MB10 HV Bridge & Burnout System

The MB10 High-Voltage Location Bridge measures and conditions high-resistance cable faults up to 60 kV with ±(0.2%×L+1) m accuracy — factory direct at $10,400.

What Is the MB10 HV Bridge & Burnout System?

The MB10 combines a high-voltage breakdown unit (0–60 kV) and an intelligent bridge for precise fault measurement on long feeders. It performs one-key automatic operation with digital fault distance display. Four-terminal resistance measurement eliminates lead resistance errors.

Why Do Long Feeders Need Bridge Methods?

Faults beyond the reach of standard TDRs — high-resistance faults on long transmission and distribution feeders — require bridge measurement for accurate distance calculation. The MB10's Murray-loop-compatible bridge locates faults up to 50 km with high precision. Its burnout function converts stubborn high-resistance faults into locatable low-resistance arcs.

What Are the MB10's Key Specifications?

The MB10 provides 0–60 kV breakdown output with ~600 mA short-circuit current, plus bridge output of 0–3 kV at ~600 mA. Location range covers 1–50,000 m with ±(0.2%×L+1) m accuracy. It handles double-end GIS and ultra-long cable faults without removing cables from service.

How Does the MB10 Handle Sheath and GIS Faults?

Specialized cable configurations — double-end GIS terminations and cross-bonded systems — require the MB10's combined bridge and burnout capability. Its one-key automatic operation reduces operator error on complex measurements. The digital readout converts the bridge ratio to cable distance directly.

Key Features

• Integrates breakdown and intelligent bridge functions
• One-key automatic operation with digital fault distance display
• Four-terminal resistance measurement avoids lead resistance errors
• Locates double-end GIS and ultra-long cable faults without removal

Technical Specifications

Applicable Scenarios

• High-resistance fault measurement — precise measurement beyond TDR range
• Long feeder fault location — bridge methods for transmission feeders
• Sheath fault localization — locate faults on PILC and XLPE cables
• Burnout conditioning — convert stubborn faults into locatable arcs
• Cable diagnostic specialists — advanced analysis for contractors and labs

Testing Method

1. Isolate & ground — confirm cable isolation and safe grounding
2. Configure the bridge — connect leads to healthy and faulted phases
3. Apply bridge voltage — ramp HV until balance; read the fault ratio
4. Calculate distance — convert ratio to cable distance
5. Burnout conditioning — switch to burnout mode if resistance remains high
6. Re-measure — repeat for the conditioned fault
7. Hand off to pinpointing — proceed to acoustic pinpointing
8. Discharge & disconnect — auto-discharge, verify zero voltage

Quality & Delivery

• 100% factory tested — calibration and test certificate included
• CE certified — EU compliance
• Export packaging — foam-lined transit case
• Lead time — 15–20 days
• After-sales — 1-year warranty, lifetime maintenance, free training

FAQ

What is an HV location bridge used for?

It measures high-resistance faults on long feeders that standard TDRs cannot detect, using bridge methods.

How accurate is the MB10?

The MB10 achieves ±(0.2%×L)+1 m accuracy across a 1–50,000 m range.

What is burnout conditioning?

A function that applies high current to convert high-resistance faults into locatable low-resistance arcs.

Can the MB10 handle GIS cable faults?

Yes — it locates double-end GIS and cross-bonded system faults without cable removal.

What is the MB10's price?

$10,400 with a 1-year warranty and lifetime maintenance support.