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Magnum

6

1812.900A

WARNING

MAGNUM CIRCUIT BREAKERS SHOULD NOT
UNDER ANY CIRCUMSTANCES BE APPLIED
OUTSIDE THEIR NAMEPLATE RATINGS.
OPERATION OUTSIDE OF THESE RATINGS COULD
RESULT IN DEATH, BODILY INJURY OR PROPERTY
DAMAGE.

1.2

Purpose

.

This instruction manual is expressly intended to cover the
installation, operation and maintenance of Magnum Air
Circuit Breakers. These circuit breakers may be supplied
as part of complete switchboard assemblies or as
separate components. This manual applies only to the
circuit breaker and (if drawout) it’s mating cassette.
Magnum circuit breakers may also be supplied as fixed
mounted devices. In the case of fixed versions of
Magnum circuit breakers, certain sections of this manual,
referring to such items as position interlocks and the
drawout mechanism, will not apply.

Trip units associated with Magnum Air Circuit Breakers
will be addressed in a general manner in this manual.
Specific trip unit details and time-current characteristic
curves are covered in separate documents specific to the
trip units.

Magnum circuit breaker accessory items are discussed
briefly in this manual. Field installation instructions for
such items, however, are covered in individual instruction
leaflets specific to the accessory. This information is also
available from the Eaton website at
www.eatonelectrical.com

For application information, consult Eaton or see
applicable Product Guides, Technical Documents,
Application Publications and/or Industry Standards.

SAFETY

All safety codes, safety standards and/or regulations must
be strictly observed in the installation, operation and
maintenance of this equipment.

WARNING

THE WARNINGS AND CAUTIONS INCLUDED AS
PART OF THE PROCEDURAL STEPS IN THIS
MANUAL ARE FOR PERSONNEL SAFETY AND
PROTECTION OF EQUIPMENT FROM DAMAGE. AN
EXAMPLE OF A TYPICAL WARNING LABEL
HEADING IS SHOWN ABOVE TO FAMILIARIZE
PERSONNEL WITH THE STYLE OF PRESENTATION.
THIS WILL HELP TO INSURE THAT PERSONNEL
ARE ALERT TO WARNINGS. IN ADDITION,
CAUTIONS ARE ALL UPPER CASE AND BOLDFACE.

1.3 Safety

features

Magnum circuit breakers and associated drawout
equipment are manufactured with built-in interlocks and
safety related features. They are provided to reduce
hazards to operating personnel and provide proper
operating sequences.

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Содержание Magnum Air MWI-408

Страница 1: ...Double wide Fixed Standard Frame Fixed User Manual Magnum 1812 900A Magnum LV Air Circuit Breaker Narrow Frame Fixed...

Страница 2: ...chgear installations such as setting up the connecting of cables operation inspection and maintenance must only be carried out by persons authorised to do so Administrative data Version number A Date...

Страница 3: ...assembly 20 3 3 Pole units 20 3 3 1 Primary moving contacts 20 3 3 2 Primary stationary contacts 21 3 4 Operating mechanism 22 3 4 1 Manual operation 22 3 4 2 Electrical operation 23 3 4 3 Anti pump...

Страница 4: ...ect 46 6 4 What to inspect 47 6 4 1 Functional field testing 47 6 4 2 Arc chute inspection 48 6 4 3 Primary contact inspection 49 6 5 Circuit breaker modifications and changes 50 6 5 1 Rating plug rep...

Страница 5: ...reakers use a rigid frame housing of engineered thermoset composite resins which has high strength structural properties excellent dielectric characteristics and arc tracking resistance The drawout Ma...

Страница 6: ...ip units Magnum circuit breaker accessory items are discussed briefly in this manual Field installation instructions for such items however are covered in individual instruction leaflets specific to t...

Страница 7: ...E40 E4N 65 85 100 1 65 85 100 150 2 65 NA 85 65 100 85 150 100 5000 MWI 850 85N MWI C50 C5N MWI E50 E5N 85 100 150 2 85 65 100 85 150 100 6300 MWI 863 86N MWI C63 C6N MWI E63 E6N 85 100 150 2 85 65 10...

Страница 8: ...ghly trained in the operation of the circuit breaker and how it interfaces with the assembly in which it is used In addition the individual should have knowledge of the connected loads For the purpose...

Страница 9: ...sting and or installation When ready to inspect and install the Magnum circuit breaker carefully remove the banding straps and lift off the cardboard box Remove any additional packing material and int...

Страница 10: ...ers once removed from their shipping containers should be visually inspected for any obvious damage The current rating of the rating plug installed in the trip unit should match the current rating of...

Страница 11: ...side rejection plate and key pattern must be assembled and installed by the switchboard builder Figure 2 2 Rear View Showing Current Sensor Rating Through Viewing Window CAUTION DO NOT DISABLE REJECTI...

