PROFILPELAJAR.COM

Specifications
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	45 in (1,143 mm)
Wheelbase	41 ft 0 in (12.5 m)
Length	Over headstocks:; 51 ft 2 in (15.60 m); Over coupler pulling faces:; 53 ft 11+1⁄4 in (16.44 m)
Width	9 ft 7 in (2,921 mm)
Height	Over stowed pantograph:; 14 ft 6 in (4,420 mm)
Axle load	18 long tons 14 cwt (41,900 lb or 19 t)
Loco weight	112 long tons 0 cwt (250,900 lb or 113.8 t)
Sandbox cap.	18 cu ft (0.51 m3)
Electric system/s	1,500 V DC Overhead
Current pickup(s)	2 pantographs
Traction motors	6 × Metropolitan-Vickers 272

Type and origin
Type and origin
Power type	Electric
Builder	Metropolitan-Vickers/Beyer, Peacock & Company, Bowesfield Works, Stockton-on-Tees, England
Serial number	786-825
Build date	1956–1958
Total produced	40

New South Wales 46 class
New South Wales 46 class
	4601 at Valley Heights Rail Museum in March 2015
Power type
Type and origin
Power type	Electric
Builder	Metropolitan-Vickers/Beyer, Peacock & Company, Bowesfield Works, Stockton-on-Tees, England
Serial number	786-825
Build date	1956–1958
Total produced	40
Configuration:;
Specifications
Configuration:;
• UIC	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Wheel diameter	45 in (1,143 mm)
Wheelbase	41 ft 0 in (12.5 m)
Length	Over headstocks:; 51 ft 2 in (15.60 m); Over coupler pulling faces:; 53 ft 11+1⁄4 in (16.44 m)
Width	9 ft 7 in (2,921 mm)
Height	Over stowed pantograph:; 14 ft 6 in (4,420 mm)
Axle load	18 long tons 14 cwt (41,900 lb or 19 t)
Loco weight	112 long tons 0 cwt (250,900 lb or 113.8 t)
Sandbox cap.	18 cu ft (0.51 m3)
Electric system/s	1,500 V DC Overhead
Current pickup(s)	2 pantographs
Traction motors	6 × Metropolitan-Vickers 272
Maximum speed
Performance figures
Maximum speed	70 mph (113 km/h)
Power output	Continuous:; 3,400 hp (2,540 kW); One hour:; 3,780 hp (2,820 kW)
Tractive effort	Continuous:; 36,700 lbf (163.25 kN); One hour:; 40,800 lbf (181.49 kN) at 34.5 mph (55.5 km/h)
Operators
Career
Operators	Department of Railways New South Wales; Public Transport Commission; State Rail Authority; FreightCorp
Number in class	40
Numbers	4601-4640
First run	25 June 1956
Last run	17 January 1996
Preserved	4601, 4602, 4615, 4627, 4638
Disposition	35 scrapped, 5 preserved

The New South Wales 46 class was a class of mainline electric locomotive built by Metropolitan-Vickers and its partner Beyer, Peacock & Company in England for the Department of Railways New South Wales. They later operated for the Public Transport Commission, State Rail Authority and FreightCorp with most remaining in service into the 1990s.

History

The locomotives were built at Bowesfield Works, Stockton-on-Tees, with electrical equipment supplied by Metropolitan-Vickers from its Trafford Park and Sheffield plants. Metropolitan-Vickers drew on experience gained from its earlier British Railways class 76 and 77 electric locomotives, which were used on the Woodhead Line in England and later in the Netherlands.

