---
lang: "en"
title: "QI-300-V-485: TRMS AC/DC Current Transformer, 300A, 0-10V and RS485 Modbus Output"
sku: "QI-300-V-485"
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end_of_life: "false"
---

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QI-300-V-485: TRMS AC/DC Current Transformer, 300A, 0-10V and RS485 Modbus Output

The QI-300-V-485 is an AC and DC current transformer, galvanically isolated from the measurement circuit. The device is in function and appearance very similar to a standard active current transformer, but it is capable of measuring the continuous and TRMS alternating components.

The transformer features an RS485 Modbus serial output and a 0-10V analog output. Via the serial port, it is possible to freely configure the span and zero and assign the Modbus address.

## Technical Specifications

- POWER SUPPLY: 12…30Vdc, Protections for polarity inversion and overtemperature
- CURRENT DRAW: Maximum 20mA
- PROTECTION RATING: IP20
- ACCURACY CLASS: 0.5% F.S.
- RESOLUTION: 12 bit
- TEMPERATURE COEFFICIENT: < 200 ppm/°C
- RESPONSE SPEED: 1000 ms
- OPERATING TEMPERATURE: -15…+65°C
- MEASUREMENT TYPE: RMS (unipolar) or DC
- RANGES: 300 A AC/ DC, custom scales settable via RS485
- CREST FACTOR: 1.4
- BANDWIDTH: DC or 20…2000 Hz
- ISOLATION: 3 kV on bare cable
- OVERLOAD: 2kA impulsive, 300A continuous
- OUTPUT: 0…10V and RS485

 

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Source: https://shop.marcomweb.it/en/voltage-current-phase/qi-300-v-485-trms-acdc-current-transformer-300a-0-10v-and-rs485-modbus-output

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