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Rongtech Industry (Shanghai) Inc.,
RTC300B close loop current sensor

RTC300B close loop current sensor

Product catalog summary

Overview: The RTC300B series current sensor by Rongtech Industry (Shanghai) Inc. is a closed loop device utilizing the Hall effect and null balance method. It offers galvanic isolation between primary and secondary circuits, enabling precise measurement of DC, AC, or pulsed currents.

Electrical Specifications:

Rated Input (Ipn): Ranges from 50A to 400A depending on the model (RTC50B to RTC400B).
Measurement Range (Ip): Varies from 150A to 1200A with different resistance values.
Turns Ratio (Np/Ns): Varies from 1:1000 to 1:4000.
Rated Output (Isn): 100mA ±0.5% for most models.
Coil Resistance @70℃: Ranges from 20Ω to 54Ω.
Supply Voltage: ±12V to ±18V.
Power Consumption: ≤20+IpX(Np/Ns) mA.
Zero Offset: ≤±0.15 mA at Ip=0.
Zero Drift: ≤±0.4 mA from -40℃ to +85℃.
Linearity: ≤0.1%FS at Ip=0-±Ipn.
Bandwidth: 0 to 150 kHz @ -1dB.
Response Time: ≤1 μS for 100A/μS, 10%-90%.
Galvanic Isolation: 3 kV @ 50Hz, AC, 1min.

Applications: Suitable for AC variable speed drives, static converters for DC motor drives, power supplies for welding applications, battery-supplied applications, UPS, and SMPS.

General Data:

Operating Temperature: -40 to +85 ºC.
Storage Temperature: -40 to +125 ºC.
Mass: Approximately 40g.

Mechanical Dimensions: All dimensions are in mm with a general tolerance of ±1mm.

Directions for Use:

Ensure current flows according to the arrowhead direction for correct phase output.
Incorrect wiring may damage the sensor.
Custom designs are available for different rated input and output currents.

Standards: Complies with UL94-V0, EN60947-1:2004, IEC60950-1:2001, EN50178:1998, and SJ 20790-2000.

Characteristics Chart: Includes pulse current signal response and effects of impulse noise.

Terminal Pin Identification:

1: +15V
2: -15V
3: IOUT
4: NC

Catalog excerpts

The RTC300B series current sensor is a closed loop device based on the measuring principle of the hall effect and null balance method, with a galvanic isolation between primary and secondary circuit. It provides accurate electronic measurement of DC, AC or pulsed currents.

Open the catalog to page 1

Rongtech Industry(ShangHai) Inc., RTC300B Series Closed Loop Mode Hall Effect Current Sensor Mechanical dimension(for reference only) BA Remarks：1. All dimensions are in mm. 2. General tolerance ±1mm. Directions for use 1. When measure current flows according to the direction of the arrowhead, Output terminal gets the same phase current. 2. When the current will be measured goes through a sensor, the current will be measured at the output end. (Note: The false wiring may result in the damage of the sensor) 3.Custom design in the different rated input current and the output current are available....

Open the catalog to page 2

RTC300B close loop current sensor

RTC300B close loop current sensor

Catalog excerpts

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