Description

Archmeter PA330 Multi-Function Power Meter

PA330 Multi-Function Power Meter

The Archmeter PA330 is a compact 96 mm × 96 mm multi-function power meter designed for single-phase and three-phase electrical monitoring. It provides wide measurement coverage for voltage, current, active power, reactive power, apparent power, energy, power factor, frequency, demand, power quality and operating time.

With Class 0.5 active energy accuracy, built-in RS485 communication, large backlit LCD display, alarm output and pulse / alarm output functions, the PA330 is suitable for panel metering, feeder monitoring, energy management, basic power quality visibility and integration with SCADA, BMS, EMS or IoTWatt 4.0.

Meter Type Single-phase and three-phase multi-function power meter

Accuracy V / I < 0.2%, W 0.5%, Wh < 0.5%

Communication Built-in RS485, optional LonTalk

Display Large mono LCD with adjustable backlight

Product Description

PA330 is designed for modern power monitoring applications where one compact meter must provide electrical measurement, energy monitoring, power quality indication and communication. It measures more than 90 electrical parameters, including voltage, current, power, energy, power factor, frequency, demand, THD, unbalance, voltage eligibility and min / max values.

The meter is housed in a standard DIN 96 mm × 96 mm panel format, making it easy to install in switchboards, distribution boards, MCC panels, control panels and equipment panels. The integrated RS485 port allows the PA330 to be connected to third-party SCADA, BMS, EMS or energy monitoring platforms.

Best use case: PA330 is suitable for cost-effective feeder-level metering where electrical parameters, energy, THD, unbalance, demand, min / max values and RS485 communication are required.

Key Features

IEC 62053-22 Class 0.5

Supports Class 0.5 active energy measurement for reliable energy monitoring and cost allocation applications.

High Measurement Accuracy

Voltage and current accuracy better than 0.2%, active power accuracy 0.5% at PF 1.0 and Wh accuracy better than 0.5%.

Bi-Directional Energy

Supports total, import, export and net energy indication for applications with delivered and received energy flow.

More Than 90 Parameters

Measures voltage, current, power, energy, demand, frequency, power factor, unbalance, THD and min / max values.

Current Direction Setting

Allows correction of display value when CT direction or polarity requires adjustment during commissioning.

Large Backlit LCD

Large 68 mm × 59 mm mono LCD with 4-stage backlight adjustment for easy local operation.

Power Quality Indication

Displays voltage / current THD, voltage / current unbalance, voltage eligibility and min / max values.

RS485 Communication

Built-in RS485 communication makes the meter suitable for integration with SCADA, EMS, BMS and IoTWatt 4.0.

Digital Outputs

Includes two digital outputs: DO1 for alarm output and DO2 for pulse or alarm output.

Measured Parameters

The PA330 front display provides multiple display pages for electrical monitoring. The display includes values for voltage, current, active power, reactive power, apparent power, power factor, frequency, demand, eligibility rate, unbalance rate, energy and time.

Parameter Group	Available Measurements / Display Values
Voltage	Line-to-line voltage, line-to-neutral voltage, average voltage and max / min voltage values.
Current	Phase current, average current and max / min current values.
Active Power	Phase and total kW, including max / min active power.
Reactive Power	Phase and total kvar, including max / min reactive power.
Apparent Power	Phase and total kVA, including max / min apparent power.
Power Factor	Total power factor, load characteristic indication and max / min power factor.
Frequency	System frequency, maximum frequency and minimum frequency.
Demand	Previous power demand, current power demand, maximum power demand, minimum power demand and demand subinterval remaining time.
Energy	Total active energy, total reactive energy and total apparent energy.
Power Quality	Voltage THD, current THD, voltage / current unbalance rate and voltage eligibility.
Time and Status	Year / month / day, hour / minute / second, alarm buzzer status, pulse output / communication indicator and DO status.

Display Functions

Display Area / Indicator	Function
Main measurement area	Displays V, I, kW, kvar, kVA, PF, frequency, demand, eligibility rate and unbalance rate.
Energy and time area	Displays energy values and time information.
Load percentage indicator	Provides quick visual loading indication.
Unbalance / THD indicators	Indicates voltage / current unbalance and THD display pages.
Measurement type indicator	Shows the current measurement group such as current, voltage, energy or power.
Alarm buzzer icon	Shows alarm buzzer ON / OFF status.
Pulse and communication indicator	Indicates pulse output and communication activity.
Power factor and load characteristic area	Displays PF and load characteristic indication.
Units area	Displays units such as V, kV, kW, MW, A, kVA, MVA, kvar, Mvar, Hz, %, kWh, kVAh and kvarh.
Function buttons	Front buttons include M, P, E/T and V/A functions.
Digital output status	Shows DO1 and DO2 output status.

