Siemens 7KT1672 SENTRON PAC1100 Multi-function DIN Rail Energy Meter
The Siemens 7KT1672 SENTRON PAC1100 is a sophisticated multi-function DIN rail energy meter designed for precise power monitoring in industrial and commercial applications. It offers a robust solution for measuring active, reactive, and apparent energy, providing valuable data for energy management, cost allocation, and system optimization. With its compact DIN rail design and comprehensive measurement capabilities, the 7KT1672 SENTRON PAC1100 facilitates efficient integration into existing electrical panels and systems.
Product Specifications
| Parameter | Specification |
| :------------------------- | :----------------------------------------------- |
| Product Brand Name | SENTRON |
| Product Designation | Energy counter |
| Calibrated | Yes |
| Measured Value Detection | Active, Reactive, Apparent Energy |
| Signal Type | S0 pulse output |
| Design | Solid-state pulse output |
| Supply Voltage (L-L) | 323 V to 456 V |
| Supply Voltage (N-L) | 187 V to 264 V |
| Protection Class | IP40 (front), IP20 (rear) |
| Operating Frequency | 45 Hz to 65 Hz |
| Operational Current | 5 A |
| Suitability | Import/Export energy measurement |
| Display | Digital LCD, 10 characters |
| Modular Width Units | 4 |
| Fastening Method | DIN rail |
| Net Weight | 286 g |
| Operating Temperature | -25°C to +55°C |
| Measurement Procedure | TRMS for voltage measurement |
| Consumed Active Power | Typically 2.7 W (without expansion module) |
| Digital Output | 2 solid-state outputs |
| Digital Input | 1 input |
| Pulse Duration | 10 ms to 1000 ms |
| Measurable Line Frequency | 45 Hz to 66 Hz |
| Measurable Current (Rated) | 5 A |
| Product Function | Reactive power, frequency, voltage, current, active power measurement |
Core Features & Market Positioning
The Siemens 7KT1672 SENTRON PAC1100 distinguishes itself in the competitive energy monitoring market through its advanced measurement capabilities and user-centric design. It offers simultaneous measurement of active, reactive, and apparent energy, providing a holistic view of power consumption crucial for industrial energy management strategies. The device's direct connection capability for currents up to 5 A, with potential for higher currents via external transformers, positions it as a versatile solution for a wide range of plant sizes. Its robust construction and adherence to standards like IEC 62053-21 and IEC 62053-23 underscore its reliability and accuracy, key factors for industrial users concerned with precise billing and operational efficiency. Furthermore, its integration into the broader Siemens SENTRON portfolio, which includes power monitoring software like powermanager, enables seamless data analysis and system integration, appealing to businesses seeking comprehensive digitalization solutions.
Key Application Scenarios
The Siemens 7KT1672 SENTRON PAC1100 is ideally suited for a variety of demanding applications where accurate energy data is paramount. In industrial plants, it is deployed to monitor individual machine consumption, optimize production processes, and identify energy wastage. For commercial buildings, it facilitates sub-metering for tenant billing, load balancing, and overall energy efficiency initiatives. Its suitability for infrastructure projects includes applications in power distribution networks, where precise measurement of energy flow is essential for grid management and operational integrity. The meter's ability to measure import and export energy makes it valuable for facilities engaged in on-site power generation or renewable energy integration. The compact DIN rail form factor also makes it a practical choice for electrical panel builders and system integrators who require reliable, space-saving energy monitoring solutions.
Practical System Integration Guidance
Integrating the Siemens 7KT1672 SENTRON PAC1100 into an electrical system is facilitated by its standard DIN rail mounting, allowing for quick and secure installation within control cabinets and distribution boards. For wiring, the device accommodates three-wire or four-wire power supply networks and utilizes screw terminals for its connections. It is crucial to ensure that the supply voltage matches the specifications on the type plate before connecting the device. The S0 pulse output, a solid-state type, can be configured for a pulse duration between 10 ms and 1000 ms and supports import/export energy measurement. For systems requiring data logging and advanced analysis, the meter can be integrated with Siemens' powermanager software, which allows for parameterization, monitoring, and archiving of energy data. When integrating with other devices or networks, proper communication protocols and parameter settings, such as IP address configuration for Ethernet-based systems, must be observed. For Modbus RTU communication, a 120 Ω terminating resistor is recommended at the beginning and end of the bus cable.
Operation and Risk Mitigation
Operating the Siemens 7KT1672 SENTRON PAC1100 requires adherence to safety protocols to prevent personal injury and equipment damage. It is imperative that only qualified personnel undertake the installation, commissioning, and operation of this device, as per Siemens' safety guidelines. Before any work commences, the system and the device must be disconnected from the power supply. Protection against overcurrent is essential; the device must be protected with an IEC-approved fuse or miniature circuit breaker, as non-fused voltage measuring inputs can lead to damage. The operating temperature range is -25°C to +55°C, and ambient conditions must be complied with to ensure safe and reliable operation. To mitigate the risk of manipulation, it is recommended to activate the device's protective mechanisms, utilizing default passwords for user rights (1000) and extended rights (2000). The device is designed for AC current measurement only and is not suitable for DC current.
Scalability & Long-Term Value
The Siemens 7KT1672 SENTRON PAC1100 offers significant long-term value through its potential for integration into larger energy management systems and its compatibility with Siemens' expanding portfolio of digital solutions. While the 7KT1672 itself is a foundational energy meter, it serves as a critical data acquisition point within more comprehensive IIoT and Industry 4.0 initiatives. By capturing granular energy consumption data, it enables businesses to leverage advanced analytics for predictive maintenance, operational optimization, and smart grid integration. Its role as part of the SENTRON family ensures compatibility with Siemens' powermanager and powerconfig software tools, facilitating scalable deployment and unified system management. This interoperability allows for straightforward upgrades and expansions, ensuring that the investment in the 7KT1672 remains relevant as a company's energy monitoring needs evolve.
