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CTV-PRB004-EN
Introduction
This document explains key electrical concepts and starter product information relating toTrane
®
water chillers. Topics include voltage classes, motors, motor protection, starter types, variable-
frequency drives, wire sizing, power factor correction, and electrical term definitions.
Information in this document changes frequently. To make sure you are viewing the most recent
version, be sure to download the latest copy available on e-Library.
Dimensional data
Job specific submittals are always the best source of dimensional data. General starter dimensions
are shown with the descriptions of each starter type in this document.
Wiring information
The best source for additional information is the Installation, Operation, and Maintenance manual
shipped with the chiller. Field connection diagrams are also available on the website.
All unit-mounted starters are designed for top-entry line power only. Remote starters are typically
designed for top-entry line power and a bottom exit for load wires. The medium-voltage starter
submittals show conduit space for alternate wiring options. Additional wiring options may be
available.
For your convenience, power wire sizing charts for various voltages and conduit combinations are
provided.
Fuse and circuit breaker sizing
Proper sizing of fuses and circuit breakers upstream of the starter is the responsibility of the
customer or the electrical engineer. Disconnects and circuit breakers are options that can be
installed within theTrane
®
starters. WhatTrane would install may not necessarily satisfy UL, NEC,
or local code requirements for installation of overcurrent devices.
Important:
Trane, in presenting electrical information and system design and application
concepts, assumes no responsibility for the performance or desirability of any
resulting system design. Design of the HVAC and related electrical system is the
prerogative and responsibility of the engineering professional.Trane has a policy of
continuous product and product information improvement and reserves the right to
change design and specifications without notice. Consult the chiller submittal for the
most up-to-date information as applied to the specific chiller under consideration.
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