Model Voltage
FLA LRA Default
Min Max* Min Max FLA LRA
TTS400 575V 60 120 66 132 60 66
TTS700 380V 60 206 66 227 60 66
TTS700 400V 60 196 66 216 60 66
TTS700 460V 60 170 66 187 60 66
TTS700 575V 60 136 66 150 60 66
TTH375 380V 50 210 55 231 50 66
TTH375 400V 50 210 55 231 50 55
TTH375 460V 50 180 55 198 50 55
TTH375 575V 50 144 55 159 50 55
NOTE
Refer to the OEM Programming Manual to identify specific registers associated with the “3-Phase Over Current Alarm (FLA) and 3-Phase
Over Current Fault (LRA).”
6.4 Disconnects
An input disconnect (for example, a switch or circuit breaker) must be installed in the line before the compressor in
accordance with applicable local, national, and international safety regulations (for example, NEC/CEC). Size the
disconnect according to the full-load current.
• • • CAUTION • • •
The full-load current rating is based on the installation of a line reactor in the power line. Refer to the Spare Parts Selection Guide for
specifications. Failure to use a line reactor will result in poor power factor and higher full-load current.
Refer to Figure 20-9 Typical Electrical Connections for interconnection details.
6.5 Motor Insulation Class
All TTS/TGS/TTH/TGH Series compressors have a motor insulation Class H rating or better according to the NEMA/UL
Standard.
6.6 AC Input Line/Power Electronic Component Protection
Most safety regulations require that upstream branch protection be provided to protect input power wiring,
personnel, and switching equipment from damage in the event of an over-current condition or equipment failure.
Standard fuses and/or circuit breakers do not provide adequate protection for the compressor’s power electronics
components.
User-supplied, properly sized and selected fast-acting fuses must be installed according to the applicable local,
national, and international safety regulations. The fuses must be installed in the line before each compressor’s AC
input terminals. This excludes TGS230 and TTS300 compressors as they come with fast-acting fuses.
Use only properly rated fast-acting line fuses suitable for semiconductor protection, such as Littelfuse JLLS series,
Siemens Sitor 3NE1 series, or equivalent.
M-AP-001-EN Rev. S-9/8/2021 Page 47 of 136
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