Tuya 2CT

Compatibility

Compatible with EpiSensor Edge over Zigbee.

Pair it with the Zigbee radio on an EpiSensor Gateway. Edge reads it locally on the Gateway.

Edge reads 20 values from it, listed under Interface.

Connect it with

• 
  Gateway ZGW-20
  From €899 ex VAT Configure Gateway

Specifications

The 2CT is a single-phase energy meter with two 80 A current clamps. It measures the supply voltage and frequency once, and power, current, power factor and consumed energy separately on channel A and channel B. It also reports the total power of both channels.^2, 3

Power

Mains. Reports a single-phase mains supply as its power source when it joins. No supply voltage range is published for it.⁴

Channels

2 current channels (A and B), one voltage measurement³

Current clamps

80 A³

Update interval

3 to 60 s, 10 s default³

Calibration factors

0.5 to 1.5 in steps of 0.01, for voltage, frequency and each channel's current and power³

Energy totals

Consumed energy per channel, in steps of 0.01 kWh³

Power resolution

0.1 W³

Current resolution

0.001 A³

Voltage resolution

0.1 V³

Frequency resolution

0.01 Hz³

Zigbee role

Router, mains powered⁴

Data transport

Tuya datapoints on cluster 0xEF00¹

Zigbee identity

TS0601, _TZE204_dhotiauw³

Where it is used

• Trend monitoring of two single-phase circuits, such as a heat pump and its backup heater.

  Heat pump performance monitoring

• Consumption of two sub-circuits in each of many small sites, where a clip-on meter avoids rewiring.

  Multi-site energy monitoring

Interface

On the Zigbee network it joins as a router and extends the mesh for other devices.⁴

Readings and settings, with units and ranges where Tuya publishes them. R readable, R·W readable and writable.

Every reading and setting travels as a Tuya datapoint on the private cluster 0xEF00 on endpoint 1, not on the standard Zigbee metering clusters. Edge decodes them through the 2CT definition, which is why the manufacturer name has to match.^1, 4

Each calibration factor defaults to 1.0. Change one only after comparing that reading with a reference instrument, and record the value you set.³

The definition maps no exported energy total for either channel. Power factor is reported as a percentage.³

Setup

1. Open pairing in Edge

   Open pairing on the Gateway's Zigbee network in Edge, then put the meter into pairing mode as its instructions describe.

2. Check the identity

   Edge should report model TS0601 and manufacturer _TZE204_dhotiauw. Other two-clamp meters also report TS0601 but use different datapoints, so the manufacturer name decides which definition applies.³

3. Set the update interval

   The meter reports every 10 seconds by default. Set it anywhere from 3 to 60 seconds from Edge; a longer interval means less Zigbee traffic.³

4. Check and trim each channel

   Switch on a known load on each clamped circuit and compare voltage, current and power with a reference meter. If one reads consistently high or low, set its calibration factor from Edge, between 0.5 and 1.5.³