Description
Powerside Power Quality Relay
PQ1 Power Quality Relay / Sensor
The Powerside PQ1 is a compact power quality relay designed for simple and fast detection of voltage disturbances on AC mains. It provides AC-in, relay-contact-out integration, allowing PLCs, SCADA systems, machine controllers and alarm systems to know when a sag, dip, swell, interruption or impulse has occurred.
PQ1 is suitable when the requirement is not a full power quality analyser, but a practical relay-based event detector that can be embedded into machines, semiconductor tools, medical equipment, elevators, HVAC controls, data centres, telecom systems and industrial control panels.
Event Detection
Sags, dips, swells, interruptions and impulses
Fast Impulses
Detects impulses down to 500 nanoseconds
Outputs
3 normally-closed dry relay contacts
Setup
No software or computer required
Overview
PQ1 is built for quick integration into equipment and control systems. It monitors the AC mains and operates relay outputs when a qualifying power quality event is detected. The relay contacts can be wired into PLC digital inputs, error logs, alarms, interlocks or machine control systems.
It comes with preset international power quality response curves, allowing the user to select a suitable threshold standard without building a custom monitoring algorithm. This makes the PQ1 useful for equipment builders, semiconductor plants, automation systems and facilities that need immediate event notification.
Positioning: Compact relay-based power quality event detector for equipment protection, machine troubleshooting and fast alarm integration.
Key Features
AC In, Relay Out
Simple installation: connect the AC mains input and wire the relay contacts into the control or alarm system.
Power Quality Event Detection
Detects major sag, minor sag, swell, impulse and interruption events on the monitored AC supply.
500ns Impulse Detection
Captures fast high-frequency impulse events down to 500 nanoseconds.
Preset Thresholds
Includes preset industry curves such as SEMI F47, ITIC, CBEMA, IEC, EN50160 and MIL-STD thresholds.
No Software Required
Designed for direct field use with dial / threshold selection and front-panel event indication.
DIN Rail or Panel Mount
Compact design for machine panels, control cabinets, semiconductor tools and industrial equipment.
What PQ1 Detects
| Power Quality Event |
Description |
Typical Impact |
| Voltage Sag / Dip |
Short-duration voltage reduction below selected threshold. |
PLC reset, VFD trip, control power interruption, machine stoppage. |
| Major Sag |
Deeper voltage reduction that is more likely to affect sensitive equipment. |
Tool trip, process interruption, failed production batch, nuisance service call. |
| Voltage Swell |
Short-duration voltage rise above selected threshold. |
Power supply stress, equipment alarm, control component disturbance. |
| Interruption |
Loss or near-loss of voltage supply for a qualifying duration. |
Equipment shutdown, controller reboot, system fault logging. |
| Impulse |
Fast high-frequency transient event, detected down to 500ns. |
Electronics disturbance, unexplained equipment fault or communication issue. |
Relay Output Operation
PQ1 uses normally-closed dry relay contacts. When a power quality event is detected, the related contact opens and then recloses at the end of the event. This allows the PQ1 to act like a clear event switch for PLCs, SCADA inputs, machine controllers and alarm circuits.
| Relay Output |
Purpose |
Integration Example |
| Impulse / Swell |
Indicates impulse or swell event. |
Connect to alarm, event logger or digital input. |
| Minor Sag |
Indicates a voltage sag event according to the selected curve. |
Log disturbance before it becomes a machine trip. |
| Major Sag |
Indicates a deeper sag or more severe supply disturbance. |
Trigger priority alarm or equipment protection logic. |
Control-system use: The relay outputs can be connected to PLC digital inputs, SCADA event inputs, machine error logs, alarm relays or remote monitoring systems.
Built-In Threshold Standards
PQ1 includes preset response curves for common power quality standards and equipment immunity references. This makes it practical for equipment builders, facilities teams and maintenance teams that need a simple way to monitor whether the incoming mains supply meets the selected tolerance curve.
SEMI F47
Commonly used for semiconductor tool voltage sag immunity reference.
