Application:

Applicable to DF type diesel locomotive through the water resistance test can set a number of electromechanical parameters such as power generation, diesel engine speed, pipe temperature, etc., so that the locomotive technical state meets the requirements of the regulations.

Equipment composition

It consists of a water resistance system (composed of a water resistance box, positive and negative electrode plates, columns, beams, lifting mechanisms, cable terminals, etc.), an electrical control system, an instrument display system, and a computer detection system.

Main technical performance and requirements:

Meet the technical requirements of TB/T2078-2006 "Water-resistance load test equipment for electric drive diesel locomotives".
The positive and negative electrode plates are in split form and are made of carbon steel. The movable plate group is suspended on the beam by wire rope, and the lifting mechanism is raised or lowered at a constant speed of 0.486 m/min, so that the plate immersion depth changes slowly. Easy to adjust current.
Effectively control the rise and fall of the plates.
The accuracy level is 1 to 2 higher than that of the locomotive. When testing, the parameters of the tested parameters are accurate and reliable.
Computer detection computing system, VC++ programming, software to fully utilize the graphical data table function, intuitive image, running on the WIN platform.
The detection interface includes: full process map, suspension point data, constant power curve, parameter chart, excitation data, tube temperature, etc., with network transmission function.
It has locomotive start, locomotive loading and diesel engine speed control. It is the simulated traction condition of the diesel locomotive in the non-walking state. The locomotive after the final assembly or overhaul is adjusted and adjusted to make it play its proper power and characteristics and meet the technical regulations.

Main technical parameters:

Performance parameters:
Maximum test current: 8000A DC

Maximum test voltage: 1000V DC
Maximum test power: 4500 kW
Synchronous main generator excitation current 0~300 A
Synchronous main generator excitation voltage: 0 ~ 150 V
Speed generator excitation current: 0~1 A
Rated speed of diesel engine: 0~1000 r/min
Speed limit: 1120~1140 r/min
Diesel engine fuel consumption: 100 ~ 400 L / kW · h

Test range of the test bench:
DC: 0-1000V Accuracy: 0.2
Measurement: main rectifier cabinet output voltage
DC: 0-7500A Accuracy: 0.2 with shunt 75mV/7500A/0.5
Measurement: main rectifier cabinet output current
DC: 0-150.0V Accuracy: 0.2
Measurement: excitation rectifier cabinet output voltage
DC: 0-300A Accuracy: 0.2 shunt 75mV/300A/0.5
Measurement: excitation rectifier cabinet output current
DC: 0-10.00A Accuracy: 0.2 with shunt 75mV/10.00A/0.5
Measurement: exciter excitation current
Tachometer: 0-1000r/min Accuracy: 0.5
Measurement: diesel engine speed
DC: 0-1.000A Accuracy: 0.2
Measurement: tachometer excitation current
Temperature gauge: 0-800 °C Accuracy: 0.2 with thermocouple WRN-2 1.5%
Measurement: Total exhaust pipe temperature
Hardware parameters:
External power supply: AC4000V 50Hz 3kVA 3N PE
Water resistance tank water filling capacity: 17 m3
Water resistance box footprint (length × width × height): 4.7 × 2.4 × 5.0 m3
Control cabinet dimensions (width × height × depth): 1800 × 1440 × 940 mm3
Electrode plate lifting speed: 0.486 m/min
Maximum stroke of the electrode plate: 2.58 m
Positive and negative plate spacing: 0.14 m