Model: HMJ9001-QW
Product Overview
The HMJ9001-QW Wireless Multifunction Partial Discharge Detector is designed for on-site partial discharge (PD) detection across a wide range of high-voltage equipment. It integrates multiple detection methods, including Transient Earth Voltage (TEV), Ultrasonic (AE), High Frequency Current Transformer (HFCT), and Ultra High Frequency (UHF) techniques, to accurately detect and analyze PD phenomena.
This device is ideal for condition monitoring of switchgear, ring main units (RMUs), GIS, power cables, transformers, and overhead lines. Equipped with wireless communication technology, the detector transmits data to Android smartphones via WiFi and Bluetooth, enabling real-time analysis, processing, and visualization of partial discharge data.
Key Features
1、Wireless Data Transmission: Sensor data is wirelessly transmitted to an Android smartphone, making it highly adaptable for complex field environments.
2、Multi-Algorithm Analysis: Built-in algorithms effectively distinguish between genuine partial discharge and external interference.
3、Multiple Sensor Compatibility: Supports various sensors including Ultrasonic (contact and air-coupled), UHF, HFCT, to meet diverse monitoring needs.
4、Comprehensive Detection: Simultaneous monitoring of TEV, ultrasonic, HFCT, and UHF signals to evaluate PD frequency and intensity.
5、Severity Indicators: Visual alarms using red, yellow, and green LEDs indicate the severity of partial discharge.
6、PRPD & PRPS Mapping: Provides Phase-Resolved Partial Discharge (PRPD) and Phase-Resolved Pulse Sequence (PRPS) mapping to classify PD types.
7、Time Domain Waveform: Captures typical discharge waveforms with 20ms raw time-domain data.
8、Data Management & Reporting: Includes advanced data management software for comprehensive analysis and automated report generation.
9、One-Click Report Export: Easy export of analytical reports.
Technical Specifications
- Time Domain Waveform: 20ms original waveform capture
- Mapping: PRPD and PRPS patterns with integrated typical PD maps
- Data Storage: Supports saving and replay of time-domain and spectrum data
- Storage Capacity: 16GB internal memory
- Operating System: Embedded Linux & Android
- Communication Interfaces: USB, WiFi, Bluetooth, NFC
- Application: Data visualization on Android smartphones
- Battery Life: ≥8 hours of continuous operation
Applications
- Switchgear Partial Discharge Testing
- Transformer Insulation Monitoring
- GIS and RMU PD Detection
- High Voltage Cable and Overhead Line Inspection
Frequently Asked Questions about wireless multifunction partial discharge detector
What is the wireless multifunction partial discharge detector (HMJ9001-QW) used for?
The wireless multifunction partial discharge detector — model HMJ9001-QW is designed for periodic live-line partial discharge inspection and fault locating. It is deployed in substations, distribution rooms, cable tunnels and industrial plants, where it gives maintenance teams continuous or periodic visibility of insulation condition so that defects can be identified before they develop into unplanned outages.
Is this detector suitable for periodic inspection rather than permanent monitoring?
Yes. The HMJ9001-QW is a portable instrument intended for periodic live-line surveys: an inspector walks the switchgear or cable route, takes readings at defined test points, and compares them against the historical trend for the same point. This approach is the standard complement to permanent online monitoring — it covers a large number of assets at low cost and identifies the few units that justify a permanently installed monitor.
Is installation possible without an outage?
In most cases yes. Because the wireless multifunction partial discharge detector is installed on the equipment while it remains energised, the work is normally carried out as a live-line operation by qualified personnel following the site safety rules. Where a sensor must be coupled to an earthed screen, bonded connection or gas compartment, a short outage may be required — this is confirmed during the site survey.
Does HUWOR support OEM/ODM and what is the delivery lead time?
Yes. Zhuhai Huawang Technology Co., Ltd. supplies the wireless multifunction partial discharge detector under its own brand and also supports OEM/ODM supply, including private labelling, custom firmware functions and integration with the customer’s monitoring platform. Standard units are typically quoted with a lead time confirmed at order stage depending on quantity and configuration; sample and pilot orders are supported.
