Purpose Of Derating; Derating For Ambient Temperature; Automatic Adaptations To Ensure Performance - Trane TR200 Instruction Manual

Special Conditions

Purpose of Derating

Derating must be taken into account when using the frequency converter at low air pressure (high altitudes), at
low speeds, with long motor cables, cables with a large cross section or at high ambient temperature. The
required action is described in this section.

Derating for Ambient Temperature

90% frequency converter output current can be maintained up to max. 50 °C ambient temperature.
With a typical full load current of EFF 2 motors, full output shaft power can be maintained up to 50 °C.
For more specific data and/or derating information for other motors or conditions, please contact Trane.
The output current of frequency converters with build-in fuses installed in an environment with maximum am-
bient temperatures up to 50°C must be derated according to the table below.
Mains Voltage
Motor power [hp]

Automatic Adaptations to Ensure Performance

The frequency converter constantly checks for critical levels of internal temperature, load current, high voltage
on the intermediate circuit and low motor speeds. As a response to a critical level, the frequency converter can
adjust the switching frequency and / or change the switching pattern in order to ensure the performance of the
frequency converter. The capability to automatically reduce the output current extends the acceptable operating
conditions even further.
BAS-SVX19C-EN
Maximum current at 50°C
208-230V
1.0 4.1
1.5 5.9
2.0 6.8
3.0 9.5
5.0 15.0
7.5 22.2
10.0 28.0
15.0 41.6
20.0 55.0
380-440V 440-480V
2.2
2.7
3.7
5.0
9.0
11.7
14.4 13.1
21.6 18.9
- 25.0
Specifications
525-600V
1.9 1.5
2.7 2.2
3.1 2.4
4.3 3.5
7.4
9.9
8-11