PQMII-T20-C Three phase Power Quality Monitor

Description

PQMII-T20-C is a three-phase power quality monitoring instrument designed to seamlessly integrate with industrial control systems, programmable logic controllers (PLCs), and data acquisition and monitoring control system (SCADA) platforms. Its main function is to continuously measure and analyze over 100 electrical parameters, including three-phase voltage, current, frequency, total harmonic distortion (THD), and power factor. This module is equipped with advanced signal processing capabilities, which collect raw data through current transformers (CT) and voltage transformers (VT), and then process it into actionable insights through its intuitive interface or industrial protocols such as Modbus TCP or Profibus.

PQMII-T20-C

As a first-line diagnostic tool, this monitor is usually installed at the point of common coupling (PCC) or critical subsystem. It supports real-time alarm triggering for out of range parameters (such as voltage exceeding ± 10% tolerance) and sends instant alerts through email, SMS, or SCADA notifications.PQMII-T20-C can also store historical trend data for up to [X] days, facilitating root cause analysis of recurring issues. Although it does not directly control the equipment, its predictive analysis function allows the team to prioritize maintenance work, such as replacing the capacitor bank before it ages and causes a power outage.

PQMII-T20-C

Technical specifications:
Model  PQMII-T20-C
Brand GE
Type Three phase power quality monitoring instrument
Input voltage 85-690 VAC (universal three-phase)
Operating temperature range -40 ° C to+85 ° C (industrial grade durability)
Installation method: DIN rail or panel installation (IP65 protection level enclosure, suitable for harsh environments)
Interface/Bus Ethernet (Modbus TCP), RS-485 (Modbus RTU), Profibus DP, CANopen
Compliance with IEC 61000-4-3, IEEE 519, CE, UL, CSA
Supported protocols Modbus, Profibus, DNP3, IEC 61850

Contact Us
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PQMII-T20-C

Main features and advantages:
Choosing  PQMII-T20-C means investing in a solution aimed at improving operational resilience and cost-effectiveness. Its high-precision measurement (voltage/current accuracy ± 0.2%) ensures accurate energy auditing and helps identify wasteful behaviors such as overload or reactive power loss. For example, a food processing plant using this monitor may find that its refrigeration system has load imbalance issues, and rebalancing the load can reduce energy costs by 12%.

The real-time alarm system of this module can reduce unplanned downtime by up to 50% by alerting the team to issues such as harmonic levels exceeding IEEE 519 limits or sudden frequency deviations. This proactive approach, combined with trend analysis, enables predictive maintenance, such as scheduling transformer repairs during planned downtime rather than repairing after a fault occurs. In addition, its plug and play integration with existing SCADA systems can shorten deployment time by 30%, while its robust structure (IP65 protection level) ensures reliability in dusty, humid, or high vibration environments.

PQMII-T20-C

Application areas:
PQMII-T20-Cperforms well in industries where power quality directly affects productivity and compliance:
Manufacturing and automotive industries: deployed in factory workshops to monitor the power supply lines of CNC machine tools, robotic arms, and conveyor systems, ensuring stable operation and preventing defects caused by voltage fluctuations. In automobile factories, it may detect harmonic distortion generated by welding equipment, prompting the installation of filters to protect sensitive control systems.
Energy and Renewable Energy: Used for solar power plants, wind turbines, and microgrids, analyzing the quality of grid interconnection to ensure compliance with the IEEE 1547 Distributed Energy Resources (DER) standard. It can also optimize power factor correction in hybrid systems and increase energy production.
Medical and Pharmaceutical: Integrated into critical power systems in hospitals and cleanrooms, used to monitor uninterruptible power supply (UPS) outputs and emergency generators to prevent MRI equipment data loss or abnormal storage facility temperatures. It complies with the IEC 61000-4-3 standard, ensuring minimal electromagnetic interference (EMI) to medical equipment.

PQMII-T20-C

Related products:
PQMII-T40-C: Equipped with 16 inputs, suitable for large industrial complexes.
PQMII-T20-CH: Enhanced Harmonic Analysis Variant (up to 100 orders), suitable for semiconductor manufacturing plants.
PQMII-T10-C: Suitable for small and medium-sized enterprises (SMEs) or retail environments.
PQMII-T20-CR: Redundant power version, equipped with dual inputs, suitable for data centers and telecommunications hubs.
PQMII-T20-CE: Explosion proof variant, suitable for hazardous areas such as refineries.
PQMII-T20-CW: Wireless enabled model, suitable for remote sites, transmitting data via LTE or Wi Fi.

PQMII-T20-C

Installation and maintenance:
Before installation, please verify the compatibility of CT/VT with the input range of the monitor (e.g. 1A or 5A CT) and ensure proper grounding to reduce electromagnetic interference. Configure alarm thresholds according to industry standards (e.g. THD<5% for commercial buildings) and establish data recording intervals (e.g. 1-minute snapshot for load analysis). For multi monitor networks, please use VLAN to isolate power quality data from other traffic to ensure low latency alarms.

Routine maintenance includes quarterly checks for CT connections for oxidation or loose terminals, as well as annual firmware updates to access new features such as advanced harmonic trend analysis. Use the built-in event log of the monitor to view interference records (such as voltage surges during the start-up of large motors) and optimize control strategies, such as implementing soft starters. In corrosive environments, please check the enclosure seals annually to maintain the integrity of the IP65 protection level.

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