Overview
The APView400 is a high-performance power quality monitor strictly designed according to IEC 61000-4-30 Class A standards, suitable for power supply systems up to 35kV. It features a multi-core heterogeneous platform and an embedded Linux operating system, integrating harmonic analysis, transient event capture, transient recording, flicker monitoring, and fault recording. It provides accurate and reliable power quality data for industries such as semiconductors, petrochemicals, steel, healthcare, data centers, transportation, and renewable energy generation.
Highlight
Class A Accuracy & High Performance
- 1024 samples/cycle
- 32GB SSD storage
- 5″ color LCD display
Comprehensive Transient Analysis
- Swell/dip/interruption recording
- Dip source location
- ITIC & SEMI F47 curves
Abundant Interfaces & Protocols
- 4V + 4I inputs
- 2 RS485 + 2 Ethernet
- IRIG-B & SNTP sync
High Reliability Design
- Class IV EMC certified
- -10℃ to +55℃ operation
- AC/DC dual power supply
Function
| Category | Function | Description |
| Measurement | Voltage/Current RMS | 4V + 4I channels, accuracy Class 0.1 |
| Frequency/Deviation | Accuracy ±0.001Hz | |
| Active/Reactive/Apparent Power | Accuracy ±0.2% | |
| Power Factor | Accuracy ±0.5% | |
| 2nd~63rd Harmonics | RMS, ratio, phase angle, THD, TDD, K-factor, crest factor | |
| Interharmonics | 0.5th~62.5th RMS, ratio | |
| Voltage Flicker | Pst, Plt, accuracy ±5% | |
| Voltage Fluctuation | Accuracy ±0.2% Un | |
| Three-phase Unbalance | Negative/zero sequence voltage/current unbalance | |
| Voltage Swell/Dip/Interruption | Amplitude error <±0.2%, time error <±20ms, dip source location | |
| Transient Voltage/Current | 20μs sampling, amplitude error <±0.2% | |
| Metering | Energy | Forward/reverse active/reactive energy, Class 0.5 |
| Multi-tariff Energy | 4 tariffs (external required) | |
| Demand Recording | Current/power demand | |
| Historical Data | 1-min statistics stored for 90 days, monthly extremes, daily frozen, 12-month history | |
| Others | Event Log | Transient events, steady events, system log, total 200 entries |
| Fault Recording | Event-triggered/manual/timed/remote, sampling points settable (64~1024/cycle) | |
| Web Server | Embedded, multi-level remote access | |
| Relay Output | 5 programmable DO (bistable/monostable/impulsive) | |
| Time Sync | IRIG-B hard sync (±1ms), SNTP network sync | |
| Communication | 2×RS485 (Modbus-RTU), 2×Ethernet (Modbus-TCP, IEC61850 optional, FTP) |
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Specification
| Parameter | Specification |
| Auxiliary Power | AC/DC 110V, 220V or DC24V/48V, tolerance -20%~+20%, consumption ≤15W |
| AC Voltage Input | Rated: 57.74V/100V or 220V/380V or 400V/690V Overload: 1.2× continuous, 4× for 1s Consumption: ≤0.5VA per channel |
| AC Current Input | Rated: 5A Overload: 1.2× continuous, 20× for 1s Consumption: ≤0.5VA per channel |
| Accuracy | Voltage/Current: ±0.1% P, Q, S: ±0.2% Active Energy: Class 0.5 Frequency Deviation: ±0.001Hz Harmonics: Compliant with IEC 61000-4-30 Class A |
| Digital Input | 5 channels, passive dry contacts, external power required (AC/DC 220V/110V or DC24V/48V) |
| Digital Output | 5 channels, programmable relays, normally open Continuous current ≥16A (AC250V/DC24V), short-term ≥30A |
| Communication | 2×RS485 (Modbus-RTU, IRIG-B) 2×Ethernet (10/100M, Modbus-TCP, IEC61850 optional, FTP) 1×USB (maintenance) |
| Time Sync | IRIG-B hard sync (±1ms), SNTP network sync, clock accuracy ±1s/24h |
| Operating Environment | Temperature: -10℃～+55℃ Humidity: 5%～95% non-condensing Altitude: ≤2500m |
| Protection Degree | IP51 (front panel) |
| Dimensions | Main unit: 190mm × 156mm × 171mm (W×H×D) |
| Mounting | Embedded, cut-out: 181mm × 144mm |
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FAQ
The device is suitable for power systems up to 35kV. It can accept secondary voltages such as 57.74V/100V, 220V/380V, 400V/690V, and can match primary system voltage by setting the PT ratio.
This feature analyzes voltage and current changes during a dip event using a single device, applying the equivalent impedance method to determine whether the disturbance source is on the line side (utility) or busbar side (user). No multiple devices are required; a single point can complete the location.
It supports Modbus-RTU (RS485), Modbus-TCP (Ethernet), IEC61850 MMS (optional), and FTP. For conventional monitoring systems, Modbus can be used; for digital substations, IEC61850 enables seamless integration; FTP is used for batch export of waveform data.
Equipped with 32GB SSD. 1-minute statistics can be stored for up to 90 days (FIFO). Waveform file storage depends on event frequency; under default settings, thousands of files can be stored.
Supports IRIG-B hard sync (via RS485 port) and SNTP network sync. IRIG-B absolute accuracy is ±1ms, clock accuracy ±1s/24h, meeting high-precision transient analysis requirements.
In the “Parameters – Function Parameters” menu, steady-state thresholds (voltage deviation, frequency deviation, harmonics, etc.) and transient thresholds (swell/dip, etc.) can be set. In the “DO Configuration” menu, each alarm function can be associated with any one or more of DO1~DO4, and can be set to bistable, monostable, or impulsive output modes.
Summary
With its Class A accuracy, comprehensive transient analysis, abundant interfaces, and high reliability, the APView400 provides a “panoramic view” of grid power quality, helping users clarify incident responsibility, optimize mitigation plans, and enhance power reliability.
