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Sentinel™ EFI-BLZ
3.1.2 SINGLE-CORE CABLE SYSTEM
A larger current sensor (CT300) is available for application on single core cable systems. These
systems usually consist of three single-core cables spaced in a row, side-by-side. The flexible sensor
core is wrapped tightly around all three cables forming a rectangular oval, and fastened in place
with cable-ties. Care should be taken to ensure that the core is mounted on the screened part of
the cable. The screen of all three conductors should be turned back underneath the core and then
terminated to earth as shown in Figure 2.
3.2 INDICATING UNIT
The Sentinel™ indicating unit is normally flush mounted onto a vertical surface. When the cover is
removed, mounting holes are exposed for use in bolting the indicating unit to a surface. The current
sensor and other accessories are electrically connected to the indicating unit by feeding the leads
through cable glands on the indicating unit and connecting them to two-way screw terminals
mounted inside the indicating unit enclosure. With the cover and cable glands tightened firmly the
enclosure provides IP65 protection.
FIGURE 3: INDICATING UNIT SHOWING
FIGURE 3: INDICATING UNIT SHOWING TERMINALS AND MOUNTING HOLES
Enclosure
Lid
Battery
LED
Indicator
Remote
Indicator
Terminal
Auxiliary
Relay
Terminal
115mm
Version 4.1
User's Manual
Mounting
Holes
Test/Reset
Pushbutton
65mm
Trip Level
Select
CT Terminal
Page 6 of 11
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