DCA-220SSJ/SSJU — GENERAL INFORMATION

DCA-220SSJ/SSJUWhisperwatt™ Series Familiarization

Generator

The MQ Power Model DCA-220SSJ/SSJU is a 176 kW 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

■Oil Pressure Gauge

■Charging Ammeter Gauge

■Fuel Level Gauge

■Engine Speed Switch

■Panel Light/Panel Light Switch

■Auto ON/OFF Engine Controller (MPEC)

■Preheat Lamp

■Warning Lamp

■Emergency Stop Lamp

■Emergency Stop Button

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, 600 amp Main Circuit Breaker

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

■Automatic Voltage Regulator

■Diagnostic Display

■Current Transformer

■Over-Current Relay

■Voltage Rectifer

■Starter Relay

■Engine Controller (Computer Controlled)

■Voltage Change-over Board

Output Terminal Panel

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

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

■Three auxilliary 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-220SSJ/SSJU 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.

Engine

The DCA-220SSJ/SSJUis powered by a 6 cylinder, water cooled, direct injection, turbocharged John Deere 6068HF485 Turbo Diesel Engine. This engine is designed to meet every performance requirement for the generator. Reference Table 1 for engine specifications.

In keeping with MQ Power's policy of constantly improving its products, the specifications quoted herein are subject to change without prior notice.

Electric Governor System

The electric governor system controls the RPMs of the en- gine. When the engine demand increases or decreases, the governor system regulates the frequency variation to ±.25%.

Extension Cables

When electric power is to be provided to various tools or loads at some distance from the generator, extension cords are normally used. Cables should be sized to allow for distance in length and amperage so that the voltage drop between the generator and point of use (load) is held to a minimum. Use the cable selection chart (Table 6) as a guide for selecting proper extension cable size.

PAGE 18 — DCA-220SSJ/SSJU — OPERATION AND PARTS MANUAL — REV. #1 (02/28/14)

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Multiquip M4870300104B, C1870300404 operation manual DCA-220SSJ/SSJU General Information
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C1870300404, M4870300104B specifications

Multiquip, a leading manufacturer in the construction and industrial sectors, offers a wide range of durable and reliable products. Among its extensive portfolio, two notable models stand out: the M4870300104B and the C1870300404. These models are particularly praised for their efficiency, innovative technologies, and robust features that cater to various construction needs.

The Multiquip M4870300104B is a powerful multi-process welder, designed to tackle a wide variety of welding applications. This model is equipped with an advanced inverter technology that allows it to deliver smooth and stable arcs for TIG, MIG, and Stick welding. The inverter design also enhances energy efficiency, making it an ideal choice for both on-site and workshop use. Furthermore, the M4870300104B features a dual-voltage capability, supporting both 120V and 240V input, which provides flexibility for different job sites.

In terms of usability, the M4870300104B boasts an intuitive control panel that allows for easy adjustments. Its lightweight design ensures easy transport, while the rugged construction promises durability in demanding environments. With a duty cycle of 35% at 200 Amps, this welder is built for efficiency and long-lasting performance, making it suitable for both professional and DIY applications.

On the other hand, the C1870300404 is a high-performance concrete vibratory screed that plays a crucial role in ensuring smooth finishes on concrete surfaces. This model is engineered with advanced vibration technology which allows it to efficiently remove air pockets and stabilize the concrete. The C1870300404 features a robust aluminum frame, enhancing its durability while maintaining a lightweight structure for ease of handling.

Equipped with a powerful and reliable engine, the C1870300404 offers impressive runtime, allowing crews to work continuously without frequent interruptions. It also features adjustable vibration settings, enabling users to customize the intensity based on the specific requirements of the project at hand. The ergonomic design of the handle contributes to user comfort, reducing fatigue during extended periods of operation.

In conclusion, both the Multiquip M4870300104B and C1870300404 exemplify the brand’s commitment to quality, innovation, and user-centric design. These tools not only enhance productivity but also guarantee precision and efficiency in various construction tasks. Whether for welding or concrete finishing, Multiquip continues to deliver equipment that meets the evolving demands of the industry.
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