Glycol pumps for the cooling of inverters in the railway industry
Lightweight – Durable – Powerful – LC
In today's railway industry, ever more powerful electric motors are used that are operated energy-efficiently by using control systems. The inverter for regulating frequency and voltage is one of those control elements. Converting the single-phase alternating current from a power source to the three-phase alternating current required by the motor produces a large amount of heat that must be dissipated. The cooling medium used is either air for applications with low power consumption or water-glycol mixtures for applications with high power consumption and in confined spaces. As the trend is towards high-performance motors in high-speed trains, but also underground trains and trams, cooling water systems are increasingly being used.
Main requirements for refrigeration units / refrigerant pumps in the railway industry
- Space-saving
- Durable
- Lightweight
Our solution: LC pump – lightweight, durable, powerful
When compact design and long service life are the first priority, canned motors are mainly used. Therefore, canned motor pumps are mainly used for cooling converters in the railway industry.
Key benefits of the canned motor pump LC series specially designed for the railway industry according to the CLC/TS 50537-3 standard:
| Weight | Approx. –20 % weight compared to conventional |
| Design | Extremely compact |
| Price | Attractive prices and low life-cycle costs |
| Durability | Mean Time Between Failures (MTBF) > 130,000 h |
| Flexibility | Fast development to meet individual customer requirements |
| Safety | Hermetically sealed system without media loss |
| Mounting | Horizontal and vertical mounting as well as 90° versions |
| Tests | Among other things, vibration tests according to EN 61373 |
| Protection | Highest corrosion and fire protection according to EN 45545-2 |
LC pump – technical data
| Delivery rate (50 Hz) | up to 19.2 m3/h (up to 320 l/min) |
| Pumping head (50 Hz) | up to 38 m |
| Motor output | 1.0 kW to 3.0 kW |
| Nominal pressure | 10 bar |
| Operating temperature | –40 °C to +80 °C |
| Weight | < 42 kg |
| Noise level (50 Hz / 60 Hz) | < 68 dB |
| Type of protection (motor) | IP 66 |
| Corrosion protection (paintwork) | up to C5 |
| Fire protection (paintwork) | R1 and R7 for HL1, HL2 and HL3 |