Frequently Asked Questions (FAQs)
Q1: What are the primary benefits of using the Siemens 7KT1672 SENTRON PAC1100?
The Siemens 7KT1672 SENTRON PAC1100 offers precise measurement of active, reactive, and apparent energy, crucial for detailed energy analysis. Its digital LCD display ensures clear readability of consumption data, aiding in cost allocation and identifying savings opportunities.
This multi-function meter facilitates easy integration into electrical panels due to its standard DIN rail mounting. Its compact design saves valuable space, making it suitable for various industrial and commercial installations.
The device supports import and export energy measurement, making it versatile for facilities with distributed generation or energy trading. This broad functionality enhances its value for comprehensive power monitoring.
Q2: Can the Siemens 7KT1672 SENTRON PAC1100 measure both import and export energy?
Yes, the Siemens 7KT1672 SENTRON PAC1100 is designed to measure both imported and exported energy. This capability is vital for applications involving renewable energy generation or energy storage systems.
It allows users to accurately track energy flow in both directions, providing a complete picture of the site's energy balance. This is essential for accurate billing and operational management in complex energy scenarios.
The dual-direction measurement ensures that the meter can effectively monitor energy consumed from the grid as well as energy fed back into it.
Q3: What are the voltage and current ratings for the Siemens 7KT1672 SENTRON PAC1100?
The Siemens 7KT1672 SENTRON PAC1100 operates with a supply voltage range between 187 V and 264 V (N-L) and 323 V to 456 V (L-L). This accommodates standard industrial and commercial power grids.
The rated operational current for the meter is 5 A. For applications requiring measurement of higher currents, external current transformers are necessary.
The meter is designed for AC current measurement and should not be used for DC current applications.
Q4: How is the Siemens 7KT1672 SENTRON PAC1100 installed and connected?
Installation is straightforward, utilizing a standard DIN rail mounting system for easy integration into electrical cabinets. This ensures a secure and space-efficient setup.
The device supports three-wire or four-wire power supply networks and features screw terminals for electrical connections. Proper wiring according to the manual is essential for safe operation.
Before connecting, always ensure the system and device are disconnected from the power supply and that the system voltage matches the meter's specifications.
Q5: What communication or output capabilities does the 7KT1672 SENTRON PAC1100 offer?
The Siemens 7KT1672 SENTRON PAC1100 is equipped with an S0 pulse output, which is a solid-state type. This output is configurable for various pulse durations, ideal for energy data logging.
It features two digital solid-state outputs and one digital input. These allow for basic signaling and integration into control systems.
While not featuring native Modbus or Ethernet communication, its S0 output can be integrated into systems that utilize these protocols via appropriate gateways or interfaces.
Q6: What is the operating temperature range for this energy meter?
The Siemens 7KT1672 SENTRON PAC1100 is designed to operate reliably within a temperature range of -25°C to +55°C. This broad range ensures functionality in diverse environmental conditions.
Adherence to these ambient conditions is critical for maintaining the meter's accuracy and longevity. Extreme temperatures outside this range can affect performance and potentially lead to damage.
Proper ventilation and environmental control in the installation location are recommended to ensure the device operates within its specified temperature limits.
Q7: Can this meter be used for sub-metering applications?
Yes, the 7KT1672 SENTRON PAC1100 is an excellent choice for sub-metering applications. Its ability to measure energy consumption accurately makes it ideal for monitoring individual loads or circuits.
In commercial buildings or multi-unit dwellings, it can be used to allocate energy costs to specific tenants or departments. This provides granular data for billing and efficiency analysis.
Its DIN rail mounting and compact size facilitate easy integration into distribution boards for localized energy tracking.
Q8: What is the accuracy class of the Siemens 7KT1672 SENTRON PAC1100?
The meter's accuracy is specified to be in accordance with IEC 62053-21 for active energy and IEC 62053-23 for reactive energy. These standards define the performance requirements for electricity metering devices.
While specific class numbers (e.g., Class 1 or Class 2) are not explicitly stated in all sources for the 7KT1672, adherence to these IEC standards ensures a high level of measurement precision required for billing and monitoring purposes.
Users should consult the detailed product documentation for precise accuracy class information relevant to their specific application requirements.
Q9: Does the Siemens 7KT1672 SENTRON PAC1100 support remote communication protocols like Modbus or Ethernet?
The Siemens 7KT1672 SENTRON PAC1100 primarily offers an S0 pulse output for basic data transmission. It does not natively support advanced communication protocols such as Modbus RTU or Ethernet TCP/IP.
To integrate its data into systems requiring these protocols, external gateways or converters are necessary. These devices can translate the S0 pulses into digital data formats compatible with Modbus or Ethernet networks.
For direct Modbus or Ethernet communication, Siemens offers other SENTRON PAC series meters (e.g., 7KT1665, 7KT1668) which feature these integrated communication options.
Q10: How can I ensure safe operation and prevent manipulation of the 7KT1672 SENTRON PAC1100?
Safe operation is ensured by having only qualified personnel install, commission, and operate the device, strictly following all safety instructions and warnings in the manual. Always disconnect power before working on the meter.
To prevent manipulation, activate the device's built-in protective mechanisms. Default passwords for user rights (1000) and extended rights (2000) are available, and using a physical seal on the cover can add an extra layer of security.
Regularly review and apply any firmware updates recommended by Siemens to maintain the highest level of security and operational integrity.
