EN
GDPD-313P/314P Handheld Switchgear Partial Discharge Detector
GDPD-313P/314P Digital Intelligent Handheld Switchgear Partial Discharge Detector with TEV Transient Earth Voltage and AE Acoustic Emission Dual Detection Technology, Pistol Ergonomic Design, 4.3-inch Color Touch Screen, for 10kV-35kV Switchgear and Ring Main Unit Live Detection.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDPD-313P/314P is a cost-effective, field-optimized handheld partial discharge detectorexclusively designed for live detection of 10kV-35kV switchgears and ring main units. It fully complies with DL/T 1630-2016, DL/T 1432.3-2016 and IEC 60270:2015 standards, adopting an innovative pistol ergonomic design and integrating TEV transient earth voltage and AE acoustic emission dual detection technologies to achieve non-contact live detection without power outage or climbing.
The instrument is available in two models: GDPD-313P (Basic Type) with built-in TEV and built-in air-coupled ultrasonic sensors, suitable for daily routine inspection; GDPD-314P (Enhanced Type) supports external ultrasonic concentrator, HFCT high-frequency current sensor and UHF ultra-high frequency sensor, which can be extended to detect power cables and GIS equipment. Equipped with a 4.3-inch high-resolution color touch screen, it displays real-time discharge waveform, amplitude and pulse count. The unique three-color early warning system intuitively indicates the defect severity level (green: normal, yellow: attention, red: abnormal). The built-in headphone monitoring function allows operators to distinguish discharge types through auditory characteristics. With a built-in rechargeable lithium battery and ultra-light weight of less than 1kg, it supports one-hand operation and is ideal for all-day on-site inspections. Ideal for power company distribution network inspection, substation switchgear daily maintenance, switchgear factory outgoing inspection and acceptance test.
Specifications
| Parameter | GDPD-313P (Basic Type) | GDPD-314P (Enhanced Type) |
|---|---|---|
| TEV Detection | ||
| Sensor Type | Built-in capacitive coupling | Built-in capacitive coupling |
| Frequency Range | 10MHz ~ 100MHz | 10MHz ~ 100MHz |
| Measurement Range | 0 ~ 50dB | 0 ~ 50dB |
| Accuracy | ±1dB | ±1dB |
| Resolution | 1dB | 1dB |
| AE Detection | ||
| Sensor Type | Built-in air-coupled | Built-in/switchable external air-coupled |
| Resonance Frequency | 40kHz ± 1kHz | 40kHz ± 1kHz |
| Measurement Range | -10dBuV ~ 70dBuV | -10dBuV ~ 70dBuV |
| Sensitivity | -68dB | -68dB |
| Accuracy | ±1dB | ±1dB |
| External Ultrasonic Concentrator | - | Optional (10dB gain, 5m laser positioning) |
| Optional Sensors | ||
| HFCT Sensor | - | Optional (50kHz~30MHz, 10pC sensitivity) |
| UHF Sensor | - | Optional (300MHz~1500MHz, -75dBm~-35dBm) |
| System Parameters | ||
| Display | 4.3-inch color TFT LCD capacitive touch screen | 4.3-inch color TFT LCD capacitive touch screen |
| Early Warning System | Three-color (green/yellow/red) | Three-color (green/yellow/red) |
| Headphone Output | 3.5mm stereo jack | 3.5mm stereo jack |
| Data Storage | TF card (up to 32GB) | TF card (up to 32GB) |
| Data Export | USB | USB |
| Power Supply | ||
| Battery Type | Built-in 12V/2500mAh lithium battery | Built-in 12V/2500mAh lithium battery |
| Battery Life | ≥4 hours continuous operation | ≥4 hours continuous operation |
| Charging Time | ~7 hours (full charge) | ~7 hours (full charge) |
| General Parameters | ||
| Dimensions | Body: 240×240×80mm, Handle: 146×46.5×40mm | Body: 240×240×80mm, Handle: 146×46.5×40mm |
| Weight | <1kg (including battery) | <1kg (including battery) |
| Housing | Rugged ABS plastic with rubber protective corners | Rugged ABS plastic with rubber protective corners |
| Operating Temperature | -10℃ ~ +50℃ | -10℃ ~ +50℃ |
| Operating Humidity | ≤90% RH (non-condensing) | ≤90% RH (non-condensing) |
| Altitude | ≤2000m | ≤2000m |
| Compliance | DL/T 1630-2016, DL/T 1432.3-2016, IEC 60270:2015 | DL/T 1630-2016, DL/T 1432.3-2016, IEC 60270:2015 |
Applications
Core Test Objects
- Switchgears: 10kV-35kV indoor/outdoor metal-enclosed switchgears
- Ring main units: 10kV-35kV SF₆-insulated and air-insulated ring main units
- Cable terminals: High-voltage cable terminals and intermediate joints
- Distribution transformers: 10kV-35kV dry-type and oil-immersed distribution transformers
- Other equipment: Reactors, surge arresters, disconnect switches
Typical Usage Scenarios
- Power companies: Distribution network daily inspection and substation routine maintenance
- Switchgear manufacturing plants: Factory type tests and outgoing quality control
- Power engineering companies: Distribution network construction and renovation project acceptance
- Industrial and mining enterprises: Internal power equipment routine inspection and maintenance
- Third-party testing institutions: Basic acceptance testing of distribution equipment
Advantages
Compliance with International Standards
Fully meets DL/T 1630-2016, DL/T 1432.3-2016 and IEC 60270:2015 standards → test results are globally recognized
Pistol Ergonomic Design
One-hand operation, no need for climbing or contact → eliminates safety risks of high-altitude operations, greatly improves inspection efficiency
TEV+AE Dual Detection Technology
Covers all main types of switchgear insulation defects → cross-validation reduces false alarms and missed alarms
Dual Model Selection
Basic type for daily inspection, enhanced type for in-depth diagnosis → meets different application needs, cost-effective
Three-Color Early Warning System
Intuitive indication of defect severity → no professional knowledge required, easy for front-line operators to use
FAQ
Q: Does the test require power outage?
A: No. GDPD-313P/314P are live detection instruments, which can perform partial discharge detection on operating equipment without power outage, greatly reducing the impact on power supply.
Q: How to judge the severity of defects?
A: The instrument adopts a three-color early warning system:
- Green (normal): TEV <20dB, AE <30dBuV, no obvious discharge signal
- Yellow (attention): TEV 20~30dB, AE 30~40dBuV, weak discharge signal, need to retest within 6 months
- Red (abnormal): TEV >30dB, AE >40dBuV, strong discharge signal, need to arrange power outage maintenance as soon as possible
