Overload Class Trip Curves - Toshiba TE-18-BP Quick Start Up Manual

Basic Installation and Operation Guide
Overload Class Trip Curve Chart
Figure 9: TE Series Overload Trip Curves
Overload Protection During Bypass
When a Bypass Contactor is used to shunt power around the SCRs in the TE Series (as in the TE...-BP
version), overload protection is maintained as long as the TE Series is directly controlling the contactor.
No additional Overload Relay is necessary for normal operation.
Special Consideration for Across-the-Line (Direct-on-Line) Contactors
When the Bypass Contactor on a TE...-BP Series has been selected to be used for Across-the-Line
restart, supplemental overload protection must be added. For this application, refer to the External
Overload Relay Applications supplement and wiring diagram in Appendix 5 and section 4.2.6.a of the full
Installation, Operation and Maintenance Manual for detailed instructions.
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TE Series Digital Solid State Soft Starters 18 – 1250A