ASCO Power Technologies Products Digital Binder
4000 SERIES Controls and Indicators
Group 5 Controller
Open and Delayed Transition Interfaces
Closed Transition Interface • Convenient One-Line Diagram - Provides a clear view of the position of the transfer switch. • Source Acceptability LEDs - Indicate the acceptability of each source, according to volt age, frequency, voltage imbalance, and phase sequence settings of the control panel. • Transfer Switch Position LEDs - Indicate which source is connected to the transfer switch. • Transfer Test - Allows testing of the operation of the transfer switch under a simulated failure of the normal source. Pressing for 15 seconds online and transfers the load. • Retransfer to Normal - Allows the user to bypass the programmed Retransfer-to-Normal delay upon return of the normal source during normal operation or a transfer test. • Lamp Test - Verifies the functionality of all LEDs on the User Interface. • User Controls Locked - Displays the status of the password protected controls. • Delayed Transition: LED Indicator signals when loads are disconnected from power sources. • Extended Parallel Time - Provides visual indication when the pre-set extended parallel time has been exceeded. The controls automatically open the emergency or normal main contacts. Separate contact also available to shunt trip to an external breaker. • Failure To Synchronize - Visually displays a failure to synchronize alarm if the time delay settings is exceeded, during closed transition transfer operation. • Transfer Switch Locked Out - Prevents transfer in either direction if the extended parallel time is exceeded. • Alarm Reset - Resets extended parallel and failure to synchronize alarms. • Closed Transition Bypass - Pushbutton allows transfer between sources in an open transition mode.
The 4000 SERIES Group 5 Controller is reliable and field-proven. It provides all of the voltage, frequency, control, timing, and diagnostic functions required for most emergency and standby power applications.
Basic Power Source
Synchronization and Paralleling
• Touch pad programming • Displays active timers • On-board diagnostics • Password protection
Connecting Closed Transition Transfer Switches to Utility Services
Load on Normal
• Voltage and frequency sensing • Status and control functions
In-phase Transfer Status
Waiting for In-Sync
-45 ° 0.02Hz
Group 5 Controller
Voltage and Frequency Settings
Start: 19h30min. ALL MON
Run Time:..............21h 15min
O.V. Trip.....110% 528V
Please note, the 4000 SERIES Electric Bypass-Isolation models use ASCO's Group H Controller. For more information please follow link to product details.
Electric Bypass-Isolation, Group H Controller
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