Product Introduction
MOEORW-WHFCT is a high-frequency current sensor developed specifically for partial discharge monitoring of high-voltage power cables. When partial discharge occurs inside the cable, it generates high-frequency pulse current that flows to the ground through the grounding line at cable joints or terminations.
This sensor adopts a split-core Rogowski Coil design, which can be directly clamped on the cable grounding line without power outage or modification of the original line. The built-in shielding layer effectively suppresses on-site electromagnetic interference and accurately extracts high-frequency discharge current signals. The corrosion-resistant metal housing achieves IP68 protection level, ensuring stable operation in harsh outdoor environments such as humidity and salt spray.
Product Parameter (specification)
|
Parameter |
Value |
|
Principle |
Rogowski Coil |
|
Type |
Split-core Ring |
|
Bandwidth |
1MHz-30MHz |
|
Transfer Impedance |
>80Ω |
|
Sensitivity |
<5pC |
|
Inner Diameter |
45mm/65mm optional |
|
Protection Level |
IP68 |
|
Salt Spray Test |
96 hours |
|
Interface |
N-50 or BNC optional |
|
Housing Material |
Metal |
Product Features
- Rogowski Coil principle, non-intrusive installation on cable grounding lines
- Split-core ring structure, no need to disconnect grounding line for installation
- Metal shielded housing, strong anti-electromagnetic interference capability
- IP68 protection, passes 96-hour salt spray test, suitable for long-term outdoor use
- Sensitivity <5pC, detects weak PD signals at cable joints and terminations
Product Application
- High-voltage power cable partial discharge monitoring
- Cable joint and termination fault detection
- Substation cable line online monitoring
- Wind farm power cable insulation assessment
- Industrial plant power cable preventive testing
Company Qualifications
FAQ
Q1: What size of grounding line is suitable for this sensor?
A: The 45mm inner diameter model is suitable for grounding lines below 300mm², and the 65mm model is suitable for 300-630mm² grounding lines.
Q2: Does it need to disconnect the grounding line during installation?
A: No. The split-core ring design allows direct clamping on the grounding line without disconnection, ensuring safe live installation.
Q3: What is the minimum detectable discharge quantity?
A: The sensitivity is less than 5pC, which can detect weak partial discharge signals at cable joints in the early stage.
Q4: Can it be used in coastal areas with high salt spray?
A: Yes. The metal housing passes 96-hour salt spray test and IP68 protection grade, suitable for harsh coastal environments.
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