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R718N37D Wireless 3-phase Current Meter with 3 x 75A Clamp-On CT

   

R718N37D, the three-phase current meter, is to detect the current of three-phase load. The device is compatible with the LoRaWan protocol and equipped with a wireless communication module to display the collected data in the gateway. The R718N3xxD(E) series is powered by DC and receives AC through the solid-core/clamp-on current transformers (CTs), which proportionally convert high-voltage current in the primary winding into lower-value current into the second winding.

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R718N37D, the three-phase current meter, is to detect the current of three-phase load. The device is compatible with the LoRaWan protocol and equipped with a wireless communication module to display the collected data in the gateway. The R718N3xxD(E) series is powered by DC and receives AC through the solid-core/clamp-on current transformers (CTs), which proportionally convert high-voltage current in the primary winding into lower-value current into the second winding.

• Clamp-on current transformers
• DC power supply (input: AC 100V to 240V 50/60Hz; output: DC 3.3V/1A)
• IP30 main body and sensor
• Magnetic base
• SX1276 wireless communication module
• LoRaWAN™ Class C compatible
• Configuring parameters and reading data via third-party software platforms, and set alarms via SMS text and email (optional)
• Available third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne

Electric:

Power Supply

DC 3.3V/1A

Power Consumption

≤ 0.5W

RF Receiving Current

11mA / 3.3V

RF Emission Current

120mA / 3.3 V

Current Measurement Accuracy

< ± 1% (within 300mA to 75A)

Current Resolution

1mA

Current Measurement Accuracy and Range

100mA to 75A

Clamp-on CT Rated Primary Current

30A, 50Hz to 60Hz

Clamp-on CT Rated Secondary Current

10mA

Clamp-on CT Saturation Current

≥75A

Clamp-on CT Ratio

3000: 1

Clamp-on CT Load Resistance

10 Ω

Clamp-on CT Accuracy

1%

Clamp-on CT Electrical Strength

3000V

Clamp-on CT Housing Material

Flame Retardant Grade 94-V0 UL Material

Clamp-on CT Environmentally Friendly

ROHS compliant

Clamp-on CT Operating Temperature

-40 ℃ to 85 ℃

Frequency:

Frequency Range

863MHz-928MHz 470MHz-510MHz

Power Output

19dBm±1dBm (max)

TX Power

US915 20dbm
AS923 16dbm
AU915 20dbm
CN470 19.15dbm
EU868 16dbm
KR920 14dbm
IN865 20dbm

Receiving Sensitivity

-136dBm (LoRa, Spreading Factor=12, Bit Rate=293bps)
-121dBm (FSK, Frequency deviation=5kHz, Bit Rate=1.2kbps)

Antenna Type

Built-in antenna

Communication Distance

10 km (The actual transmission distance depends on the environment.)

Data Transfer Rate

LoRa: 0.3kbps to 50kbps
FSK: 1.2kbps to 300kbps

Modulation

LoRa / FSK (Note: Please choose one modulation method.)

Available LoRaWAN Band

EU863-870, US902-928, AU915-928, KR920-923, AS923-1, AS923-2, AS923-3,
IN865-867, CN470-510

(Note: optional, to be configured before shipment)


Physical:
Dimensions

Main body:112mm (L) x 88.19mm (W) x 32mm (H)
Sensor: 27.5mm (L) x 25mm (W) x 42.5mm (H)

Main body Weight

About 141g
Sensor Weight

About 49.6*3g

Sensor Cable Length

CT (undetachable cable): about 900mm
CT (detachable cable):1200mm

Ambient Temperature Range

-20°C to 55°C
Storage Temperature

-40°C to 85°C

Ambient Humidity Range

<90%RH (No condensation)

Mounting

Screw / Magnet