Asco Series 300 Operator's Manual
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Asco Series 300 Operator's Manual

Generator paralleling system
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Operator's
Manual
+Before reading please note the following
DANGER is used in this manual to warn of a
hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided,
could result in death or serious injury
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided,
could result in minor or moderate injury
Figure 1: (2)-Generator System
Florham Park, NJ 07932-1591 USA
Generator Paralleling System
:
All service to this equipment should be provided
only by a qualified service technician. No work
should be attempted without complete
documentation, including but not limited to
drawings, manuals, and interconnect
information.
For service and support, call 800-800-ASCO (800
800 2726) or email
Each ASCO Series 300 Power Control System
(PCS) contains a rating label to define the loads
.
and withstand/closing ratings. Refer to the label
on the unit for specific values.
For a non-redundant system where the load
current is more than one generator's full load
.
current and the generators are paralleled to
provide more power to the load, the main bus
current rating must be equal to or greater than the
sum of the two generator's full load amps.
If the application is a redundant system where the
load current is equal to or less than the full load
amps of one generator and the generators are
being paralleled for redundancy, the rating must
be equal to or greater than the full load current of
the biggest generator. In addition, the output
circuit breaker must have proper overcurrent
protection, equal to or less than the main bus

rating label.

Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury
and/or serious equipment damage.
Call 1 800 800-2726 (ASCO) for sales or service
Series 300
customercare@asco.com
Rating Label
381333-453

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Summary of Contents for Asco Series 300

  • Page 1 Do not exceed the values on the rating label. Exceeding the rating can cause personal injury and/or serious equipment damage. 381333-453 Figure 1: (2)-Generator System Call 1 800 800-2726 (ASCO) for sales or service Florham Park, NJ 07932-1591 USA...
  • Page 2 ASCO Series 300 Operator’s Manual TABLE OF CONTENTS ..............................ATING ABEL 300 P ................ERIES RODUCT UTOMATIC ONTROL YSTEM INSTALLATION ................................UPPORTING OUNDATION OUNTING ONNECTIONS ESTING OWER ONDUCTORS ONNECTING OWER ABLES ENERATOR IRCUIT REAKER ONTROL IRCUITS ..................ROUNDING IFFERENT ENERATOR...
  • Page 3 ASCO Series 300 ASCO Series 300 Product Automatic Control System The ASCO Series 300 PCS is an affordable and The ASCO Series 300 PCS is an automatic control feature-rich product for paralleling generators and system that may start and/or stop generators and controlling loads.
  • Page 4 All wiring must be made in accordance If the generator circuit breaker opens for any reason, with all applicable codes. the ASCO Series 300 contactors will open if AC control power is available from any remaining generator connected to the bus. If no AC power is available, the contactors must be opened manually.
  • Page 5 Operator’s Manual ASCO Series 300 Manual Maintenance Operation J-design (Figure 3a) and H-design (Figure 3b) The maintenance handle is stored in clips on the left side of the transfer mechanism assembly. Proper precautions must be taken, including G-design (Figure 3c)
  • Page 6 ASCO Series 300 Operator’s Manual Hubs shown with Generator 1 source contacts open and Generator 2 source contacts closed. UPPER SHAFT Generator 2 contacts Left side of the UP opens the contacts transfer switch DOWN closes the contacts Generator 2...
  • Page 7 ASCO Series 300 Operating Mode(s) The synchronizer will automatically adjust the This ASCO Series 300 PCS is designed to start up frequency of the on-coming generator to to 4 engine-generator sets upon receipt of a signal synchronize with the bus. When synchronism is...
  • Page 8 ASCO Series 300 Operator’s Manual Block Load Control annunciate the status of each Priority load block, indicating if it is shed or manually bypassed. Refer Each load (except priority 1) has an estimated KW to (Figure 8). If the operator inadvertently value and step time delay associated with it.
  • Page 9 Operator’s Manual ASCO Series 300 Features Bus Optimization the next load would exceed the de-rating value, the Next Load Exceeds Headroom light (on OIT) will Each load priority is determined by which load activate and load adding will pause. The system block wiring an ATS is connected to.
  • Page 10 ASCO Series 300 Operator’s Manual In the event of a bus Under-frequency, all Entering Load Demand Mode optimized load blocks will be shed as well as any After all generators sets have been paralleled to the additional unsupported blocks of load. Load...
  • Page 11 Operator’s Manual ASCO Series 300 Addition of Generator Sets to the Bus Test Facilities: Single Engine Test If the bus kW (system load), is equal to or greater Each engine can be started for test purposes by than the generator load demand pickup value for...

  • Page 12: Operator Controls

    ASCO Series 300 Operator’s Manual Operator Controls A. Master Control Station Figure 4 – Master Control Station B. Generator Control Station Figure 5 – Generator Control Station (Shown Typical for Gen 1 & 2) Page 12 ASCO Power Technologies 381333-453...
  • Page 13 Operator’s Manual ASCO Series 300 Generator Control Station (Figure 5) TEST OFF-LINE - With the switch placed in this position, the Engine Generator set shall An Engine/Generator can be manually started and immediately start and run. In this mode, the...

  • Page 14: Emergency Stop

    ASCO Series 300 Operator’s Manual Engine Malfunction Indication Priority # Load Shed Bypass/Reset (via OIT) The priority load shed bypass/reset button is used Upon initiation of a malfunction, the generator set to add or shed load that is in addition to the load will be removed from the bus and shutdown.
  • Page 15 Operator’s Manual ASCO Series 300 Operator Interface Terminal (OIT) An OIT operator interface terminal is accessible via the master control section door. This operator interface allows for priority settings, time delay settings and system monitoring features. User settings may be modified by selecting the MENU button on any screen.
  • Page 16 ASCO Series 300 Operator’s Manual Operator Interface Terminal (OIT) A description of operator screens appears below Settings and configuration screens, reserved for technicians, are not described. Figure 9 – System Control The status indicators and controls for the system control station include control for the load demand Figure 8 –...
  • Page 17 Operator’s Manual ASCO Series 300 Operator Interface Terminal (OIT) Figure 12 – Manual Paralleling Figure 11 – Bus Optimization The manual paralleling screen includes a graphic The bus optimization screen shows details of the synchroscope and controls to either manually or...

  • Page 18: Factory Default Settings

    ASCO Series 300 Operator’s Manual Factory Default Settings The following is a table of all the parameter settings, which can be changed via the operator interface terminal (OIT). Factory Label Description Range Settings Load Demand Load Demand Feature Enabled Enabled/Disabled...
  • Page 19 Operator’s Manual ASCO Series 300 Factory Default Settings (continued) Factory Label Description Range Settings Priority 4 Priority 4 Block Typical kW Rating (1 - 1000) Priority 5 Priority 5 Block Typical kW Rating (1 - 1000) Priority 6 Priority 6 Block Typical kW Rating...
  • Page 20 ASCO Series 300 Operator’s Manual INDEX ASCO Series 300 product, 3 grounding different generator ASI is ASCO Services Inc. DC controls, 4 Priority # load shed 800-800-2726(ASCO) generator circuit breaker bypass/reset, 14 customercare@asco.com, control circuits, 4 addition of generator sets to...

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