Specifications

February 2007
16-30
For more information visit: www.eaton.com CA08101001E
Transfer Switches
16
Transfer Switch Equipment
ATC-100 Controller
ATC-100 Controller
ATC-100 Controller
Product Description
The ATC-100 Controller is a compre-
hensive, multi-function, microprocessor-
based ATS controller. It is a compact,
self-contained, panel mounted device
designed to replace traditional relay
and solid-state logic panels.
Application Description
The ATC-100 Controller provides an
unmatched degree of programmed
flexibility to address the needs of any
system. It operates from all system
voltages between 120 and 480 Vac,
single-phase and 3-phase, at 50 or 60 Hz.
In addition, a period of no control power
operation is provided. The ATC-100
Controller monitors the condition of
the 3-phase line-to-line voltage and
frequency of both the Utility and
Generator power sources. It can also
be set up for single-phase operation.
The ATC-100 Controller provides the
necessary intelligence to ensure that
the transfer switch operates properly
through a series of programmed
sensing and timing functions.
Features, Benefits
and Functions
Standard Features
■ Auxiliary relay contacts:
❑ Source 1 Present 2NO & 2NC
❑ Source 2 Present 2NO & 2NC
■ Switch position indication contacts:
❑ Source 1 Position 1NO & 1NC
❑ Source 2 Position 1NO & 1NC
■ Source 1 & Source 2 sensing:
❑ Undervoltage/under frequency
❑ Overvoltage/over frequency
❑ 3-phase rotation protection
❑ 3-phase voltage unbalance/loss
■ Pre-transfer signal contacts 1NO/
1NC.
■ Go to Emergency (Source 2).
■ Seven field programmable time
delays.
■ LCD-based display for program-
ming, system diagnostic and Help
message display.
■ Mimic diagram with source avail-
able and connected LED indication.
■ Time-stamped history log.
■ System test pushbutton.
■ Programmable plant exerciser —
OFF, daily, 7, 14, 28-day interval
selectable run time 0 – 600 minutes
no load/load with fail-safe.
■ Safe manual operation under full
load with permanently affixed
operating handle.
■ Monitor Utility and Generator power
source voltages and Generator
power source frequency.
■ Provide undervoltage protection
of the Utility and Generator power
sources.
■ Provide underfrequency and
overfrequency protection of the
and Generator power source.
■ Permit easy customer set-up.
■ Permit system testing.
■ Provide faceplate source status
indications.
Table 16-35. Controller Settings
Description Range Factory
Default
Fixed/
Jumper
Time Delay Engine Start 3 Seconds 3 Seconds Fixed Setting
Time Delay Normal to Emergency 2 or 15 Seconds 15 Seconds Jumper-Selectable
Time Delay Emergency to Normal 5 Minutes 5 Minutes Fixed Setting
Time Delay Engine Cool-off 5 Minutes 5 Minutes Fixed Setting
Time Delay Emergency Fail Timer 6 Seconds 6 Seconds Fixed Setting
Nominal Frequency 50 or 60 Hz As Ordered Jumper-Selectable
Nominal Voltage 120, 208, 220, 230,
240, 380, 415 or
480 Volts
As Ordered Jumper-Selectable
Three-Phase or Single-Phase 1 or 3 As Ordered Jumper-Selectable
Utility Undervoltage Dropout 80% of Nominal
Voltage
80% of Nominal
Voltage
Fixed Setting
Generator Undervoltage Dropout 80% of Nominal
Voltage
80% of Nominal
Voltage
Fixed Setting
Utility Undervoltage Pickup 90% of Nominal
Voltage
90% of Nominal
Voltage
Fixed Setting
Generator Undervoltage Pickup 90% of Nominal
Voltage
90% of Nominal
Voltage
Fixed Setting
Generator Underfrequency Dropout 90% of Nominal
Frequency
90% of Nominal
Frequency
Fixed Setting
Generator Underfrequency Pickup 95% of Nominal
Frequency
95% of Nominal
Frequency
Fixed Setting
Generator Overfrequency Dropout Off or 115% of
Nominal Frequency
Off Jumper-Selectable
Generator Overfrequency Pickup Off or 110% of
Nominal Frequency
Off Jumper-Selectable
Generator Test On/Off Off, No Load Transfer,
Load Transfer
Off Jumper-Selectable
Generator Test Interval 7-Day, 14-day,
or 28-day
7-Day Jumper-Selectable
Engine Run Test Time 15 Minutes 15 Minutes Fixed Setting