Figure 6-45.--XY universal switch test set controls.

6-11 lists the control and function of the current

table 6-10 corresponds to the XY test set in

flow test set.

LIGHTNING ARRESTER AND SHORE-

CURRENT FLOW TEST SET.-- The

current flow test set (fig. 6-46) is a portable, relay-

LINE CONNECTIONS BOXES.-- Shore lines are

adjusting test set. It is connected by its power cable to

provided to a connection box on the pier for use by

an external dc power source. The resistance circuits

ships, As an IC Electrician, you will be required to rig

of the test set are connected to binding posts. The

shore lines for your ship. The number of shore lines

relay to be adjusted is connected to the binding posts

assigned will depend on the size of your ship; the

by two test leads.

bigger the ship, the more lines. Some of the shore

lines will be connected to the attendant's cabinet for

The purpose of the test set is to enable a

general use and others will be connected directly to

maintenance person to readjust the relays in a

telephone sets that are not part of the switchboard

telephone system. Four independent, continuously

system. The direct shore lines are used by the

variable resistance circuits are provided in the test

commanding officer, the executive officer, department

set. This allows the maintenance person to set up for

heads, and other designated personnel.

operate, nonoperate, release, and hold or scale

current requirements of a relay under adjustment. A

The ship's IC Electricians are responsible for

three-range milliammeter allows the maintenance

maintaining a shore-line cable. When rigging shore

person to adjust to the correct current level. Table

lines, one end of the cable will be connected to the

Figure 6-45.--XY universal switch test set controls.