Applications
The wireless multifunction partial discharge detector is used for periodic live-line partial discharge inspection and fault locating. Typical installation sites include substations, distribution rooms, cable tunnels and industrial plants. It is applied both on new assets, where the monitoring function is built into the asset from the start, and on existing assets where it is retrofitted to extend the information available to the maintenance team.
How it works
The instrument converts the physical quantity of interest into an electrical signal, conditions and digitises that signal in the field unit, and passes the result to the monitoring platform or to the operator. Condition assessment relies on the trend rather than on a single reading: the value recorded today is compared with the commissioning value and with the historical series for the same measurement point, and it is the direction and rate of change that indicate whether the asset is degrading.
Installation and commissioning
Installation follows three steps: a site survey to confirm the mounting position, the communication path and the power arrangement; mechanical fitting of the sensor or the use of the instrument on the test point; and finally commissioning, where the readings are verified against a reference and the alarm thresholds are set.
Standards and documentation
Type test reports, calibration certificates and installation documentation are provided with the supply. Where a project requires the equipment to be verified against a specific national or utility standard, the applicable clauses should be stated in the enquiry so that the test scope can be confirmed at quotation stage.
Frequently Asked Questions about wireless multifunction partial discharge detector
What is the wireless multifunction partial discharge detector (HMJ9001-QW) used for?
The wireless multifunction partial discharge detector — model HMJ9001-QW is designed for periodic live-line partial discharge inspection and fault locating. It is deployed in substations, distribution rooms, cable tunnels and industrial plants, where it gives maintenance teams continuous or periodic visibility of insulation condition so that defects can be identified before they develop into unplanned outages.
Is this detector suitable for periodic inspection rather than permanent monitoring?
Yes. The HMJ9001-QW is a portable instrument intended for periodic live-line surveys: an inspector walks the switchgear or cable route, takes readings at defined test points, and compares them against the historical trend for the same point. This approach is the standard complement to permanent online monitoring — it covers a large number of assets at low cost and identifies the few units that justify a permanently installed monitor.
Is installation possible without an outage?
In most cases yes. Because the wireless multifunction partial discharge detector is installed on the equipment while it remains energised, the work is normally carried out as a live-line operation by qualified personnel following the site safety rules. Where a sensor must be coupled to an earthed screen, bonded connection or gas compartment, a short outage may be required — this is confirmed during the site survey.
Does HUWOR support OEM/ODM and what is the delivery lead time?
Yes. Zhuhai Huawang Technology Co., Ltd. supplies the wireless multifunction partial discharge detector under its own brand and also supports OEM/ODM supply, including private labelling, custom firmware functions and integration with the customer’s monitoring platform. Standard units are typically quoted with a lead time confirmed at order stage depending on quantity and configuration; sample and pilot orders are supported.
Applications
The wireless multifunction partial discharge detector is used for periodic live-line partial discharge inspection and fault locating. Typical installation sites include substations, distribution rooms, cable tunnels and industrial plants. It is applied both on new assets, where the monitoring function is built into the asset from the start, and on existing assets where it is retrofitted to extend the information available to the maintenance team.
How it works
The instrument converts the physical quantity of interest into an electrical signal, conditions and digitises that signal in the field unit, and passes the result to the monitoring platform or to the operator. Condition assessment relies on the trend rather than on a single reading: the value recorded today is compared with the commissioning value and with the historical series for the same measurement point, and it is the direction and rate of change that indicate whether the asset is degrading.
Installation and commissioning
Installation follows three steps: a site survey to confirm the mounting position, the communication path and the power arrangement; mechanical fitting of the sensor or the use of the instrument on the test point; and finally commissioning, where the readings are verified against a reference and the alarm thresholds are set.
Standards and documentation
Type test reports, calibration certificates and installation documentation are provided with the supply. Where a project requires the equipment to be verified against a specific national or utility standard, the applicable clauses should be stated in the enquiry so that the test scope can be confirmed at quotation stage.
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