TBM Type Substation

TBM Type Substation Overview & Operational Principle

The TBM Type Substation (Tunnel Boring Machine Substation) from HENGFENGYOU ELECTRIC is a specialized, ultra-compact mobile power station engineered specifically for the extreme working conditions of subterranean shield tunneling and underground mining operations. Because tunneling space is strictly constrained, this substation features a uniquely narrow, long-profile structural layout designed to fit seamlessly onto TBM back-up sleds and gantry trailers.

Capable of stepping down medium high-voltages (10kV, 11kV, 22kV, 33kV, or 35kV) to lower operating voltages for heavy hydraulic cutters, drive motors, and auxiliary tunnel systems, the unit achieves up to an IP55 / IP65 protection rating. It provides robust resistance against continuous underground vibration, high humidity, airborne concrete dust, and ambient moisture, guaranteeing uninterruptible power supply for critical tunneling equipment. Full OEM/ODM customization based on specific TBM cutterhead parameters is available.

Implementation Standards: IEC 62271-200, IEC 60076, GB/T 17467, ISO9001, CE, UL, CSA approved.

TBM Type Substation Technical Specifications & Parameters

Core Advantages & Features of TBM Shield Tunneling Substations

1. Slim Profile & Tailored TBM Structural Integration

• Specially configured narrow-width footprint allows the substation to move through tight tunnel segments and sit directly on the TBM gantry or rail sled without obstructing muck haulage.

• Equipped with heavy-duty towing skids and lifting lugs for fast underground movement as tunnel excavation progresses.

2. Heavy-Duty Shock Absorption & IP55 Sealed Enclosure

• Built with a reinforced structural steel frame and high-damping shock absorbers to isolate internal electrical coils from severe vibrations caused by cutterhead rock-crushing.

• High protection rating (IP55/IP65) prevents water ingress, slurry spray, and corrosive underground dust from degrading the electrical insulation.

3. Comprehensive Electrical Protection & Modular Safety

• Features multi-stage protection relays including short-circuit, overload, earth-leakage, over-temperature, and insulation monitoring to prevent underground fire hazards.

• Factory pre-assembled plug-and-play sockets facilitate quick cable extension as the tunneling machine advances deeper.

TBM Type Substation Procurement & Engineering FAQ

Q1: What is the standard delivery schedule and lead time for TBM substations?

A: Standard modular TBM substations or stocked transformer core components can be dispatched within 7 to 30 days. For fully customized TBM substations requiring precise spatial dimensioning to match your tunneling gantry drawings, the standard engineering, manufacturing, and testing period is 75 to 90 days.

Q2: What warranty protection and spare-parts support do you provide?

A: We offer a standard 1-year (12 months) comprehensive quality warranty starting from the delivery date. Given the rigorous demands of underground infrastructure, warranty coverage can be extended up to 5 years upon request, backed by rapid dispatch of critical spare parts and 24/7 technical support.

Q3: Are HENGFENGYOU ELECTRIC TBM substations certified for international underground tenders?

A: Yes. Our TBM substations are produced under ISO9001 quality standards and comply strictly with international codes including IEC 62271-200 and IEC 60076. The product line holds CE, UL, CSA, COC, and CCC test certifications, meeting stringent underground safety regulations globally.

Q4: How does a TBM substation differ from a standard ground-mounted compact substation?

A: Unlike traditional box-type substations, a TBM substation is specifically engineered for subterranean tunneling. It features an ultra-narrow elongated footprint to fit inside circular tunnel profiles, heavy-duty anti-vibration mountings to withstand cutterhead shock, and specialized IP55/IP65 sealing against underground water seepage and concrete dust.

Q5: Can the output voltage be customized for heavy industrial tunneling motors?

A: Yes. In addition to standard low-voltage outputs (such as 400V or 415V), we frequently customize TBM substations with specialized motor operating voltages such as 690V, 1140V, or 3300V (3.3kV) to directly feed high-power TBM cutterhead motors and slurry pumps without extra step-up units.

Q6: What measures prevent thermal overheating in confined underground tunnel spaces?

A: Heat dissipation is managed through heavy-duty dry-type cast resin transformers with high thermal endurance (Class H insulation) paired with IP55 temperature-controlled forced air blowers and heat exchangers. Built-in thermal sensors provide automated alarm and trip protection before critical temperature limits are reached.