ELECTRICAL CIRCUIT TRAINER

PURPOSE:

To provide the sensors, monitors, and protec- tion devices for learning the meaning of ground fault currents  and the code requirements for ground fault protection

DESCRIPTION:

MZM-4000-1  Ground Fault Protection Demonstrator contains all of the facilities required to simulate and monitor ground fault currents  and the means of providing ground fault protection on both 3φ feeder circuits and 1φ branch circuits.

The 3φ feeder circuit includes: a three-pole shunt trip circuit breaker; current monitor; con- trol transformer; ground fault sensor; test panel with tripped, reset, test, and run lighted push- buttons; adjustable load for ground fault inser- tion; AC ammeter for monitoring ground fault current; and an output receptacle for load con- nections.

The 1φ branch circuit includes: single-pole Quicklag GFCI circuit breaker; adjustable load for ground fault inser tion; AC milliammeter for monitoring ground fault current; and load con- nections consisting of output jacks and a duplex receptacle.

Components are mounted on 3/4" thick white melamine covered wood core panel, 42"H x 48"W,  secured to mobile A-frame.  Power input is 120/208 volt, 3φ by means of 5-wire receptacle and power cord, provided. Furnished complete with interconnecting cords.

PURPOSE

MZM-4000-2 contains all of the actual components found in standard residential and industrial security systems. The unit provides the student with experience in designing, wiring, checking out, and troubleshooting bur- glar alarm circuits.

DESCRIPTION

All of the sensing, alarm, and control compo- nents are mounted on the face of the HampdenMZM-4000-2, where their wiring terminates in heavy-duty binding posts. The student uses banana-plug leads (provided) to interconnect

the components into operating security systems.

CONTROL COMPONENTS

• Control/Communicator with transformer  and cabinet
• Main 120V AC control with pilot light, cir- cuit breaker, switch, box, and photo relay reflector
• Piezo alert alarm
• Motion detector
• Strobe light - blue lens
• Outside light
• External siren with cabinet
• Key pad
• Audio switch
• Telephone jack
• Smoke detector
• Infrared photo relay
• Remote key plate - tamperproof
• Window switch assembly (4) with bracket
• Magnetic switch with bracket
• Door switch (2) with bracket
• Duplex receptacle
• Relay, N.O.
• Low voltage AC supply with fuse holder
• Resistor, end of line (6)

Components are mounted on 3/4" thick white melamine covered wood core panel. The panel is mounted on a mobile A-frame and a power outlet supplied through a 10 ft. 120V, single-phase power cord.