Technical Specification

Item	Specification
Auxiliary Power	AC 80–264 V / DC 100–300 V, maximum 2.3 W.
Input Voltage	CAT II, 10 V–600 V line-to-line.
Input Current	2 mA–5 A.
Accuracy	Voltage / current 0.2%, active power 0.5% at PF = 1.0, Wh < 0.5%.
Frequency	45–65 Hz.
Measurements	V, I, kW, kvar, kVA, kWh, kvarh, kVAh, PF, frequency, demand and running hour.
Alarms	None, over voltage / current, over frequency, under voltage / current, under frequency, over demand and general alarm conditions.
Power Quality	Voltage / current THD, voltage / current unbalance, voltage eligibility and min / max parameters.
Display	Mono 68 mm × 59 mm LCD with adjustable backlight.
Communication	1 × RS485, optional LonTalk.
Timer	RTC.
Wiring Ports	Auxiliary power, voltage, current, DO1, DO2, RS485 and optional LON.
I/O	2 digital outputs: DO1 alarm output, DO2 pulse / alarm output.
Operating Temperature	-20°C to 70°C.
Storage Temperature	-25°C to 80°C.
Humidity	20–90% RH.
Protection Rating	Panel: IP52; case: IP20.
Dimensions	96 mm (W) × 96 mm (H) × 97 mm (D).
Power Consumption	0.45–0.7 W with backlight off, 1.3–1.7 W with maximum backlight, maximum 2.3 W with backlight and Lon module.

Typical Applications

Panel Metering

Use as a compact digital meter for main panels, sub-distribution panels and control panels.

Feeder Monitoring

Monitor incoming or outgoing feeders for voltage, current, power, energy, demand and power factor.

Energy Monitoring

Track kWh, kvarh and kVAh values for cost allocation, usage review and energy performance visibility.

Power Quality Review

Use THD, unbalance and voltage eligibility values for basic power quality awareness.

Alarm Output Applications

Use digital outputs for alarm signalling, pulse output or integration with external systems.

SCADA / BMS / EMS Integration

Use RS485 communication for integration with monitoring systems, gateways or IoTWatt 4.0.

Typical System Integration

PA330 can be installed on a switchboard or equipment panel and connected through RS485 to a gateway, BMS, EMS, SCADA or IoTWatt 4.0. The meter provides live values, energy readings, demand, THD, unbalance and alarm information for remote monitoring.

Integration with IoTWatt 4.0

When connected to IoTWatt 4.0, PA330 meter data can be used for energy dashboards, feeder comparison, load profiling, abnormal consumption detection, power factor review, basic power quality visibility and digital energy audit workflows.

Monitor kWh, kW, kvar, kVA, voltage, current, frequency and power factor.
Use demand values to understand feeder loading and peak demand behaviour.
Use voltage / current THD and unbalance values for basic power quality visibility.
Use min / max values to identify abnormal operating conditions.
Use energy data for baseline creation, cost allocation and energy audit evidence.
Connect through RS485 using a suitable gateway such as RS2LAN, RS2MQTT or RS2WLAN.

Integration note: PA330 is suitable for IoTWatt 4.0 projects where cost-effective RS485 metering is required for distribution boards, feeders, MCC panels and equipment-level monitoring.

Recommended Deployment Checklist

Confirm the electrical system: single-phase or three-phase.
Confirm direct voltage input requirement and voltage level.
Confirm CT ratio, CT secondary, CT class, burden and CT polarity.
Confirm auxiliary power availability: AC 80–264 V or DC 100–300 V.
Confirm RS485 communication parameters: address, baud rate, parity and wiring.
Confirm if optional LonTalk communication is required.
Confirm alarm output and pulse output requirements for DO1 and DO2.
Confirm panel cut-out and 96 mm × 96 mm installation clearance.
Confirm integration with SCADA, BMS, EMS, gateway or IoTWatt 4.0.
Test voltage phase sequence, CT direction, display values, communication and alarm / pulse outputs during commissioning.

PA330 Meter Supply, Commissioning and IoTWatt 4.0 Integration

Saturn Pyro supports Archmeter PA330 multi-function power meters for panel metering, feeder monitoring, RS485 communication, alarm / pulse output configuration, SCADA / BMS / EMS connectivity and IoTWatt 4.0 digital energy audit projects in Malaysia.

Enquire Now

More detail about Saturn Pyro Sdn Bhd