Page last updated Jul 9, 2011 @ 12:25am

Configuration C

Configuration C is extremely versatile but more costly arrangement for providing power during a blackout.  It consists of locating a stationary automatic standby generator unit outside the building and permanently wiring to an automatic transfer switch.  This type of system must be installed by an electrician and may require pulling the electric meter.  The transfer switch is a double throw switch permanently wired to the building service entrance or sub-panel.

Operation is generally as follows.  When power is lost, after a brief delay, the standby generator automatically starts.  When it reaches rated speed and voltage, the automatic transfer switch connects the building electrical system to the running generator.  Various engine and generator parameters are monitored, along with the utility feed, and if all remain within specified ranges, the building will continue to be powered.  When the utility feed is restored, the automatic controls will switch the building back to the utility source after a preset time delay.  The generator is then automatically shutdown after a brief period of no-load operation for engine cool-down.

The automatic controls also are set up to regularly exercise the standby generator set by starting and running it every few weeks.

  1. Configuration C1 - all circuits backed by generator
  2. Configuration C2 - some circuits backed by generator

 


Configuration C1 is the most straight forward way of implementing a standby automatic generator scheme.  All the building circuits are backed by the generator.

Conf-c1.gif (15075 bytes)
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image above to enlarge

 

Standby Generator Ratings Matching Items Available for Purchase
Watts Amps @ 240V
single phase
Standby Generator Automatic Transfer Switch
(rate for larger of genset, panel or service)
11,000 46 click to go to standby generator catalog

100A:
RLC1-100, ZTX10MX60, VTS100A

200A:
RLC1-200, ZTX20MX60, VTS200A

click for complete automatic switch catalog

11,500 48
13,000 54
16,000 67
20,000 83
20,000 83
23,000 96
35,000 146 click to go to standby generator catalog

200A:
RLC1-200, ZTX20MX60, VTS200A

400A:
ZTX40MX60, ATC3C2-400
(can also use two 200A switches)

click for complete automatic switch catalog

45,000 187
Larger gensets and 3-phase models at other voltages are available.
If you do not see what you require click here to submit our quote request form.

 

Advantages of this configuration include:

Some disadvantages of this arrangement are:

* Non-essential electrical loads that operate from a control circuit sometimes can be automatically shutoff by means of an auxiliary contact on the transfer switch.  An example is a central air conditioning system that can be shutdown by wiring an auxiliary contact into the thermostat circuit.  When the transfer switch changes from the utility to the generator position the air conditioner will not run, thereby saving on the size and cost of the generator.  This auxiliary contact feature is usually available as an optional adder and must be specified when ordering the transfer switch.


Configuration C2 is a more economical way of implementing a standby automatic generator scheme.  Only the important building circuits are backed by the generator.  This is accomplished by feeding the vital circuits from a separate sub-panel.

Conf-c2.gif (14000 bytes)
Click on thumbnail
image above to enlarge

Standby Generator Ratings Matching Items Available for Purchase
Watts Amps @ 240V
single phase
Standby Generator Automatic Transfer Switch
(rate for larger of genset or sub-panel)
11,000 46 click to go to standby generator catalog

60A:
ZTX04MX60

100A:
RLC1-100, ZTX10MX60, VTS100A

200A:
RLC1-200, ZTX20MX60, VTS200A

click for complete automatic switch catalog

11,500 48
13,000 54
16,000 67
20,000 83
20,000 83
23,000 96
35,000 146 click to go to standby generator catalog

100A:
RLC1-100, ZTX10MX60, VTS100A

200A:
RLC1-200, ZTX20MX60, VTS200A

click for complete automatic switch catalog

45,000 187
Larger gensets and 3-phase models at other voltages are available.
If you do not see what you require click here to submit our quote request form.

Advantages of this configuration include:

Some disadvantages of this arrangement are:



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