78.7”), probe to integrator
Material	Alcryn 2070 NC, LATI LATENE 7H2W V0
Degree of protection	IP65
General characteristics
Operating temperature	–20 °C to +65 °C (–4 °F to +149 °F)
Storage temperature	–40 °C to +75 °C (–40 °F to +167 °F)
Operating humidity	15% to 85% (non-condensing)
Safety standards	EN 61010-1 EN 61010-2-032
EMC	EN 61326-2-2

1000 V RMS CAT III, 600 V RMS CAT IV
Pollution Degree 2 (probe and integrator)
30 V maximum between output and ground
RoHS and WEEE compliant
Rated for continuous use