Страница 12: ...proceed with the rest of the circuit breaker installation From Table 2 2 make a pin location comparison Stop nuts should be torqued to 8 10 Ft Lb Figure 2 4 Cassette Rejection Interlock Pin Positioni...

Страница 13: ...e or Inspection Position Figure 2 5 Remove Position Only Ground Connection Made Breaker Still Behind Door Typical Storage Position Figure 2 6 Disconnect Position Breaker and Trip Unit Testing Primary...

Страница 14: ...reaker is held trip free Begin by rotating the levering in screw to the full counterclockwise DISCONNECT position Close the compartment door and begin levering the breaker into its different positions...

Страница 15: ...econdary connection devices are mounted at the top front of the circuit breaker The fixed circuit breaker frame has two mounting feet one on each side to permit the fixed circuit breaker to be securel...

Страница 16: ...t breakers are available from the factory with several different phase sequences distinguishable by the sixth character in the model number Figure 1 3 The phase sequence is also labeled on the rear of...

Страница 17: ...Chute Cover 2 Secondary Disconnect 3 Faceplate Front Cover 4 Integral Lifting Handle 5 Fixed Horizontal Primary Terminal 6 Fixed Primary Terminal with optional Vertical Adapter 7 Arc Chamber 8 Sensor...

Страница 18: ...Rear Views 1 Baffled Arc Chute Cover 2 Secondary Contact Connector 3 Faceplate Front Cover 4 Integral Lifting Handle 5 Fixed Vertical Primary Terminals with Optional Vertical Adaptor 6 Arc Chamber 7 M...

Страница 19: ...n Close 6 Spring Status Charged Discharged 7 Manual OFF Button Push 8 Manual ON Button Push 9 Manual Charge Handle 10 Optional Operation Counter 11 Padlockable Levering Device Access Door for Drawout...

Страница 20: ...eaker s frame size Double wide circuit breakers use two pole units and arc chute assemblies connected mechanically and electrically in parallel to form each phase Figure 3 5 Typical Magnum Constructio...

Страница 21: ...e is a conductive pad mounted on the line conductor which functions as the stationary main contact The other is an arc runner also connected to the line conductor The integral arc runner serves a dual...

Страница 22: ...by pressing and releasing the appropriate button Access to these pushbuttons can be limited by the use of an optional padlockable cover In addition complete access to the ON button can be prevented w...

Страница 23: ...arged and latched the close command will be ignored until it is removed and reapplied Figure 3 12 Electrical Motor Operator to Charge Closing Spring 1 Electrical Motor Operator For electrical closing...

Страница 24: ...icroprocessor based trip unit Magnum circuit breakers use any one of a family of Digitrip RMS trip units whose main features are summarized in Table 3 1 Versions of the trip unit without the i meet th...

Страница 25: ...vels and the tripping energy are derived from the current sensors integrally mounted in the circuit breaker Control power is required to operate certain optional display and metering functions Table 3...

Страница 26: ...t of the rating plug clearly indicates that the rating plug and sensors must have the same rating 2 It determines the maximum instantaneous setting which is a function of the current sensor rating 3 W...

Страница 27: ...eplate Figure 3 17 It operates by releasing and popping out any time the circuit breaker trips due to to an overcurrent condition Note that the mechanical trip indicator will not prevent the breaker f...

Страница 28: ...ory Figure 3 20 illustrates line side voltage taps Figure 3 20 Line Side Voltage Tap for 1150 Trip Unit Labels Legend OTS Overcurrent Trip Switch UVR Undervoltage Release ATR Automatic Trip Relay 520M...

Страница 29: ...tors male and female just described in the two previous paragraphs The plug in connectors are joined and attached to the top portion of the circuit breaker The customer can plug secondary wiring with...

Страница 30: ...VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION 6 TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AND OR GROUND TIME FUNCTIONS FOR TESTING OR NON ZONE INTERLOCKING...

Страница 31: ...NE INTERLOCKING APPLICATIONS A JUMPER FROM B 8 TO B 9 IS REQUIRED 5 ON THREE POLE BREAKERS ONLY HAVING GROUND FAULT FUNCTIONALITY A JUMPER INSTALLED FROM B 6 TO B 7 WILL ENABLE SOURCE GROUND FAULT SEN...

Страница 32: ...PULSE WILL OCCUR WHEN THE MECHANISM IS CHARGED AND RESET LCS OPEN VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION 6 TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME...

Страница 33: ...PULSE WILL OCCUR WHEN THE MECHANISM IS CHARGED AND RESET LCS OPEN VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION 6 TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME...

Страница 34: ...LSE WILL OCCUR WHEN THE MECHANISM IS CHARGED AND RESET LCS OPEN VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION 4 TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AN...

