The Vigilant Load Center transfer switch (VLC100 Series) is specifically designed with all required sensing circuitry provided. The sensing circuitry allows automatic transfer of an electrical load to a stand-by power supply in the event of a drop or loss of voltage of any or all phases of the normal power supply. Upon the restoration of the normal supply, the electrical load will be automatically re-transferred to the normal power supply. Optional engine controls may be added to allow the safe operation of the generator including proper engine failure shutdown.

The Vigilant Load Center was designed to be flexible in meeting the needs of the individual homeowner. As part of this flexibility, Load Centers may be purchased with or without breakers. When purchasing the Load Center with breakers the standard configuration includes: five 15A single pole, three 20A single pole, and one 20A double pole circuit breakers allowing optimal connections for home circuits. All Vigilant Transfer switch mechanisms incorporate a double throw action switching device for automatic transferring. The Vigilant mechanism is a contactor operated device controlled by a set of normal and emergency solenoids. Manual operation is also provided for manual transfer of the power sources if necessary.

The Vigilant Load Center series transfer switch, in combination with DynaGen’s VTSC100 timing module, will allow for the automatic transfer of an electrical load to a stand-by power supply in the event of an over/under voltage or frequency condition on any or all phases of the normal power supply. In the event of an over/under voltage or frequency condition of utility power, the onboard VTSC100 sensing circuitry will begin the initiation of the transfer process. Upon initial sensing of a loss of utility power the Vigilant series transfer switch is specifically designed to allow an engine start time delay period (TDES) to expire before starting the generator. This engine start time delay is user adjustable from the VTSC100 preventing unnecessary engine starts from a temporary loss of utility. In the event the utility source is not restored to acceptable values after the engine start time delay has expired the remote start contacts will close sending a signal to the generator’s automatic start controller.

When the VTSC100 senses that the generator has started, and within acceptable limits, the transfer switch will wait until the normal to emergency time delay (TDNE) has expired before switching to the emergency position. This delay allows the generator to stabilize before any load is transferred. All connected loads are then transferred to the emergency power source.

While the transfer switch is in the emergency position, the VTSC100 will be constantly monitoring the utility source voltage and frequency status. Once the utility source is restored to acceptable limits, the Transfer switch will wait until the emergency to normal time delay (TDEN) has expired before switching to the normal position. This emergency to normal time delay is user adjustable from the VTSC100 preventing unnecessary transferring from a temporary restore of the utility source. If the utility source remains stable after the emergency to normal time delay expires the transfer switch will transfer to the normal position. All connected loads are transferred to the normal power source.

When connected loads are transferred back to the normal power source an engine cooldown period (TDEC) will be initiated allowing the generator to run in a no load condition. This engine cooldown time delay is user adjustable from the VTSC100 allowing the generator to continue running for a specific period after the normal utility is restored.

All Vigilant 2000 series transfer switches include an external engine exerciser and LED annunciation. The engine exerciser is easily adjustable from outside the transfer switch enclosure. External LED indication is included on all Vigilant 2000 series switches allowing visual controller status.

The user may set the engine exerciser to simulate a utility power failure and test the functionality of the transfer switch system. The exact day and time may be specified for testing. External LED indication is available for normal available, emergency available, transferred to normal, transferred to emergency and exercise/test run illumination is explained in detail in the VTSC100 user manual.

The exercise time clock is used to set specific times to test the transfer switch operation. The exerciser is protected using a 20A fuse. The RESET BUTTON initializes the time clock erasing any previous program.

The functions of the exerciser time clock are:

1. Set current time and date
2. Set program timing
3. Review your program
4. On/Auto/Off mode

Use this chart to help determine the correct model number for your application:

Operating Temperature: – 20°C to +70°C (– 4°F to +158°F)
Operating Humidity: 0 – 95% Relative, Non-Condensing

* Please consult factory for specific protective device specifications and ratings.
  UL1008 – Optional Standby Systems

Download Dynagen Load Center / Transfer Switch Literature Here:

	Load Center Transfer Switch Sales Bulletin (pdf)
	VLC100 Installation & User Manual (pdf)