QT610 Multi functional Rail Energy Efficiency Terminal-Global supplier

13th Floor, Building I1, Zhongjian Optics Valley Star, No. 799 Gaoxin Avenue, Donghu High tech Zone, Wuhan City

QT610 Energy Efficiency Meter User Manual

I. Overview

The QT610 three-phase rail type intelligent energy efficiency collection terminal is a cost-effective power monitoring instrument developed by Wuhan Shuntong Intelligent Technology Co., Ltd. for energy management systems.

The QT610 terminal uses an industrial grade microprocessor as its core, with high processing speed and the ability to provide high-precision basic measurement data such as three-phase voltage, current, and power. It also has functions such as demand calculation, harmonic calculation, set value exceeding limit, data freezing, timed recording, residual current protection, and temperature protection. The QT610 terminal adopts an open CT or puncture CT, which supports power free installation and can greatly reduce construction costs and time in renovation projects; Supports three wireless communication methods to meet the communication requirements of different scenarios; Optional residual current and temperature measurement are available to ensure the safe use of electricity for the equipment. The QT610 terminal adopts a rail type installation, which can meet the installation requirements of low voltage cabinets and floor distribution boxes with strict space requirements, saving users a lot of investment and space.

The QT610 terminal has a wide range of applications and can be used in various smart building electricity fields, industrial electricity management systems, and energy efficiency management systems. Typical application scenarios include:

Intelligent building system;

Industrial demand side;

Electrical safety;

Energy consumption renovation of base stations;

Energy consumption management renovation of production line.

2、 Main performance indicators

2.1 Environmental conditions

Environmental temperature: -25 ℃ to+70 ℃;

Storage temperature: -40 ℃ to+85 ℃

Relative humidity: 5% to 95% (without condensation)

Atmospheric pressure: 70kPa~106kPa

Altitude: ＜ 3000m

2.2 Voltage Circuit

Rated voltage Un: 220VL-N/380VL-L

Measurement range: 90V~1.2Un

Starting voltage: 90VUA (regular power supply)/90VAAC (wide voltage power supply)

Frequency: 45Hz~65Hz

Power consumption:<10VA/phase and<2W/phase

2.3 Current Circuit

Rated current In: 40mA, 2.5mA

Measuring range:

Rated 40mA: 0.15% In~In;

Rated 2.5mA: 0.1% In~1.2In

Starting current:

Rated 40mA: 0.15% In;

Rated 2.5mA: 0.1% In

Power consumption:<0.25VA/phase

Open CT specifications:

额定40 mA：100A/40mA，200A/40mA，400A/40mA，800A/40mA；

Rated 2.5mA: 5A/2.5mA

2.4 Switching input (DI)

Optional 2 DI channels

Rated voltage: 24VDC, internal excitation

Event resolution: 1ms

2.5 Switching output (DO)

Optional 2-channel electromagnetic relay output

Connection capacity: 5A continuous, 250VAC/30VDC

Breaking capacity: L/R=40ms, 10000 times

220VDC，0.1A

110VDC，0.3A

48VDC，1A

Action time:<10ms

Return time:<10ms

2.6 Residual current input (In)

Optional 1-channel IR, supporting open or closed residual current transformers

Measurement range: 20mA~2000mA

Measurement accuracy: ± 1% (full range); ± 2% (small current)

2.7 Temperature Input (TC)

Optional 4-channel TC, supporting PT100

Measurement range: -40 ℃~200 ℃

Measurement accuracy: ± 1 ℃

2.8 Overload Capacity

Voltage circuit: 1.2 times rated voltage, continuous operation; 1.9 times the rated input voltage, no damage after 4 hours

Current circuit: 1.2 times rated current, continuous operation; 20 times the rated current, allowing for 0.5 seconds

2.9 Electric energy pulse

Pulse constant: 10/100/1000/3200 imp/kWh

Pulse width: 80ms ± 20ms

2.10 Communication Interface

a）RS-485

Interface type: RS-485

Working mode: Half duplex

通信速率：1200、2400、4800、9600

Communication protocol: MODBUSRTU

b) Bluetooth communication (optional)

Serial port parameter: 1152008N1

Equipment Name: ZYBLE+Serial Number

Broadcast interval: 100ms

Transmission power: 0dBm

c) GPRS communication (optional)

Frequency band selection: Dual band 850/900 and 1800/1900MHz

Maximum number of channels: 1.

