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OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560
OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560
OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560
OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560
Specifications
Bandwidth :
100kHz-50MHz automatic or manual selection
Operating Temperature :
-20 to +60 C
Certification :
CE/ISO
Maximum Output Voltage :
+30kV or -30kV / +60kV or -60kV / +/-20kV to +/-75kV
Dielectric Loss :
0.1%-5.0%
Packaging Details :
wooden packaging
Inductance :
0.7H-1.1H / 1.2H-2H / 0.7H-2H (option)
Brand Name :
XZH TEST
Oscillation Frequency :
20Hz-850Hz
Positioning Error :
1% of cable length
Price :
Negotiable
Wave Velocity :
100-240m/us
Humidity :
95% (non-condensing)
Measurement Range :
10pC-200nC
Model Number :
XHOW560
MOQ :
1 unit
Place of Origin :
China
Payment Terms :
T/T
Positioning Accuracy :
+/-0.1m
Trend Management :
Automated analysis
Delivery Time :
5-8 work days
Measurement Accuracy :
+/-0.1pC (14-bit sampling)
Supply Ability :
2000 units per year
Description
XHOW560 Series OWTS Partial Discharge Test System| XZH TEST

The XHOW560 Series is an integrated Oscillating Wave Test System (OWTS) engineered for partial discharge (PD) detection, location and insulation diagnosis on 6–35 kV medium-voltage power cables. By applying a damped AC oscillating voltage that reproduces real cable operating conditions, the system excites partial discharge inside hidden insulation defects and then measures both PD intensity and fault position—converting an invisible insulation risk into a measurable, actionable data point before a cable fails.

Applications & Target Audience: Built for B2B buyers who run preventive cable maintenance programmes rather than emergency repair—including wind and solar farm electrical O&M teams, industrial plant power & utilities departments, metro and railway traction power networks, and MV cable insulation diagnostic laboratories—that need to assess and trend the insulation condition of 6–35 kV power cables before breakdown occurs.

Instead of only finding a fault after an outage, the XHOW560 helps operators build a condition-based maintenance strategy: detect weak insulation early, locate the defect precisely, and compare repeated test results over time to decide whether a cable can stay in service, be monitored, or must be replaced.

Key Specifications
ParameterSpecification
Product SeriesXHOW560-Series
ModelsXHOW560-30, XHOW560-60, XHOW560 Customize
Maximum Output Voltage+30kV or -30kV (30) / +60kV or -60kV (60) / ±20kV~±75kV (customize)
Inductance0.7H-1.1H (option) / 1.2H-2H (option) / 0.7H-2H (option)
Data AnalysisManual Analysis, Automatic Analysis (Analog and Digital Filtering)
Measurement Range10pC-200nC
Measurement Accuracy±0.1pC (14-bit sampling)
Oscillation Frequency20Hz-850Hz
Wave Velocity100-240m/us
Bandwidth100kHz-50MHz automatic or manual selection
Positioning Accuracy±0.1m
Positioning Error1% of cable length
Dielectric Loss0.1%-5.0%
Trend ManagementAutomated analysis
DimensionsΦ650 × H600 (30) / Φ650 × H990 (60) / Φ650 according to customization
Weight50kg (30) / 100kg (60) / according to customization
Operating Temperature-20°C to 60°C
Humidity95% (non-condensing)
How the Oscillating Wave Method Works

The XHOW560 does not energize the cable with a fixed-voltage surge. It reproduces the cable’s real operating stress using a damped AC oscillating wave, then listens for the discharge signature of an insulation defect. The test cycle is straightforward:

