Vacon NX User Manual page 174

vacon • 172
Table 65. Technical specification for Vacon NXB liquid-cooled brake chopper unit
Liquid cooling
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Allowed cooling agents
Volume
Temperature of cooling
agent
Cooling agent flow rates See Table 15.
System max. working
pressure
System max. peak
pressure
Pressure loss (at nominal
flow)
BRAKE CHOPPER UNIT (NXB)
Drinking water (see specification on page 46)
Water-glycol mixture
See derating specifications, Chapter 5.3.
See page 51.
0...35 °C (Ibr)(input); 35...55 ºC: derating required,
see Chapter 5.3 .
Max. temperature rise during circulation 5 °C
No condensation allowed. See Chapter 5.2.1.
6 bar
30 bar
Varies according to size. See Table 17 .