Communication protocol: MODBUSRTU

d) LoRa communication (optional)

Operating frequency range: 470MHz~510MHz

Available frequency bands: 16

通信速率： 1200bit/s

Communication protocol: MODBUSRTU

2.11 Tightening torque of terminal screws

Tightening torque of terminal screw: 0.5N · m

2.12 Protection level of shell

Protection level: IP51

2.13 Pollution level

Pollution level: Level 2

2.14 Accuracy

2.15 Insulation performance

2.16 Mechanical Properties

2.17 Electromagnetic compatibility

3、 Main functions

3.1 Input and Output

Three phase voltage input (Va, Vb, Vc, Vn);

Three phase current input (Ia, Ib, Ic);

Two switch inputs (DI1~DI2);

One relay output (DO1);

Two contact pulse outputs (P+, Q+, COM);

One residual current input (In);

Four temperature inputs (TC1~TC4).

3.2 Basic Measurement

Three phase phase voltage and average value, three-phase line voltage and average value, three-phase current and average value, three-phase active power and total value, three-phase reactive power and total value, three-phase apparent power and total value, three-phase power factor and total value, frequency, calculated neutral line current.

3.3 Electricity metering

The following electrical energy data for three-phase and single-phase:

Positive active energy, reverse active energy, total active energy, and net active energy;

Positive reactive energy, reverse reactive energy, total reactive energy, and net reactive energy;

Four quadrant reactive power;

Regarded as electrical energy;

Provide monthly electricity values for the past 12 months for the three-phase electricity mentioned above.

3.4 Power Quality

Fundamental data: power factor and total value, active power and total value, three-phase voltage/current angle;

Harmonic data:

Total harmonic active power;

Odd, even, and total harmonic distortion rates of three-phase voltage/current;

Three phase voltage/current subharmonic distortion rate (2-31st order);

Three phase current odd, even, and total TDD;

Voltage/current imbalance.

3.5 Demand Function

Real time demand of three-phase current/total active power/total reactive power/total apparent power;

The maximum monthly demand and time scale of three-phase current/total active power/total reactive power/total apparent power;

The maximum demand and time scale of three-phase current/total active power/total reactive power/total apparent power in the previous month;

3.6 Event Recording

100 event records with a resolution of 1ms; including DI displacement, DO action, residual current alarm, temperature alarm, over limit, self check, clearing events, etc.

3.7 Fixed value exceeding the limit

Up to 10 sets of fixed values can be set to exceed the limit, monitoring variables such as voltage, current, neutral line current, frequency, active power, reactive power, apparent power, power factor, real-time demand, predicted demand, odd/even/total harmonic distortion rate, imbalance, reverse phase sequence, residual current, temperature, etc., which can generate SOE and trigger relay action.

3.8 Data Freeze

Freeze 60 times a day; Freeze 36 times a month.

Freeze the electrical energy and demand data of the device, and record the freezing data and time.

3.9 Timed recording

5 sets of scheduled records, each set can record 16 variables, with a maximum of 10000 records per set;

The timing interval can be selected from 60s to 40 days (standard);

The available recording variables include: all real-time measurement data, three-phase total energy data, DI count, total harmonic content, total odd harmonic content, total even harmonic content, 2-31st voltage/current sub harmonic content, imbalance, demand data, temperature, etc.

3.10 Wiring Diagnosis

Voltage/current phase loss diagnosis, voltage/current phase sequence diagnosis, three-phase and total active power direction diagnosis

Frequency over limit monitoring, CT polarity monitoring.

3.11 Communication Method

1 RS-485 port, Bluetooth communication (optional), GPRS communication (optional), LoRa communication (optional);

Communication protocol: MODBUS-RTU;

RS485最高通信速率9600 bps。

4、 Terminal operation instructions

4.1 Terminal panel schematic diagram:

4.2 Status indication description

By checking the status indicator lights, one can know the various operating states of the terminal currently.

4.3 Button Description

1) There are three buttons on the terminal panel, each with several functions.