Страница 35: ...LSE WILL OCCUR WHEN THE MECHANISM IS CHARGED AND RESET LCS OPEN VOLTAGE MUST BE REMOVED AND REAPPLIED TO THE SPRING RELEASE FOR SUBSEQUENT OPERATION 4 TO PROVIDE SELECTED TIME DELAYS FOR SHORT TIME AN...

Страница 36: ...windows located in the right front of the circuit breaker Figure 3 31 All four are plug in type and can be factory installed or field installed The four Plug In accessories are Shunt Trip ST Spring Re...

Страница 37: ...the anti pump feature of the electrical charging closing system Figure 3 34 Spring Release with Optional Latch Switch Table 3 4 Spring Release Ratings Control Voltages Operational Voltage Range 70 110...

Страница 38: ...urrent trip switch to operate The overcurrent trip switch has 2a 2b Form C contacts Table 3 6 The status of the contacts changes when the trip indicator pops out This permits the switch to be used as...

Страница 39: ...408 528 Vac 144 288 Vac 400 VA 10 VA 70 600 Vac 2 510 660 Vac 180 360 Vac 400 VA 10 VA 70 1 Required for 200 ms 2 Required for 400 ms Table 3 6 Auxiliary Switch Overcurrent Trip Switch and Cell Switc...

Страница 40: ...eaker and can be viewed through the front cover Figure 3 41 The customer supplies the key lock The provisions available are for Kirk Castell or Ronis Figure 3 41 Cover Mounted Key Lock and Operations...

Страница 41: ...rs in Closed Position Figure 3 45 Safety Shutters in Open Position Door Escutcheon The door escutcheon is a molded frame used to seal the space between the circuit breaker and the compartment door cut...

Страница 42: ...n the relative orientation of the breakers Rods can be used only when the circuit breakers to be interlocked are vertically stacked Cables can be used for any orientation of the breakers Mechanical in...

Страница 43: ...nd secondary connections For the IEC circuit breaker a cassette style using horizontal stabs and horizontal customer bus bar terminals is available as standard Figure 4 3 The cassette terminal connect...

Страница 44: ...3 Secondary Plug in Connectors 4 Secondary Terminal Blocks 5 Arc Hood 6 Optional Cell TOC Switch 7 Optional Key Interlock 8 Earthing Bar 9 Open Safety Shutters 10 Primary Terminals Rear View Figure 4...

Страница 45: ...llation of a fixed circuit breaker was discussed in Section 2 If necessary review that information since it will not be repeated here 5 2 Fixed circuit breaker dimensions The standard fixed circuit br...

Страница 46: ...record sheets be completed for the equipment Careful and accurate documentation of all maintenance activities provides a valuable historical reference on equipment condition over time 6 2 General clea...

Страница 47: ...YPE CIRCUIT BREAKERS MAKE SURE THE BREAKER IS LEVERED OUT TO THE TEST OR DISCONNECT POSITION DURING THE LEVERING OUT AND LEVERING IN OF THE CIRCUIT BREAKER BE AWARE OF ANY SIGNS THAT WOULD INDICATE TH...

Страница 48: ...erify closing by noting the state of the indicating flag Charge the breaker mechanism springs either using the charging handle or the motor operator If using the motor operator disconnect power to it...

Страница 49: ...igure 6 2 A contact wear indicator is provided for each primary contact and indicates whether or not the contact should be replaced Inspection of the contacts using the contact wear indicators is cond...

Страница 50: ...devices Their installation is covered by separate instruction leaflets dedicated to the individual devices The tasks described here do not under ordinary circumstances require any assistance beyond t...

Страница 51: ...crewdriver to tighten the M4 screw and secure the rating plug in the trip unit The maximum torque on the mounting screw is 15 in oz Close the rating plug door 6 5 2 Current sensor replacement NOTICE R...

Страница 52: ...them off of the terminals and unplugging the wiring plugs from the sensors Figure 6 8 Install new current sensors by connecting the wiring plugs to the sensors and sliding the sensors over the termina...

Страница 53: ...ake sure shunt trip is seated and retainer snapped into place Check for shunt trip motion replace shunt trip if faulty Circuit breaker cannot be opened remotely but can be opened locally Secondary con...

Страница 54: ...s Levering in screw n ot in fully DISCONNECT position at insertion Rotate levering in screw counterclockwise to DISCONNECT position then insert breaker fully into cassette Levering in screw in DISCONN...

Страница 55: ...ctorial and or graphic reference Also include the circuit breaker type General Order number and other information as shown on the nameplate on the front cover of the circuit breaker Figures 1 2 and 3...

Страница 56: ...44 0 8700 540 333 E mail ukcommorders eaton com Eaton Electric NV PO Box 23 7550 AA Hengelo The Netherlands Customer Support Centre Tel 31 0 74 246 7066 Fax 31 0 74 246 7070 E Mail c heuropesupport ea...

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