The locomotives were purchased as part of the electrification of the Main Western line over the Blue Mountains from Penrith to Bowenfels. The first was delivered in June 1956.^[1]^[2]

They hauled passenger services from Sydney Central and freight services from Rozelle and Enfield yards.^[3]^[4]

From January 1960 they also began to operate to Gosford following the electrification of the Main Northern line. This was later extended to Broadmeadow and Newcastle in June 1984.^[4]

From 1968 they hauled coal services from Glenlee Colliery on the Main South line and from January 1986 began to operate to Port Kembla following the Illawarra line being electrified.^[4]

From 1970 they hauled the Indian Pacific from Sydney Central to Lithgow. Because of the Commonwealth Railways stainless steel carriage stock having shorter than normal buffing plates, 4601-4604 had their buffers removed at one end to avoid buffer locking in 1970 with 4605-4608 similarly treated in 1974.^[5]^[6]

Demise

Their build quality and durability was such that 38 remained on the books in 1990. By April 1993, a number had been withdrawn and partially stripped with 31 in service or under repair.^[7] Following a decision by National Rail to use diesel locomotives on its services over the electrified network, the need for electric locomotives decreased.^[8] In December 1994, ten were sold for scrap.^[9] The remaining class members had been withdrawn by January 1996.^[10]

Accidents

The 46 class locomotives were involved in a number of serious incidents:

On 16 July 1965, a 44-vehicle freight train hauled by 4620 ran away for 4 miles (6.4 km), careering downhill at speeds of up to 95 miles per hour (153 km/h), before a spectacular derailment at Wentworth Falls in the Blue Mountains. Investigations revealed that whilst the air brake train pipe was connected from the locomotive to the train, the associated isolating cock was left closed. This rendered the train brakes inoperative.
On 16 January 1976, a freight train hauled by 4623 collided with the rear of a stationary double deck interurban electric multiple unit train at Glenbrook, killing one passenger. This accident was caused by a wrong-side signal failure. The automatic signal behind the EMU displayed "caution" when it should have been at "danger", thereby admitting the following goods train into the occupied signal section.
On 18 January 1977, 4620 was damaged in the Granville rail disaster, which claimed 83 lives. The locomotive was condemned and scrapped.^[11]

Preservation

Five locomotives (and one cab) were saved for preservation:

Preserved 46 class locomotives
Number	Owner	Location	Status	References/Notes
4601	Transport Heritage NSW	Valley Heights	Static Display	^[12]
4602	Dorrigo Steam Railway & Museum	Dorrigo	Stored	^[4]
4615	Sydney Electric Train Society	Lithgow	Stored	Moved from Junee in 2015 via Parkes^[13]^[14]
4617	Private owner	Junee	Stored	Cab only
4627	Sydney Electric Train Society	Lithgow	Transferred to Lithgow in July 2023 for static restoration	^[15]
4638	Transport Heritage NSW	Chullora Heritage Hub	Stored	^[16]

References

^ Australia's Most Powerful Locomotives for Work on Steep Mountain Grades Railway Transportation August 1956 pages 26-29, 40
^ The 46-Class Electric Locomotive Australian Railway Historical Society Bulletin issue 228 October 1956 pages 142-144
^ New South Wales Mixed-Traffic Locomotives Railway Gazette 14 February 1958 pages 192-196
^ ^a ^b ^c ^d Oberg, Leon (2010). Locomotives of Australia 1850s–2010 (5th ed.). Kenthurst: Rosenberg Publishing. p. 303. ISBN 9781921719011.
^ Bufferless 46 Class are Causing Problems Railway Digest March 1970 page 11
^ Bufferless 46 Class Railway Digest July 1974 page 15
^ 46 Class report Railway Digest May 1993 page 191
^ Night Ban on Short North Diesel Use Railway Digest September 1994 page 11
^ State Rail's Locomotive Auction Results Railway Digest January 1995 page 36
^ Remaining 46 Class Units go into Storage Railway Digest April 1996 page 9
^ Three Locomotives Condemned Railway Digest September 1977 page 217
^ Locomotive 4601 Valley Heights Rail Museum
^ NSW 46 Class Electric Locomotive 4615 Sydney Electric Train Society
^ 86 Class Electric Reactivated Motive Power issue 120 November 2018 page 7
^ NSW 46 Class Electric Locomotive 4627 Sydney Electric Train Society
^ Veteran electric finds new home as in traffic units face uncertain future Railway Digest July 1998 page 10