Series connection & charging: a hollow inductor is connected in series with the cable under test, and a high-voltage DC source charges the series circuit to a preset voltage.
Oscillation generation: when the charging voltage reaches the set point, a high-speed electronic switch closes across the supply, forming a damped oscillating circuit that produces a decaying AC voltage at 20Hz-850Hz—close to the cable’s real service condition.
Partial discharge excitation: the oscillating voltage stresses insulation defects and triggers partial discharge inside the cable, which the coupling capacitor and PD sensor capture.
Precise location: the built-in software uses the pulse reflection method to calculate the defect position, giving ±0.1m positioning accuracy and a positioning error of only 1% of cable length.
Trending & reporting: results are stored in the database, compared against previous tests automatically, and exported as a one-click test report for asset decision-making.
System Composition
High-Voltage Unit
High-voltage output unit with high-voltage divider and high-voltage switch
Partial discharge coupling capacitor and coupling unit
Partial discharge sensor for on-line PD signal capture
Control Unit & Built-in Software
Laptop-based control of the full test procedure, data storage and data analysis
External high-voltage control switch for safe HV output management
Built-in OWTS software: create/edit projects, database management, calibration test (cable length and apparent discharge quantity), voltage withstand test, data browsing and in-depth analysis, and automatic report generation
Laser control technology, high-voltage semiconductor switches, DSP-based digital filtering, and wireless connection / protocol conversion for stable signal acquisition
Core Advantages
Integrated PD detection and location in a single portable system, covering 6–35 kV MV/LV power cables
Damped AC oscillating voltage reproduces real service stress, so hidden defects are excited rather than missed
±0.1pC measurement accuracy on a 10pC-200nC range for early, low-level PD detection
Pulse-reflection positioning with ±0.1m accuracy and 1% cable-length error for fast field location
Automated trend management turns each test into comparable historical data for condition-based maintenance
One-click report generation simplifies documentation for engineering acceptance and asset records
Customizable output voltage up to ±75kV to match different cable classes and voltage networks
FAQ
Q1: Who is the XHOW560 OWTS designed for?
It is designed for B2B buyers running preventive cable maintenance programmes—wind and solar farm electrical O&M teams, industrial plant power departments, metro and railway traction power networks, and MV cable insulation diagnostic laboratories—that assess the insulation condition of 6–35 kV power cables before failure.
Q2: Which cables can it test?
It is mainly used for partial discharge diagnosis of 6–35 kV medium and low-voltage power cables. The standard XHOW560-60 provides +60kV / -60kV output, while the customizable version supports ±20kV~±75kV to match a wider range of cable classes.
Q3: How does it detect and locate partial discharge?
A hollow inductor is connected in series with the cable and charged by a high-voltage DC source; a high-speed switch then forms a damped oscillating circuit that generates a damped AC oscillating voltage at 20Hz-850Hz. This excites partial discharge at insulation defects, and the built-in software uses the pulse reflection method to pinpoint the defect location.
Q4: What measurement and positioning accuracy does it provide?
The system offers a measurement range of 10pC-200nC with ±0.1pC accuracy (14-bit sampling), an oscillation frequency of 20Hz-850Hz, and positioning accuracy of ±0.1m with a positioning error of only 1% of cable length.
Q5: What makes it different from a standard cable fault locator?
A standard cable fault locator finds a fault after it happens. The XHOW560 is a preventive diagnostic system: it detects low-level partial discharge and dielectric loss (0.1%-5.0%) to reveal insulation degradation early, then applies automated trend management to compare results over time—supporting condition-based maintenance decisions instead of emergency repair.

XZH TEST specializes in cable fault detection and electrical testing equipment, providing practical solutions for power utilities, electrical contractors, testing companies and field engineers. Products are usually shipped by international express such as FEDEX, DHL, TNT and ARAMEX; shipping terms can be negotiated by country.

XZH TEST welcomes your inquiry—contact us for OEM options, technical datasheets and a tailored quotation.

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OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560

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Product Detail
Bandwidth :
100kHz-50MHz automatic or manual selection
Operating Temperature :
-20 to +60 C
Certification :
CE/ISO
Maximum Output Voltage :
+30kV or -30kV / +60kV or -60kV / +/-20kV to +/-75kV
Dielectric Loss :
0.1%-5.0%
Packaging Details :
wooden packaging
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OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560
OWTS Oscillating Wave Partial Discharge Test System for 6-35kV Power Cable Insulation Diagnosis | XHOW560

Xi'an Xu&Hui Electromechanical Technology Co., Ltd.

Verified Supplier
3 Years
Since 2013
Business Type :
Manufacturer
Main Products :
TDR Cable Fault Locator, Cable Fault Locator, Cable Fault Pinpointer
Total Annual :
1000000-5000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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