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Electrical System

Assembly

High-voltage distribution, transformer and variable-frequency drives powering the machine. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Electrical System parts and their functions

19 top-level parts · 17,916 parts in total · full bill of materials below
Electrical System parts diagram: 1 step-down transformer, 2 variable-frequency drive, 3 HV switchgear, 4 wire bundle, 5 relay, 6 insulated wire (cut length), 7 crimp terminal, 8 connector, 9 power cable run, 10 junction box, 11 PLC I/O module, 12 process sensor, 13 tunnel light fitting, 14 CCTV camera, 15 gas detector, and 4 more. 17,916 parts in 19 top-level items.
Electrical System parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Step-Down Transformer 3 parts 1× Step-down transformer
2 Variable-Frequency Drive 4 parts 8× Variable-frequency drives
3 HV Switchgear 3 parts 1× HV switchgear
4 Wire Bundle 1× Main cabling
5 Relay 24× Control relays
6 Insulated Wire (cut length) 4200× One cut-to-length control or signal conductor, terminated at both ends.
7 Crimp Terminal 8400× two per wire
8 Connector 520× Mating plug-and-socket pair that joins two lengths of wiring or a cable to a board so a circuit can be assembled, serviced, and separated without soldering.
9 Power Cable Run 140× One run of HV or LV power cable between switchgear, drives and motors.
10 Junction Box 80× IP66 enclosure with terminals and glands for a group of circuits.
11 PLC I/O Module 64× Remote input/output module on the machine fieldbus.
12 Process Sensor 220× Pressure, displacement, temperature, flow, inclination or gas sensor feeding the PLC.
13 Tunnel Light Fitting 130× LED luminaire in the shield or on the gantry.
14 CCTV Camera 22× Camera monitoring the erector, conveyor or gantry.
15 Gas Detector 12× Methane, oxygen, CO or H2S detector head.
16 Emergency Stop Station 40× Mushroom-head stop button with lamp on a stanchion or panel.
17 Fuse & Breaker 260× Fuse or miniature circuit breaker protecting one circuit.
18 Cable Tie & Clamp 2400× Tie, saddle clamp or cleat securing cables, hoses and pipes to the structure.
19 Hex Bolt 400× High-strength hex bolt, M12 to M36, used throughout the shield, gantry and equipment mounts.

3D model

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Build & assembly graph

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Bill of materials for Electrical System

19 top-level lines · 29 rows shown · 17,916 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Step-Down Transformer 3 parts tbm-hv-transformer 1× 1 4 assembly
1.1 Copper Winding copper-winding 2× 2 · part
1.2 Transformer Core tbm-transformer-core 1× 1 · part
1.3 Transformer Tank tbm-transformer-tank 1× 1 · part
2 Variable-Frequency Drive 4 parts tbm-vfd 8× 8 123 assembly
2.1 Bare PCB pcb-bare 1× 8 · part
2.2 IGBT Power Stack tbm-igbt-stack 1× 8 · part
2.3 Microcontroller mcu 1× 8 · part
2.4 SMD Passive (R/C/L) smd-passives 120× 960 · part
3 HV Switchgear 3 parts tbm-switchgear 1× 1 15 assembly
3.1 Power Contactor tbm-contactor 6× 6 · part
3.2 Relay relay 8× 8 · part
3.3 Distribution Busbar tbm-busbar 1× 1 · part
4 Wire Bundle wire-bundle 1× 1 · part
5 Relay relay 24× 24 · part
6 Insulated Wire (cut length) tbm-wire 4200× 4,200 · part
7 Crimp Terminal tbm-crimp-terminal 8400× 8,400 · part
8 Connector connector 520× 520 · part
9 Power Cable Run tbm-power-cable 140× 140 · part
10 Junction Box tbm-junction-box 80× 80 · part
11 PLC I/O Module tbm-plc-io 64× 64 · part
12 Process Sensor tbm-sensor 220× 220 · part
13 Tunnel Light Fitting tbm-light 130× 130 · part
14 CCTV Camera tbm-camera 22× 22 · part
15 Gas Detector tbm-gas-detector 12× 12 · part
16 Emergency Stop Station tbm-emergency-stop 40× 40 · part
17 Fuse & Breaker tbm-fuse 260× 260 · part
18 Cable Tie & Clamp tbm-cable-tie 2400× 2,400 · part
19 Hex Bolt tbm-hex-bolt 400× 400 · part

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Where the electrical system is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Tunnel Boring Machine

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks