1161

The two units of JŽ 462 (HŽ 1161) series were derived from the JŽ 362 (HŽ 1061) series. The purpose of the project was to meet the needs for freight haul on mountain tracks electrified at 25 kV ~ 50 Hz, at relatively low costs. The very special motive for such a proposition was the re-electrification of Zagreb - Rijeka line from 3 kV DC to 25 kV ~ 50 Hz, which was currently in progress. The old 362 series had to be made use of, otherwise it should had been cashed. The main aim of the project was to preserve as many existing parts as possible, and if some should be replaced, the substitutes had to be equal to those of the 441 series. The modified locomotive should also comply with contemporary technical regulations. From the existing parts of the 362 series, the bogies were retained, the main frame was reinforced, the traction motors and the pantographs were modified. The parts equaled to the 441 series are: the main transformer with the current switch, direction switch, contactors, electrical amplifiers, air compressor and some parts of the pneumatic devices. The result of the reconstruction was the first six-axle diode locomotive at HŽ, carrying the 1161 serial number.

The first unit chosen for the overhaul was the damaged 362-106, which came to Zagreb Workshop on 1980/06/25. After the overhaul, it became the serial number 462-001. The second to be reconstructed was also damaged, no. 362-003, which had been waiting at the workshop yet since 1979/07/28. Once the transformation of the 462-001 was completed, by the beginning of 1988 started the functional testing. On the 23rd of March the first test drive was carried out at Locomotive Overhaul Department, and subsequently the unit was permitted into the traffic. The locomotive was tested afterwards too, on different rail sections and under different conditions, according to the prototype testing program.

Re-constructor	Zagreb Railway Works
Build	1988 (1161 001) - 1991 (1161 002)
No build (total)	2
No build (for HŽ)	2
In service	since 1988/03/10
Class id	1161
Class id (JŽ)	462
Numbering	1161 001 - 1161 002
No of units in HZ	2
In service (active)	2
Cab(s)	2
Cab comfort equipment	air condition
Pantograph(s)	2

Wheel arrangement	Bo'Bo'Bo'
Gauge	1435 mm
Power supply	25 kV 50 Hz
Tot weight	129 t
Max axle weight	22 t
Max power	3869 kW (5262 hp)
Tractive effort	350 kN
Hour straining force	283 kN
Permanent straining force	236 kN
Maximum train weight on the incline of 30 promiles	760 t
Max speed	120 km/h
Electric traction motor	»Ansaldo« 645 kW, 1800 V, 375 A
Motor of the main compressor	1 ZK 225 S4 (37 kW, 3 x 380 V, 73.5 A)
Traction motors ventilators	»Sever« type T112 M2 (4 kW, 3 x 380 V, 8.1 A)
Ventilator of the main converter	4 AZ 1325 A2 (5.5 kW, 3 x 380 V, 11.8 A)
Ventilator of the oil cooler	RK 4A ZA 132 M-4V 18E 215 (7.5 kW, 3 x 380 V, 15.2 A)
Compressor with the reducer	Westinghouse 243 VCR 1 300/min

Length incl. buffers	19440 mm
Height	4650 mm
Boggy center distance	5750 mm
Wheel diam.	1250 mm

The two units of the class 1161 represent heavy freight locomotives utilised on Zagreb Ranžirni kolodvor (Marchalling Yard) — Moravice line. They can be spotted at any station in-between.