BOMwiki the bill-of-materials encyclopedia
30,441,948 parts mapped · 192,925 items

This page is machine-generated and unverified (what this means). Treat details as provisional. If you know this hardware, weigh in or correct it directly with Edit.

Discussion History

On-Load Tap Changer

Assembly

OLTC on the line winding holding the DC voltage and managing reactive power as the converter firing angle moves. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

On-Load Tap Changer parts and their functions

8 top-level parts · 32 parts in total · full bill of materials below
On-Load Tap Changer parts diagram: 1 diverter switch, 2 tap selector, 3 OLTC motor drive unit, 4 transition resistor, 5 diverter oil compartment, 6 helical gear pair, 7 servo motor, 8 tap position indicator. 32 parts in 8 top-level items.
On-Load Tap Changer parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Diverter Switch 1× Diverter switch
2 Tap Selector 1× Tap selector
3 OLTC Motor Drive Unit 1× Motor drive mechanism
4 Transition Resistor 2× Transition resistor
5 Diverter Oil Compartment 1× Diverter oil compartment
6 Helical Gear Pair 1× Drive gear reduction
7 Servo Motor 4 parts 1× Tap-change drive motor
8 Tap Position Indicator 1× Tap position indicator

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for On-Load Tap Changer

8 top-level lines · 19 rows shown · 32 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Diverter Switch converter-transformer-oltc-diverter 1× 1 · part
2 Tap Selector converter-transformer-oltc-selector 1× 1 · part
3 OLTC Motor Drive Unit converter-transformer-oltc-drive 1× 1 · part
4 Transition Resistor converter-transformer-oltc-transition-resistor 2× 2 · part
5 Diverter Oil Compartment converter-transformer-oltc-oil-compartment 1× 1 · part
6 Helical Gear Pair gear-pair 1× 1 · part
7 Servo Motor 4 parts servo-motor 1× 1 24 assembly
7.1 Stator Assembly 3 parts stator-assembly 1× 1 3 assembly
7.1.1 Stator Core (laminations) stator-core 1× 1 · part
7.1.2 Copper Winding copper-winding 1× 1 · part
7.1.3 Slot Insulation stator-insulation 1× 1 · part
7.2 Rotor Assembly 4 parts rotor-assembly 1× 1 19 assembly
7.2.1 Rotor Shaft rotor-shaft 1× 1 · part
7.2.2 Rotor Core rotor-core 1× 1 · part
7.2.3 Neodymium Magnet neodymium-magnet 16× 16 · part
7.2.4 Ball Bearing ball-bearing 1× 1 · part
7.3 Encoder encoder 1× 1 · part
7.4 Motor Housing motor-housing 1× 1 · part
8 Tap Position Indicator converter-transformer-oltc-position-indicator 1× 1 · part

Where the on-load tap changer is used

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

Used in 1 assembly

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.com ↗ Singapore Electronics contract mfg 1,000 pcs 6–10 wks
dixoninfo.com ↗ Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
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