DCA-45SSIU3 (60 Hz) — GENERAL INFORMATION

DCA-45SSIU3Whisperwatt™ Generator Familiarization

The MQ Power Model DCA-45SSIU3 is a 36 kW, 60 Hz generator (Figure 5) that is designed as a high quality portable (requires a trailer for transport) power source for telecom sites, lighting facilities, power tools, submersible pumps and other industrial and construction machinery.

Engine Operating Panel

The “Engine Operating Panel” is provided with the following:

Tachometer

Water Temperature Gauge

Water Temperature Alarm Lamp

Oil Pressure Gauge

Oil Pressure Alarm Lamp

Charging Ammeter Gauge

Fuel Level Gauge

Pre-heat Lamp

Panel Light/Panel Light Switch

Ignition Switch

Fuel Filter Water Level Alarm Lamp

Generator Control Panel

The “Generator Control Panel” is provided with the following:

Frequency Meter (Hz)

AC Ammeter (Amps)

AC Voltmeter (Volts)

Ammeter Change-Over Switch

Voltmeter Change-Over Switch

Voltage Regulator

3-Pole, 110 amp Main Circuit Breaker

“Control Box” (located behind the Gen. Control Panel)

Automatic Voltage Regulator

Current Transformer

Over-Current Relay

Voltage Rectifier

Starter Relay

Voltage Selector Switch

Output Terminal Panel

The “Output Terminal Panel” is provided with the following:

Three 120/240V output receptacles (CS-6369), 50A

Three auxiliary circuit breakers, 50A

Two 120V output receptacles (GFCI), 20A

Two GFCI circuit breakers, 20A

Five output terminal lugs (3Ø power)

Battery Charger (Optional)

Water Heater (Optional)

Open Delta Excitation System

The DCA-45SSIU3 (60 Hz)generator is equipped with the state of the art "Open-Delta" excitation system. The open delta system consist of an electrically independent winding wound among stationary windings of the AC output section.

There are four connections of the open delta A, B, C and D. During steady state loads, the power from the voltage regulator is supplied from the parallel connections of A to B, A to D, and C to D. These three phases of the voltage input to the voltage regulator are then rectified and are the excitation current for the exciter section.

When a heavy load, such as a motor starting or a short circuit occurs, the automatic voltage regulator (AVR) switches the configuration of the open delta to the series connection of B to C.This has the effect of adding the voltages of each phase to provide higher excitation to the exciter section and thus better voltage response during the application of heavy loads.

The connections of the AVR to the AC output windings are for sensing only. No power is required from these windings.

The open-delta design provides virtually unlimited excitation current, offering maximum motor starting capabilities. The excitation does not have a "fixed ceiling" and responds according the demands of the required load.

PAGE 18 — DCA-45SSIU3 (60 HZ) — OPERATION AND PARTS MANUAL — REV. #0 (11/30/05)

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Multiquip DCA-45SSIU3 60 Hz General Information, Engine Operating Panel, Generator Control Panel, Output Terminal Panel

DCA-45SSIU3 specifications

The Multiquip DCA-45SSIU3 is a robust and versatile diesel generator designed to provide reliable power for various applications, making it an essential piece of equipment for construction sites, events, and emergency backup. This generator is renowned for its efficiency, durability, and user-friendly design, catering to a wide range of power needs while ensuring optimal performance.

One of the standout features of the DCA-45SSIU3 is its powerful 45 kVA output. This generator is powered by a reliable and fuel-efficient Yanmar diesel engine, which not only delivers consistent power but also ensures lower emissions, making it an environmentally friendly choice for power generation. With its high fuel efficiency, operators can expect longer run times between refuels, reducing downtime and increasing productivity on the job site.

The DCA-45SSIU3 boasts a compact and mobile design, equipped with a durable steel frame and a weather-resistant enclosure. This ensures that the generator can withstand harsh outdoor conditions while providing easy access for maintenance and operation. Its built-in forklift channels and lifting eyes enhance its portability, allowing for simple relocation to different job sites.

This generator is equipped with advanced technologies that enhance its performance and safety. The intuitive control panel features easy-to-read gauges and indicators for monitoring performance. Users can quickly access essential functions, including start/stop controls and circuit breaker protections, which safeguard the generator from overloads. Additionally, its automatic voltage regulation delivers stable power, ensuring that sensitive electronic equipment runs smoothly without risk of damage.

The DCA-45SSIU3 also includes a fuel tank designed for extended operation, with a capacity that provides significant hours of runtime. This feature is complemented by an efficient cooling system that maintains optimal engine temperatures, ensuring reliability even during prolonged usage.

In summary, the Multiquip DCA-45SSIU3 is a powerful and dependable generator that meets the demands of diverse applications. Its robust design, combined with advanced features and efficiency, makes it an ideal choice for contractors, event planners, and anyone needing reliable backup power. With a reputation for performance and longevity, this generator stands out in the competitive market of portable power solutions.