ITIC / CBEMA
Used for information technology and business equipment power acceptability curves.
IEC / EN
Includes IEC and EN power quality / immunity related response thresholds.
MIL-STD
Supports selected military / shipboard / aircraft-related threshold references.
ZA / NRS
Includes selected regional power quality threshold references.
Standard Mode
Allows quick use without custom engineering or software configuration.
Technical Specifications
| Parameter |
Specification |
| Product Type |
Power quality relay / power quality sensor |
| Input Voltage |
Nominal 100 / 110 / 120 / 200 / 208 / 220 / 230 / 240Vrms |
| Connection |
May be installed phase-to-neutral or phase-to-phase, provided nominal voltage is in range |
| Frequency |
50Hz / 60Hz / 400Hz automatic adaptation |
| Higher Voltage Use |
277Vrms to 600Vrms applications may be monitored using an external step-down transformer |
| Detected Events |
Voltage sags / dips, swells, interruptions and impulses |
| Impulse Detection |
Down to 500 nanoseconds |
| Relay Outputs |
3 normally-closed dry relay contacts: impulse / swell, minor sag and major sag |
| Relay Rating |
300mA, 30Vac or 30Vdc |
| Relay Action |
Contacts open when a power disturbance is detected and reclose at the end of the event |
| Minimum Contact Open Duration |
3 seconds, regardless of event duration |
| Mounting |
DIN rail or panel / chassis mounting |
| Software Requirement |
No software or computer required |
Typical Applications
Semiconductor Tools
Detect sag, interruption and impulse events that may cause tool trips or process interruption.
Automatic Manufacturing
Log power quality events into machine fault records and reduce trial-and-error troubleshooting.
Medical Equipment
Provide simple event indication for sensitive laboratory or medical electrical equipment.
Elevator Controls
Detect supply disturbances that may affect controller operation or create nuisance faults.
SCADA and PLC Panels
Connect relay contacts directly to digital inputs for event logging and alarms.
Data Centres and Telecom
Use as a low-cost power event indicator for critical control and support systems.
Single-Phase and Three-Phase Use
PQ1 is a single-phase power quality sensor. It can be used on individual phases, or three PQ1 units can be combined to monitor a three-phase supply. It may be connected phase-to-neutral or phase-to-phase, as long as the nominal voltage is within the input range or stepped down through a suitable transformer.
Three-phase note: For three-phase monitoring, use one PQ1 per phase or per phase-to-phase point depending on the monitoring objective and system configuration.
Why Use PQ1?
Many equipment faults are blamed on the machine, drive, PLC or controller before the incoming mains supply is checked. PQ1 provides a practical way to confirm whether a voltage sag, swell, interruption or impulse happened at the same time as the equipment fault.
- Reduces repeated site visits and uncertain troubleshooting
- Provides clear relay event signals for machine or SCADA logs
- Helps identify whether power quality was involved in a trip or shutdown
- Provides fast deployment without software setup
- Works well as a low-cost event detector before deploying a full power quality analyser
Integration with IoTWatt 4.0 and Monitoring Systems
PQ1 can be connected to digital input modules, PLCs, remote I/O, SCADA systems or IoT gateways. The relay contacts can then be used to create alarms, event logs, maintenance tickets or power quality event dashboards.
- Connect relay outputs to PLC or remote I/O digital inputs
- Log sag, major sag and impulse / swell events separately
- Use event timestamps from the receiving system for incident correlation
- Combine with power meters or full PQ analysers for deeper event investigation
- Use with IoTWatt 4.0 to generate alarms, tickets and site-level event visibility
PQ1 Supply, Setup and Integration
Saturn Pyro supports Powerside PQ1 power quality relay applications for semiconductor tools, manufacturing lines, PLC / SCADA panels, elevators, medical equipment, data centres, telecom facilities and IoTWatt 4.0 monitoring projects in Malaysia.
Enquire Now
More detail about Saturn Pyro Sdn Bhd
Malaysia
