GDP-5H — GENERAL INFORMATION

WARNING

Before connecting this generator to any building’s electrical system, a licensed electrician must install an isolation (transfer) switch.

Serious injury or death may result without this transfer switch.

GDP-5H FAMILIARIZATION

Generator

The Multiquip Model GDP-5H generator has been designed as a portable dual purpose power source for 60 Hz (single phase) lighting facilities, power tools, submersible pumps and other industrial and construction machinery. In addition the Model GDP-5H has been designed as a power source for 180 Hz, 3-phase concrete vibrators or other equipment that may require 3-phase power for operation.

The generator is mounted on rubber vibration isolators that have a steel base backplate which is attached to the protective steel pipe carrying frame.The protective carrying frame is made of steel tubing and fully wraps around the generator to protect against damage. See Figures 4A through 4E for the basic controls and indicators for the GDP-5H generator.

This portable generator is supplied with a electrical control box. To reduce vibration caused by the engine, the control box is also placed on rubber isolators.

Control Box

The control box is provided with the following:

■Three 230V twist-lock output receptacles (three phase).

■240V twist-lock output receptacle (single phase).

■120V twist-lock receptacle (single phase).

■120V GFCI duplex output receptacle, (single phase).

■60 Hz (single phase) circuit breaker.

■180 Hz (three phase) earth leakage circuit breaker.

■AC Voltmeter

■Ground Terminal

■Full Power Switch

■Idle Control Switch

■Operation Switch

Excitation System

The GDP-5H-series generators use a magnet attached to a flywheel to produce AC voltage from a lamp coil beneath the flywheel. As the magnetic passes the coil it produces approximately 19-22 AC volts.

This voltage (19-22 VAC) is then sent to the control box that contains three rectifying diodes:

zExcitation (diode 1)

zBattery (diode 2)

zSlow Down (diode 3)

The AC voltage will pass through the excitation diode that converts the voltage to DC power.

This DC power is then sent to the excitation windings housed within the main windings commonly called the "stator".

This voltage is then transferred into the rotor through induction.The rotor contains two diodes within it which rectify the DC voltage and send it out through the main windings, as AC voltage.

Alternator

The alternator, a brushless revolving-field type, is permanently aligned to the engine through rigid coupling.

Engine

This generator is powered by a 11 HP, air-cooled, 4-stroke HONDA gasoline engine. Reference Table 2, for engine specifications.

3-Phase Vibrator Application

When using this generator with 3-phase vibrators do the following:

■ALWAYS use a vibrator with short circuit protection.

■ALWAYS use rubber boots and gloves when operating the vibrator.

■ALWAYS use adequate size connecting cable for extension.

■ALWAYS maintain electrical cords in good condition and frequently replace the entire cable of the vibrator with a new one.

GDP-5H A.C. GENERATOR — PARTS & OPERATION MANUAL — REV. #2 (10/05/05) — PAGE 15

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Multiquip GDP-5H manual Generator, Control Box, Excitation System, Alternator, Engine, Phase Vibrator Application
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GDP-5H specifications

The Multiquip GDP-5H is a robust and versatile piece of equipment designed for various industrial applications, particularly in construction and heavy-duty operations. As part of Multiquip's lineup, the GDP-5H stands out owing to its exceptional performance, durability, and user-friendly design.

One of its main features is the powerful Honda GX160 engine, which provides reliable performance and ensures efficient operation. The engine is known for its longevity and low maintenance requirements, allowing operators to focus on their tasks without frequent interruptions. Additionally, the GDP-5H has a compact design, making it easy to transport and maneuver in tight job sites.

The GDP-5H comes equipped with a hydraulic pump that delivers high flow rates, allowing for fast and efficient operation. This is particularly advantageous when working with multiple attachments or in demanding environments where time is of the essence. The hydraulic system is engineered for maximum reliability and ease of maintenance, featuring components that are readily accessible.

In terms of versatility, the GDP-5H can be fitted with various attachments, making it suitable for a range of applications, from trenching to lifting and beyond. This adaptability not only enhances productivity but also allows companies to optimize their investment in equipment.

Safety is a priority in the design of the Multiquip GDP-5H. It features operator-friendly controls that are intuitive and easy to understand, minimizing the risk of accidents and enhancing overall operational safety. Additionally, the equipment is designed with protective measures to safeguard both the operator and the machine from potential hazards.

The GDP-5H also emphasizes convenience through its fuel efficiency and reduced emissions, meeting stringent industry standards. This is increasingly important in today's world, where environmental considerations play a critical role in equipment selection.

In summary, the Multiquip GDP-5H is a powerful, adaptable, and user-friendly machine that addresses the needs of various industrial applications. Its combination of a reliable Honda engine, efficient hydraulic system, safety features, and versatility positions it as a valuable asset for any construction or heavy-duty operation. Whether used for site preparation, material handling, or other tasks, the GDP-5H proves to be an essential tool for productivity and efficiency on the job.
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