FiGUreS
Figure Title
Page
1-1 Type DSII Circuit Breaker Family ............................................................................................ 7
1-2 Typical DSII Nameplate .......................................................................................................... 9
1-3 Type DSLII Breaker with Integral Current Limiters................................................................10
1-4 DSII Breaker Shown on Compartment’s Captive Extension Rails .........................................10
2-1 DSII Breaker with Lifting Yoke Installed .................................................................................12
2-2 DSII Breaker with One Interphase Barrier Removed ............................................................12
2-3 DSII Breaker with One Arc Chute Removed .........................................................................13
2-4 DSII Levering Device Arm Shown in REMOVE Position .......................................................13
2-5 Typical Fixed Type DSII Circuit Breaker ..................................................................................14
3-1 Type DSII Circuit Breaker (Front and Rear Views) ..................................................................15
3-2 Type DSLII Circuit Breaker (Front and Rear Views) ................................................................16
3-3 Typical DSII Faceplate ...........................................................................................................18
3-4 Type DSII-308 Pole Unit Assembly (Front View) ....................................................................19
3-5 Type DSII-308 Pole Unit Assembly (Rear View) .....................................................................19
3-6 Type DSII-516 Pole Unit Assembly (Front View) ................................................................... 20
3-7 Type DSII-516 Pole Unit Assembly (Rear View) .................................................................... 20
3-8 DSII Interphase Barriers Being Removed ............................................................................. 21
3-9 DSII Arc Chute Being Removed ........................................................................................... 21
3-10 Typical Type DSII Tripping System Diagram .......................................................................... 21
3-11 Type DSII Trip Actuator ......................................................................................................... 22
3-12 Typical Front/Rear View of Manual Spring Charge Mechanism ............................................ 23
3-13 Typical Front/Rear Views of Power Operated Spring Charge Mechanism ............................ 24
3-14 Type DSII Circuit Breaker (Bottom View) .............................................................................. 25
3-15 Anti-Pump Relay Shown Unmounted .................................................................................. 25
3-16 Power Operated DSII Breaker (Front Cover Removed) ........................................................ 26
3-17 Latch Check Switch Operation ............................................................................................. 27
3-18 Undervoltage Trip Attachment Operation ............................................................................. 27
3-19 Overcurrent Trip Switch Operation ....................................................................................... 28
3-20 Close Bar Guard Shown Installed ........................................................................................ 28
4-1 Manual Charging of Breaker Closing Springs ....................................................................... 29
4-2 Principal Parts in Manually Charged Spring Operated Mechanism ...................................... 30
4-3 Manually Operated Spring-Charging Mechanism Details..................................................... 31
4-4 Principal Parts in Power Operated Mechanism (Close Spring Shown in Charged Position) . 32
4-5 Crank Shaft Assembly Front View (Some Parts Omitted for Clarity) .................................... 33
4-6 Power Operated Spring-Charge Details ............................................................................... 34
4-7 Four Basic Positions of Breaker and Linkage (Enlarged View of Trip Shaft) .......................... 36
4-8 Emergency Spring-Charge on Power Operated Mechanism................................................ 37
4-9 Basic Schematic and Connection Diagrams for Power Operated Breaker ........................... 38
4-10 Drawout Unit Position Indicator ........................................................................................... 39
4-11 Shutter, Trip Plate and Trip Shaft Relationship ....................................................................... 41
4-12 Shutter, Interlock Cam and Levering Device Arms Relationship .......................................... 43
4-13 Close-Release Interlock to Discharge Springs on Levering Out ........................................... 45
4-14 Close Interlock Preventing Efforts to Close Already Closed Breaker ................................... 46
4-15 Padlock Device (Locked Trip-Free with Shutter Raised) ........................................................ 47
4-16 DSLII-516 Circuit Breaker (Side View) .................................................................................. 48
4-17 Blown Limiter Indicator ........................................................................................................ 50
4-18 DSII-FT32 Fuse Truck (Front View) ........................................................................................ 50
Effective July 2010
Instructional Book
IB694C694-03
5
eaton corporation
www.eaton.com
