General Description

The product 3 phase LCD intelligent multi-tariff meter is adopted industrial-grade microprocessor as the core, adopted modern digital signal processing technology, integrated functions of electricity quantity telesignalling, telemetry, remote control and transmitter, etc into one. It is designed directly against primary return circuit, can accomplish monitoring function of primary return circuit. It is widely used in industry, commerce, civilian power system and substations.

Reference Picture

Mounting Dimensions & Wiring Diagram

Technical parameters

1. Environment

a) Running Temperature: -25℃~ +70℃

b) Atmospheric Pressure: 70kPa~106kPa

c) Relative Humidity: 5% ~ 95% (No condensation)

2. Rated Parameter

a) Working Power supply

• DC: Rated 220V, Voltage permissible variation: -20% ~ +20%

• AC: Rated 220V, Voltage permissible variation : -20% ~ +20%

b) AC Input

· Phase voltage: Rated 57.7V, 220V or 400V

· Phase current: Rated 5A or 1A

c)AO: Analog Output(AO)

· Rated 20mA, output range 4-24mA (1.2 times overload)

· Load capacity 500Ω

d) DI

· 24V DC excitation & self-excitation

· Front debounce time: 20ms

e) Relay Output

·Electromagnetic relay

· Contactor capacity: 5A, AC250V

f)  Power Dissipation

• AC current circuit: Less than 0.2A / phase (when rated at 5A)

                  Less than 0.04A / phase (when rated at 1A)

· AC voltage circuit: less than 0.5VA / phase (when rated)

· Device Power circuit: less than 3W

g)  Overload Capability

•  AC current circuit: 1.2 times the rated current, continuous operation

                            20 times the rated current, allow 1s

· AC voltage circuit: 1.2 times the rated voltage, continuous duty

                            20 times the rated voltage, allow 10s

h) Communication Interface

· Interface Type: RS-485, 2-wire type

· Operation Mode: Half-duplex mode

·Communication speed: 1200, 2400, 4800, 9600

Communication protocol: MODBUS

3. Measurement Accuracy Indicators

a) Phase voltage accuracy measuring range: 5V ~ 1.2 times rated voltage input

b) Current accuracy measurement range: Rated 5A: 5mA ~ 6A                         

                                              Rated 1A: 1mA ~ 1.2A

c) Accuracy Index

4.Accuracy Index

Function Intrudcution

1.Basic  Measurement

2. Follow describes Representation method of positive and negative symbol for power. The symbol of power factor is same as the symbol of active power. 

3.Electricity Quality

4. Recorded Wave

There are 128 points per cycle waveform, it can capture and display waveform of 1.5 cycle waveform of three-phase voltage and current in real-time.

5. Voltage Trend Graph

Record 3 phase voltage effective value trends graph in 2 hours, once a minute, total 120 points.

6. Electric Energy

The basic Electric Energy parameters include: active energy (kWh), reactive power (kvarh), reading resolution is 0.01. The maxi is 999,999,999. When it exceed this value, it will rolling-over and accumulate again.

7. Energy Management

Record the total energy consumption, unit area energy consumption and carbon emissions in the latest 3days.

Record the total energy consumption, unit area of energy consumption and carbon emissions in the latest 3months.

8. DI

4 channels digital input is adopted 5000Vac RMS photoelectric coupler buffering, and used internal 24V DC driving. Every channel would check the status of outer passive contact point.

9. DO

4 channels relay output, machinery contact point, contact point capacity is 250Vac, 5A.

10. Setting value limit-exceed 

11. Sequence of Events(SOE)

12. AO output function

The device provides selectable analog output function, which may be set to current output with 4~20mA and it is proportional to a certain measuring electricity.

  Zhuzhou Sanda Electron Manufacturing Co.,Ltd is a modernized high-tech enterprise engages in the research, produce and supplier of intelligent instruments for electric power grid and switch cabinet.

   We design,produce and sell:
1. Multi-function electric meter, multi-function network meter, multi-function harmonic meter, digital ammeter, digital voltmeter.
2.Switchgear intelligent operating devices, switch state indicator.
3.Over voltage protective device.
4.Temperature and humidity controller, dry-type transformer temperature and humidity controller.

   Widely use in electricity facilities worldwide:
• Oil & chemical, mechanical
• Construction and are applicable for terminal body.
• High voltage switch cabinet, substation.
• Low voltage box
• Low-voltage AC power distributing cabinet
• Low voltage cabinet.

 Cooperate with Sanda, enjoy safe electricity.

Factory direct supply, all goods can be customized.

OEM/ODM is available.

Application Fields.

  Application Fields

Intelligent Digital frequency meter is widely used in chemical industry, cement industry, metallurgy industry, construction industry, and power industry. Up to now, we have bid for many engineering projects. Certified quality guards safe usage.

Sales Network

• Production line

We have an advanced complete production line which ensured large quantity production.

•  Lead time

Once order confirmed, goods would be packed and delivered directly from our ware house.

•   Warranty

All goods have 1 year warranty, and goods repair expenses are totally free.

•   Online services

Please feel free to contact us. Our sales team will provide you with 24 hours better pre-sale and after-sale service.

•   Effective management

Production processes are followed JIT management. We have standard management combined with high-tech procedures to ensure an effective production.

•   Competitive price

All goods are supplied directly from factory. We can quote our clients with competitive price.

•   OEM/ODM

With 15 years experiences in this field, we can provide customers with professional suggestion to boost sustainable development.