Electrical Portion Of Winder:
• 2200KW AC Electrical Motor
• Electrical Inverter and Converter TM Drive Panels
• Electrical control and safety panels

1. LTDB 1 – 4
2. UPS
3. Left Escort Panel
4. Right Escort Panel
5. Safety Panel
6. Control Panel
7. Safewind Panel
8. Headgear Rope Monitor Box
9. Transformer Monitoring Box
10. Drivers Instrument Desk
11. IMEFY Cast Resin Transformer
12. ACTOM MV Switchgear

Description:
4.55m x 1.83m (16ft x 6ft) Barlows Double Drum winder, mechanically and electrically upgraded by Winder Controls, driven by a 2200kW, 34.5rpm TMEIC AC Synchronous Induction Motor with TMdrive 70 IEGT vector controlled 3 Level inverter.

Full Winder Duty cycle calculations (chapter 1 marketing pack) (a) Available upon request
Full operating and maintenance manual (electrical only) (b) Available upon request
Full set of drawings (c) Available upon request
Full software code for operational rock double winder (d) Available upon request

Mechanical Portion Of Winder:
• 4.55m x 1.83m (16ft x 6ft) Barlows Double Drum winder Electrical Inverter and Converter TM Drive Panels

1. Drum Bushes
2. Coiling Sleeves
3. Drum Barrels
4. Drum Cheeks
5. Male Clutches
6. Tie Rods
7. Bearings
8. Drum Shaft
9. Brake Power & Alternative Brake System
10. Brake Pins
11. Brake Rigging
12. Triangular Levers / Brake Posts
13. Encoder Assembly – Dimensional Reports
14. Encoder Drive Assembly
15. Stub Shaft
16. Mounting Base
17. Clutch Interlock
18. Hydraulic Tensioner
19. Winder Marketing Pack

Background:
De Beers is in possession of a 16ft double drum, direct drive AC Winder which is currently for sale. Below a brief history on the winder.

The 4.55m Diameter x 1.83 m width Double Drum Winder mechanicals manufactured by Barlows and installed at the South Deep Ventilation Shaft in 1995. At first it serviced the 2960m deep shaft, as a Kibble Winder during the sinking phase and then from March 2011 as a Man/Material winder.

The Barlows mechanical drum design is based on a heavy duty bolted construction with each drum installed with a three-part clutch system. The drum barrel consists of two halves bolted together having a single stiffener ring in the middle of the barrel. The barrel is connected to the drum cheeks with an axial bolted connection. The 660 mm nominal diameter drum shaft was designed to accommodate a direct drive through shaft motor with an outboard bearing support.

The winder was originally fitted with a 3400kW, 58.4rpm Toshiba DC Motor fitted with a Ward Leonard control system supplied by Actom. The winder operated at South Deep Vent shaft as a Kibble winder with the following design parameters;

• Type – Double Drum
• Length of wind – 2960m
• Speed – 8 m/s
• Payload – 6000 kg
• Men – 1350 kg
• Material – 2000 kg
• Rope – 45 mm
• Motor power – 3400 kW (DC)

This Winder mechanical components were fully refurbished by Winder Controls South Africa. Full compliance to Anglo American was a requirement. The total electrical portion including the motor has been replaced with a 2200kW, 34.5rpm TMEIC AC Synchronous Induction Motor controlled by a TMdrive-70 IEGT vector controlled 3 Level inverter.

The fixed shoe brake rigging was retained for the Venetia duty; however, the brake control was replaced with a current era ESCORT Semi Closed Loop control.

The Winder is designed to be fully automatic handling a payload of 18t and has the following major specifications.

Video: https://youtu.be/Es2rBqN62rg