DTM740 power parameter measuring instrument is a power parameter measuring instrument designed for the power monitoring needs of power systems, industrial and mining enterprises, public facilities, and smart buildings. It can measure all common power parameters, such as single-phase current, voltage, active and reactive power, and electricity. Since this power meter also has a complete communication network function, we call it a power parameter measuring instrument. It is very suitable for real-time power monitoring system. DTM740 has a very high cost performance, can directly replace conventional power transmitters and measuring instruments. As an advanced intelligent and digital front-end acquisition component, this series of power parameter measuring instruments have been widely used in various control systems, SCADA systems and energy management systems.
■ Signal can be connected directly from current and voltage transformers
■ Can be set arbitrarilyCT ratio
■ The meter display can be scrolled and oriented display
■ Different communication addresses can be set for multiple instruments
■ Communication accessIn SCADA, PLC and other systems
■ Highlight digital tube display, high visibility
■ Convenient installation, simple wiring, small
■ Compatible with most of the industryPLC connected（Modicon, GE, Simens…）
■ Can communicate with various software in the industry（Intouch, Fix, Citec,组态王等）,
■ International standardModBUS-RTU协议
■ Low cost and high performance;
■ Small volumeeasy installation and simple wiring;
■ Stable performance and high data accuracy;
■ Professional independent design, complete functions;
■ Composition of industrial components, first-class quality;
■ Classic structure design, strong scalability;
■ Complete series and multiple models available.
Parameter | Index |
Accuracy class | |
Voltage and current | 0.2 level |
Electricity and power | 0.5 level |
Applicable system | |
Low pressure system | 400Vthe following(Three-phase Y-shaped and three-phase △-shaped) |
High pressure system | 400V以上(Three-phase Y-shaped and three-phase △-shaped) |
| Display Data | |
Current | Rated current input 1A or 5A, continuous 1.2 times, instant current 10 times/1 second |
Voltage | Rated voltage input 100V or 220V, continuous 1.2 times, voltage 2 times/1 second |
Extensions | |
Switch(Default wet contact) | Wet contact: AC220V ± 25% or DC 220V ± 25% Dry contact: common output 12V |
Relay output | AC 220V/5A, DC 30V/5A |
Analog output | Load resistance is 50~250 ohm |
Pulse output | The pulse constant is 500~10000, the default is active pulse, the pulse constant is 2000 |
Note: Relay, analog quantity, pulse function can only choose one of three | |
Power supply | |
Wide pressure type | AC85V ～ 265V;DC80V ～ 300V |
Power consumption | Less than2W |
Insulation Parameters | |
Dielectric strength | 2KV(Test voltage is AC effective value)） |
Insulation resistance | ≥ 50MΩ |
Working conditions | |
Ambient temperature | -20℃～+70℃ |
Storage temperature | -30℃～+80℃ |
Relative humidity | Relative humidity:5％～95%,No condensation |
size | |
Disk opening size | 67×67mm |
Instrument panel size | 73×73mm |
Shape and installation size
■ Signal can be connected directly from current and voltage transformers
■ Can be set arbitrarilyCT ratio
■ The meter display can be scrolled and oriented display
■ Different communication addresses can be set for multiple instruments
■ Communication accessIn SCADA, PLC and other systems
■ Highlight digital tube display, high visibility
■ Convenient installation, simple wiring, small
■ Compatible with most of the industryPLC connected（Modicon, GE, Simens…）
■ Can communicate with various software in the industry（Intouch, Fix, Citec,组态王等）,
■ International standardModBUS-RTU协议
■ Low cost and high performance;
■ Small volumeeasy installation and simple wiring;
■ Stable performance and high data accuracy;
■ Professional independent design, complete functions;
■ Composition of industrial components, first-class quality;
■ Classic structure design, strong scalability;
■ Complete series and multiple models available.
Parameter | Index |
Accuracy class | |
Voltage and current | 0.2 level |
Electricity and power | 0.5 level |
Applicable system | |
Low pressure system | 400Vthe following(Three-phase Y-shaped and three-phase △-shaped) |
High pressure system | 400V以上(Three-phase Y-shaped and three-phase △-shaped) |
| Display Data | |
Current | Rated current input 1A or 5A, continuous 1.2 times, instant current 10 times/1 second |
Voltage | Rated voltage input 100V or 220V, continuous 1.2 times, voltage 2 times/1 second |
Extensions | |
Switch(Default wet contact) | Wet contact: AC220V ± 25% or DC 220V ± 25% Dry contact: common output 12V |
Relay output | AC 220V/5A, DC 30V/5A |
Analog output | Load resistance is 50~250 ohm |
Pulse output | The pulse constant is 500~10000, the default is active pulse, the pulse constant is 2000 |
Note: Relay, analog quantity, pulse function can only choose one of three | |
Power supply | |
Wide pressure type | AC85V ～ 265V;DC80V ～ 300V |
Power consumption | Less than2W |
Insulation Parameters | |
Dielectric strength | 2KV(Test voltage is AC effective value)） |
Insulation resistance | ≥ 50MΩ |
Working conditions | |
Ambient temperature | -20℃～+70℃ |
Storage temperature | -30℃～+80℃ |
Relative humidity | Relative humidity:5％～95%,No condensation |
size | |
Disk opening size | 67×67mm |
Instrument panel size | 73×73mm |
Shape and installation size
