GE PQM-C - Detailed Description

Functional Features

• Rich Measurement Parameters: Capable of measuring various electrical parameters, including three-phase voltage, current, active power (kW), reactive power (kvar), apparent power (kVA), power factor (per phase and total), and frequency. The voltage measurement range is 70-265V AC (50/60Hz), the current range is 0-50A RMS, and the power factor range is from 0.000 leading to 1.000 lagging. It can also analyze harmonics up to the 63rd order, provide data such as total harmonic distortion (THD) and individual harmonic components, and has waveform capture and transient analysis functions to capture and analyze transient events such as voltage spikes and sags.
• Flexible Control Functions: Equipped with 4 programmable output relays and 4 programmable switch inputs. The relays can 实现 overcurrent/undercurrent, overvoltage/undervoltage alarms, unbalance alarms, demand-based load shedding/reset, and capacitor control for power factor correction. The switch inputs can be used to monitor status information such as circuit breaker position and energy exchange.
• Powerful Communication Capabilities: Supports multiple communication protocols such as RS-232, RS-485, and Modbus. Through these interfaces, it can connect to upper computer systems or other intelligent devices to achieve data sharing and remote monitoring.
• Data Recording and Display: Features a 3.5-inch color touchscreen display for local display of all monitored variables. It has a data recording function that can store historical data for up to 1 year, facilitating users to view historical data and analyze the changing trends of power quality.

Technical Parameters

• Current Input: Uses true RMS conversion with 64 sampling points per cycle. Current transformer inputs are 1A and 5A on the secondary side, with a load of 0.2VA. It can withstand 20 times the current transformer rated current for 1 second and 100 times the current transformer rated current for 0.2 seconds. The measurement range is 1%-150% of the current transformer primary side, with a frequency up to 32 and an accuracy of ±0.2% of full scale.
• Voltage Input: Also uses true RMS conversion with 64 sampling points per cycle. The voltage transformer primary/secondary side can be directly connected or 120-72000:69-240, with a load of 2.2MΩ. The input range is 20-600V AC, with automatic range switching for full scale of 150/600V AC, a frequency up to 32, and an accuracy of ±0.2% of full scale.

Application Scenarios

• Industrial Facilities: Used to monitor power quality and identify issues that may affect the performance of sensitive electronic equipment, motors, and drives.
• Commercial Buildings: Helps ensure reliable power supply for critical equipment such as servers, data centers, and HVAC systems.
• Utilities: Power companies use it to monitor the quality of electricity delivered to customers and identify potential problems in the distribution network.
• Renewable Energy Installations: Can be used to monitor the power quality of renewable energy sources such as solar and wind farms, ensuring grid stability and compliance with grid connection standards.

Other Features

• Wide Power Supply Range: Can operate on 90-300V DC and 70-265V AC power supplies, adapting to various power systems.
• Durable: Sturdy structure that can withstand harsh industrial environments such as vibration, dust, and extreme temperatures.
• Easy to Install: Designed for panel mounting, facilitating integration into control cabinets and distribution panels. It uses screw terminal connections to ensure secure and fast wiring.