Select an item from the main menu or scroll down from a submenu;

Return to the higher-level menu;

Enter the sub menu with the confirm button or modify the content with the confirm button;

2) The password for setting terminal parameters consists of three confirmation keys pressed in a certain order;

3) In the parameter settings menu:

Implement the addition and subtraction of parameter values;

4.4 Display Instructions

The device is equipped with a LCD display selection, which can view real-time data or query parameters through the LCD. The default interface displays electrical energy. The specific display content is shown in the table below:

4.5 Debugging Instructions

All parameters of the device are tuned through the upper computer. Connect the upper computer or Bluetooth, default communication parameters are baud rate 9600bit/s, verification method 8E1, and communication ID is the last two digits of the serial number. The QT610 terminal supports upper computer debugging and Bluetooth debugging.

4.5.1 Bluetooth Debugging

Bluetooth debugging can read parameters such as voltage, current, power, and energy of the device, as well as read and set communication parameters.

4.5.2 Upper computer debugging

The supporting upper computer software QTouch for QT610 can read all data of the device and set all parameters. Set the communication parameters according to QT610 in Meterconfig, and then connect. If you are unable to connect or do not know the communication parameters of QT610, you can connect it to the RS485 port of QT610 and set the Commix software to 9600 baud rate and 8E1. The default communication ID of the terminal is 100, which can be changed through the Modbus protocol.

The CT transformation ratio of the device needs to be set through the upper computer.

When selecting CT models of 100A/40mA, 200A/40mA, 400A/40mA, and 800A/40mA, it is necessary to set the external CT type according to the actual CT specifications. If using a CT model of 100A/40mA, the external CT type should be set to 100A.

When selecting CT with 5A/2.5mA, it is necessary to set the CT transformation ratio. The transformation ratio should be set according to the actual primary CT. For example, if the primary CT is 150A, the CT transformation ratio should be set to 150/5.

5、 Common faults and troubleshooting

If any abnormal operation is found in the terminal, please refer to Table 2 to preliminarily determine the cause of the malfunction. For faults that cannot be eliminated, please contact our company, and we will promptly dispatch engineering maintenance personnel to help clear the obstacles.

Table 5 Common faults and troubleshooting methods

6、 Installation instructions

6.1 Whole machine composition

6.1.1 Host

6.1.2 Accessories

6.2 Installation diagram

6.2.1 Host Installation Diagram

environment

The device should be installed in a dry, clean, and away from heat sources and strong electromagnetic fields.

Installation location

Usually installed in switchgear, it can protect the device from oil, dirt, dust, corrosive gases, or other harmful substances. During installation, attention should be paid to easy maintenance, with sufficient space to place relevant wires, terminal blocks, short circuit boards, and other necessary equipment.

Host installation method

Adopting 35mm standard rail installation.

6.2.2 Installation diagram of open CT

6.2.3 Piercing Port CT Installation Diagram

6.3 Wiring schematic diagram

The following text explains typical wiring diagrams for various situations, with current transformers abbreviated as CT.

The QT610 device only supports 220/380V star and angle connections.

6.4 Terminal Wiring

6.4.1 Working power supply

Voltage is directly supplied without the need for an auxiliary power source.

6.4.2 Voltage and current input wiring

Refer to Figures 6-8 to 6-10 for details.

(1) The three-phase voltage input (Va, Vb, Vc, Vn) of this device can be directly connected to a 220/380VAC star system. If the voltage of the monitored system is higher than 220/380V, a voltage transformer (hereinafter referred to as PT) is required to proportionally reduce the voltage to the input range allowed by the device.

In order to use the QT610 device correctly, the selection of PT is important (if PT is required). Please select the parameters of PT according to the following requirements:

The rated value of the PT primary side in the star system should be equal to the rated value of the system phase voltage, or slightly higher than the rated value of the phase voltage.

The rated load capacity of PT must be greater than the sum of the loads of this device and other connected equipment connected to PT.

The accuracy of PT directly affects the overall measurement accuracy of this device. It is recommended that users choose PT with an accuracy higher than 0.5 level.

(2) Three phase current input (Ia, Ib, Ic)

The current input of this device adopts a dedicated interface, and a dedicated current transformer is required to measure the current of each phase. The transformation ratio parameters of three-phase CT are uniformly set, so the transformation ratio of three-phase CT must be the same.

The dedicated current transformer for this device is a 5A/100A/200A/400A/800A independent opening and closing CT. After opening the CT, it is clamped onto the tested cable, and the current flow direction is indicated by the arrow on the CT casing. After fastening the CT, it is fixed with nylon zip ties to prevent sliding. The CT comes with a 2-meter wire length, which can be used conveniently and quickly by inserting the CT terminal into the current terminal slot of the device.

