Introduction
MotorSeT Medium Voltage (MV) Across-the-Line (ATL) Motor Controller features a standard base model configuration with a direct-to-supply-line motor starter for three-phase induction motors utilizing vacuum contactors. It also comes in a dual configuration that supplies two motor starters, two feeders or a motor starter and a feeder which minimizes the cabinet footprint for applications where space is a consideration. When combined with other electrical distribution and control products from Schneider Electric, the MotorSeT motor controller provides a system-wide solution.
A typical MotorSeT MV ATL Motor Controller assembly is shown in the figure Typical Views — Standard ATL Motor Controller. For views of the compact ATL and dual ATL motor controllers, see Compact ATL — Typical Views Diagram and Dual ATL — Typical Views Diagram.
Typical Views — Standard ATL Motor Controller
Legend — Typical Views of Standard ATL Motor Controller Diagram
| A |
Lifting eyebolts (removable) |
| B |
Viewing window |
| C |
Protective relay or MotorSeT Advanced Control Keypad |
| D |
Start/Stop pushbuttons |
| E |
Low voltage section |
| F |
Medium voltage section |
| G |
Ground bar for disconnecting switch |
| H |
Disconnector switch handle |
| I |
Current transformers (CT) |
| J |
Ground fault CT (optional) |
| K |
Control power transformers |
| L |
Disconnector shield |
| M |
Disconnector switch |
| N |
Power fuses |
| O |
Wireway |
| P |
Vacuum contactor |
| Q |
Motor landing pads |
| R |
Ground bus |
This instruction bulletin provides installation, operation, maintenance, and troubleshooting procedures for MotorSeT ATL motor controllers. It also contains ratings, a list of replacement parts, and information about optional features.
This bulletin does not cover all of the applications for the equipment or provide information on every possible contingency concerning installation, programming, operation, or maintenance specific to the equipment. For customized motor starters, refer to the starter specific drawings and parts list that comes with the customized starter. Manufacturer documentation or instruction sheets for optional equipment are supplied separately from this bulletin.
Carefully read this instruction bulletin, safety statements, and all product labels before installation and operation.
MotorSeT ATL starter is one of the latest innovations in Schneider Electric MV motor control equipment. The one-high design 450 A base unit is compact, measuring 20.0 in. (500 mm) wide and 30.0 in. (762 mm) deep. Its compact size allows two one-high units to occupy the same or less floor space than typical 450 A two-high equipment. The equipment is front accessible for installation and maintenance.
All MotorSeT starters available in either a lineup or stand-alone configuration.