GE Entelliguard TU Conversion Kit Installation Instructions Manual Download Page 6

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SECTION 4. INSTALLING THE
CONVERSION KIT

This section describes the installation of the Entelliguard,
MicroVersaTrip Plus and MicroVersaTrip PM and conversion
kit. The components provided with the kit are shown in Fig 2.

Mounting Plate

Figure 2: Components supplied with the conversion kit

Current Sensor
(LA4000-Blue)

Wiring Harness

Trip Unit

Connector
Hardware

Flux Shifter
Assembly

Programmer
Bracket Assembly

Summary of Contents for Entelliguard TU Conversion Kit

Page 1: ...signed and tested to conform to ANSI Standard C37 59 allowing the retrofitter to properly install the kit and acceptance test the breaker This publication covers installation of Entelliguard MicroVersaTrip Plus and MicroVersaTrip PM Conversion Kits on Allis Chalmers Siemens Allis and Siemens LA 4000 low voltage power circuit breakers Each Conversion Kit contains all the components needed to conver...

Page 2: ... Installing ththe Trip Unit Wiring Harness Page 7 Installing the Trip Unit Mounting Bracket Page 9 Installing the Current Sensors Page 10 Installing the Communications Harness Page 11 Section 5 Installing the Trip Unit Page 11 Section 6 Four Wire Ground Fault Option Page 12 Section 7 Testing and Trouble shooting Page 13 Testing Pages 13 Trouble Shooting Page 14 Nuisance Tripping on Ground Fault Eq...

Page 3: ...or Page 7 10 36 pin connector adapter bracket Page 7 11 Adapter bracket locking tabs Page 8 12 Installing the push nuts ono the guide pins Page 8 13 Locking tabs on mounting plate Page 8 14 Trip unit bracket mounting Page 9 15 Securing trip unit bracket Page 9 16 Position of current sensors Page 10 17 Installing current sensors Page 10 18 Installing wire harness Page 10 19 Caution label to be appl...

Page 4: ... breakers use high speed stored energy spring operating mechanisms The breakers and their enclosures contain interlocks and safety features intended to provide safe proper operating sequences For maximum personnel protection during installation operation and maintenance of these breakers the following procedures must be followed Failure to follow these procedures may result in personal injury or p...

Page 5: ...s to be installed on a fused breaker LAF series remove the fuse structure from the upper line studs to allow easier access to the load studs Additional work may be required to install kit into fused breaker 3 Loosen the three Allen head screws securing each of the primary disconnects to the line upper and load lower studs and remove the primary disconnects 4 Remove the wires from the original curr...

Page 6: ...icroVersaTrip Plus and MicroVersaTrip PM and conversion kit The components provided with the kit are shown in Fig 2 Mounting Plate Figure 2 Components supplied with the conversion kit Current Sensor LA4000 Blue Wiring Harness Trip Unit Connector Hardware Flux Shifter Assembly Programmer Bracket Assembly ...

Page 7: ...31 dimension as shown in figure 8 and lock with Jam nut Old Reset Asm to be removed New Reset Asm to replace old Asm Existing hardware to be used to install new reset Asm Figure 3 Old and New Reset Assembly Breaker Cross bar Existing hardware Figure 4 Installed Reset Assembly These 2 existing holes are to be used to mount Flux shifter Asm to side of breaker mech Figure 5 Flux Shifter mounting loca...

Page 8: ...ovide protection If the converted breaker is energized or primary injected with the mounting plate not installed or installed improperly damage will result to the trip unit wire harness 36 pin connector and current sensors Failure to adhere to these instructions will void all warranties 2 Slide the adapter bracket onto the 36 pin connector as shown in Figure 10 Be sure that the beveled corners of ...

Page 9: ...own in Figure 12 until the assembly is held firmly against the trip unit mounting plate 5 While holding the adapter bracket and connector assembly firmly in place against the mounting plate bend the two locking tabs on the mounting plate into the mating notches on the adapter bracket using a screwdriver as shown in Figure 13 Figure 12 Installing the push nuts onto the guide pins Figure 13 Locking ...

Page 10: ...ip Unit mounting bracket as shown in figure 14 and secure in this position with locking plate shown in Figure 15 Hardware 20 Hex Hd Lg Plain Washer Split Lk Washer Locking Plate Assy Figure 14 Trip Unit bracket mounting Figure 15 Securing Trip Unit bracket ...

Page 11: ...he breaker B is the center C is the left and are also cut to the appropriate lengths Attached the white wire to the terminal marked white Reattach the primary disconnect assemblies to all the studs To aid in reinstalling disconnect 3 1 4 20 long screws are supplied in hardware package These screws are used only to help force disconnects onto their corresponding studs Disconnects are to be secured ...

Page 12: ... DC to the trip unit Power supply of 24V DC is essential for advanced functions of the trip unit such as backlight display status LED indicator event log etc SECTION 5 INSTALLING THE TRIP UNIT Use the following procedure to install the trip unit 1 Pull out the locking lever on the trip unit mounting plate until it snaps into the open position as shown in Figure 12 2 Carefully line up the 36 pin co...

Page 13: ... bus or cable compartment in the equipment Figure 27 shows the sensor outlines for the 3000 A through 4000 A frame sizes 2 Connect the neutral sensor wire harness to the correct taps on the sensor To maintain the same polarity as the phase sensors connect the white wire to the common terminal black to the tap 3 Route the wires through the equipment and connect to the two pin connector on the trip ...

Page 14: ...e converted breaker each phase of the breaker should be primary injected with a current level of about 10 but no more than 20 of the CT rating During the application of test current activate the trip unit screen by depressing the battery button on the trip unit face and check that the test current is displayed on the screen for each phase tested If the trip unit fails to display the test current s...

Page 15: ...or differs from the others such as by a different rating or wrong tap setting the circuitry can produce an output sufficient to trip the breaker Similarly a discontinuity between any sensor and the trip unit can cause a false trip signal The sensors and their connections should be closely examined if nuisance tripping is encountered on any breaker whose Entelliguard MicroVersaTrip Plus or MicroVer...

Page 16: ...t cover all details or variations in equipment nor do they provide for every possible contingency that may be met in connection with installation operation or maintenance Should further information be desired or should particular problems arise that are not covered sufficiently for the purchaser s purposes the matter should be referred to the GE Company ...

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