Open CT structure and dimensions

（1）QTCT-XXA-XXmA， Cable tie fixation

（2）QTCT-XXA-XXmA， Cable tie fixation

（3）QTCT-XXA-XXmA， Cable tie fixation

（4）QTCT-XXA-XXmA， Cable tie fixation

（5）QTCT-XXA-XXmA， Cable tie fixation

Puncture CT structure and size

（1）QTCT-XXA-XXmA， Cable tie fixation

（2）QTCT-XXA-XXmA， Cable tie fixation

6.4.3 Communication Wiring

(1) RS-485 communication port, terminals marked as A and B.

The RS-485 communication method allows up to 32 instruments to be connected on one bus, which is connected to the upper computer through an RS-232/RS-485 converter. Communication cables can use ordinary shielded twisted pair cables, with a total length not exceeding 1200 meters. The positive and negative polarities of the RS-485 ports of each device must be connected correctly, and one end of the cable shielding layer must be grounded. If the shielded twisted pair cable is long, it is recommended to connect a resistor of about 120 Ω at its end to improve the reliability of communication. The communication wiring is as follows:

(2) Bluetooth communication, with the antenna located inside the device.

(3) GPRS communication, the upper right part of the device is the GPRS communication module, which uses a plug-in and pop-up installation method to replace the SIM card.

(4) LoRa communication, the antenna is located in the upper left part of the device. If the device is installed inside a metal cabinet, the antenna needs to be extended out of the cabinet to ensure communication quality.

6.4.4 DI Wiring

The device is equipped with two switch inputs, with terminals labeled DI1, DI2, and DIC, for detecting the status of external contacts. There is a 24V DC self-excited power supply inside the device for passive contact monitoring. The corresponding status of DI will be displayed on the panel.

6.4.5 DO wiring

The device can be equipped with one electromagnetic relay, with terminal blocks marked as K and K, which can directly cut off loads of 250VAC/5A or 30VDC/5A. When the load current is high, it is recommended to add an intermediate relay.

6.4.6 Contact Pulse Wiring

The device can be optionally equipped with 2 contact pulse outputs, with terminal blocks marked as P+, Q+, COM, which can output forward active pulses and reverse active energy pulses. The pulse constant can be set to 1000/3200 imp/kWh.

6.4.7 Residual current wiring

The two wires of the residual current transformer have terminal blocks marked as In.

When connecting a residual current transformer with electricity, an alarm or fault signal may be generated, which is not a device fault and is caused by live wiring operation. Therefore, it is advisable to avoid live wiring operation of the device as much as possible.

The device can achieve residual current alarm function by setting over limit parameters. It can be adjusted through the upper computer.

When installing wiring, all three phases and four wires should be passed through the residual current transformer at the same time. After passing through, the neutral wire should not be grounded repeatedly. The typical wiring diagram is shown in the following figure:

6.4.8 Temperature wiring

The two wires of the temperature probe are respectively connected to the two terminals of the temperature circuit of the device. Taking the first circuit as an example, it is the "Temperature Measurement One" and "Temperature Measurement One" terminals.

When the temperature detection head is connected with electricity, an alarm signal will be generated. It is not a device fault, but is caused by live wiring operation. The alarm signal can be manually reset. Try to avoid operating the device with live wiring as much as possible.

The device can achieve temperature alarm function by setting out of limit parameters. It can be adjusted through the upper computer.

The installation steps for temperature probes are as follows:

⑴ Wrap the coil 3 times at a distance of 50mm from the top of the temperature sensor, with a diameter of 20 to 30mm per turn. Then use zip tie 1 to tighten the coil at this point, as shown in the following figure:

⑵ Use another cable tie 2 to tie the coil winding onto the measured cable, as shown in the following figure:

⑶ Use another cable tie 2 to tie the winding of the coil onto the cable of the measured line, as shown in the following figure:

After all steps are completed, as shown in the following figure:

7、 Other precautions

1. The equipment should be stored in its original packaging, with an ambient temperature of -25 ℃ to 55 ℃, a relative humidity of 5% to 95%, and no corrosive gases.

If the equipment malfunctions, users should contact the local power supply department and are not allowed to open and repair it without authorization.

3. Technical support:

Address: Building 13, Zhongjian Science and Technology Industrial Park, No. 799 Gaoxin Avenue, Hongshan District, Wuhan City

Phone: Fax: