μTURTLE-I Wireless Current Sensor

Installation Example

Battery-free
Internal capacitors store energy needed for measurement and wireless communication from CT.
Runs on current (minimum 10% of rated current), without requiring a power supply.
(AC adapter recommended if current is under 10% of rated current, or if current fluctuates significantly.)
Standalone measurement and wireless transmission
Measurement device with integrated wireless communication, without needing an add-on unit.
CT can be chosen according to attachment cable.
(Also available as unit with separate CT.)
Easy to attach
Simply attach CT to cable for measurement.
Models with separate CT are ideal for installing where space is at a premium.

Parts and Dimensions

*CT available in three sizes. φ16mm size is shown.

Item	Specification	Remarks
Measurement object ¹	Current	Single-phase
Rated current	50 – 500 A	Refer to table below
Frequency	50/60Hz
Sampling interval	50 μs
Accuracy	±1.0% F. S.	Sinusoidal input of commercial frequency
Effective input range	10% – 100% F. S.	Sinusoidal input of commercial frequency
Power supply	Self-powered	Min. 10% of rated current
Transmission format	315 Mhz specified low-power radio
LED	On when unit is operable
Operating temperature range	-10 – 50 °C
Usable humidity range	80% RH	Condensation-free
Optional accessories	AC adapter	Use when self-powered operation not available
Crest factor	2.2	At rated input

¹ Measurement value is true effective value.

CT Inner Diameter (mm)	Rated Current (A)				Dimensions (mm)	Weight (g)
CT Inner Diameter (mm)	50	100	300	500	Dimensions (mm)	Weight (g)
16	○	○			68 (D) × 97 (W) × 42 (H)	140
24			○		68 (D) × 114 (W) × 42 (H)	270
36	○			○	68 (D) × 132 (W) × 42 (H)	350