LO-CTLS5 Flexible Rogowski Coil Current Sensor Series

The LO-CTLS5 Series Rogowski Coil is a flexible, non-intrusive current sensing solution designed for accurate measurement of AC currents from 100A up to 200kA. Based on the Rogowski principle, it provides a voltage output proportional to the rate of change of current (di/dt), enabling high linearity, wide dynamic range, and excellent transient response when paired with an integrator.

Product Introduction

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P/N: LO-CTLS5 Series Rogowski coil

>Product overview

With a bandwidth of 1Hz to 20kHz and precision up to 0.5 class accuracy, the CTLS5 series is ideal for power quality analysis, industrial monitoring, motor protection, welding equipment, and smart metering applications. Its flexible structure allows easy installation in tight or complex conductor layouts without the need for system shutdown, while eliminating the risk of open-circuit hazards.

The LO-CTLS5 series is designed for reliable operation in harsh environments, offering strong insulation performance, low power loss, and stable measurement characteristics across a wide temperature range.

>Application

⚡ Smart Energy Metering & Power Monitoring

🏭 Industrial Motor & Equipment Load Monitoring

🔥 Welding Machine Current Measurement

🔌 Power Quality Analysis & Harmonics Testing

🔋 Electric Furnace & High Current Busbar Monitoring

🚆 Railway / Inverter / Power Electronics Testing

>Standards

IEC 61010-1: 2010
IEC 61010-2-32: 2012
IEC 61869-10: 2017
UL 61010-1: 2012

>Electrical specifications:

Electrical specifications
Accuracy	0.50% ( Center position)
Position error	≤1%
Linearity	0.20%
Phase error	≤30' (50Hz)
Response bandwidth	1HZ-20KHZ
Temperature drift	≤1%
Cable length	2 Meters or Custom made
DC Bias	<0.15mV
Suitable operating voltage	AC1000V
Coil material	Silicon rubber
Secondary cable type	Shielded wire or customized
Dielectric strength	4KVAC/50Hz/60s
Insulation resistance	DC500V/100MΩ

>Dimensions

*P/N*	*INPUT* *(A)*	*Output*	*Accuracy*	*DIMENSIONS(mm)*
				Φ1	Φ2
LO-CTLS5	100-200KA	22.5mV/KA 50mV/KA 85mV/KA 100mV/KA @50Hz Customized	0.5	50	7.8
				80
				100
				150
				200
				250
				300
				350

78999

Working Temperature	-25°C to 75°C	Annual Average Relative Humidity	≤ 75% RH
Storage & Transport Temp.	-40°C to 70°C	Occasional Short-term Humidity	≤ 85% RH

> Installation & Handling Guidelines

To prevent structural deformation or internal core degradation that could compromise the sensor's accuracy class, the following instructions must be strictly followed during deployment:

Do Not Pull Forcefully: Avoid subjecting the coil or its lead wires to strong tensile forces during structural integration.

Do Not Bend Forcefully: The Rogowski loop must not be folded or kinked past its flexible architectural threshold.

No Cable-Tying Under Bent States: Do not apply cable ties or fasteners to secure the coil while it is forced into an unnatural shape or overly compressed form factor.

Proper Fixation: Always secure the device accurately around the target conductor loop via the dedicated mechanism. Avoid any mechanical puncturing, crushing, or high-pressure squeezing.