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Cutler-Hammer DSII-850
Eaton Cutler-Hammer DSII-850 Manuals
Manuals and User Guides for Eaton Cutler-Hammer DSII-850. We have
1
Eaton Cutler-Hammer DSII-850 manual available for free PDF download: Instructions For Installation, Operation And Maintenance
Eaton Cutler-Hammer DSII-850 Instructions For Installation, Operation And Maintenance (66 pages)
Low Voltage Power Circuit Breakers
Brand:
Eaton
| Category:
Circuit breakers
| Size: 12.72 MB
Table of Contents
Table of Contents
4
Section 1: Introduction Page
9
General Lnformation
9
Type DSLI I (Limiter) Circuit Breaker
9
Safety Features
10
Safety Practices
10
Qualified Personnel
11
Other Publications and Documentation
11
Section 2: Receiving, Handling and Installation
13
General Lnformation
13
Unpacking Circuit Breaker
13
2-2.1 Storing Circuit Breaker
13
Lifting Circuit Breaker
13
Breaker Inspection
14
Levering Circuit Breaker
15
Drawout Dummy Element
16
Fixed Circuit Breaker
16
Section 3: Equipment Description
17
Type Dsll Circuit Breaker
17
Basic Breaker Assembly
19
Pole Units
19
3-4.1 Primary Moving Contact Assembly
19
3-4.2 Primary Stationary Contact Assembly
20
Lnterphase Barriers
20
ION Arc Chutes (Interrupter Assemblies)
22
Electronic Tripping System
22
3-7.1 Electronic Trip Unit
24
3-7.2 Sensors
24
3-7.3 Trip Actuator
24
Operating Mechanism
25
3-8.1 Manually Operated Circuit Breaker
25
3-8.2 Power Operated Circuit Breaker
26
Movable Primary and Secondary Contacts
26
O Standard and Optional Devices
27
3-10.1 Motor Cut-Off Switch (LS)
27
3-10.2 Spring Release Device (SRO)
27
3-10.3 Anti-Pump Relay (Y)
27
3-10.4 Shunt Trip Attachment {Sta
27
3-10.5 Latch Check Switch
28
3-10.6 Auxiliary Switch
28
Undervoltage Trip Attachment (UVT A)
28
3-10.8 Overcurrent Trip Switch
29
Miscellaneous Details
29
3-11.1 Interference Lnterlock
29
3-11.2 Ground Contact
30
3-11.3 Close Bar Guard
30
3-11.4 Operation Counter
30
Section 4: Basic Operating Instructions Page
31
Manual Circuit Breaker Operation
31
4-1.1 Spring Charge Mechanism for Manually Operated Breakers
31
Power Circuit Breaker Operation
32
4-2.1 Spring Charge Mechanism for Power Operated Breakers
33
4-2.2 Power Operation
37
Closing Mechanism
37
Opening (Tripping) Mechanism
39
Mechanical Interlocking System Description
42
4-5.1 Remove Position
42
4-5.2 Disconnect Position
42
4-5.3 Test Position
42
Connect Position
44
Mechanical Interlocking System Operation
44
4-5.6 Spring Discharge Interlock
46
4-5.7 Connected Breaker Manual Close Lnterlock
46
4-5.8 Electric Lockout Equipped Breaker
46
4-5.9 Closed Breaker Interlock
46
4-5.10 Padlocking Provision
48
Dslll Circuit Breaker and Fuse Truck
49
4-6.1 Dslll Current Limiters
50
4-6.2 Blown Limiter Indicator
50
4-6.3 Fuse Truck
50
4-6.4 Fuse Truck Installation and Use
51
4-6.5 Fuse Replacement
51
4-6.6 Blown Fuse Indicator
51
Section 5: Inspection and Maintenance
53
General
53
General Cleaning Recommendations
53
When to Inspect
53
What to Inspect
53
5-4.1 Dsll-308 through Dsll-620 Inspection
54
5-4.2 Dsll-632 and Dsll-840/850 Lnspection
54
5-4.3 Dsll-308 Contact Replacement
54
5-4.4 Dsll-516 through Dsll-840/850 Contact Replacement
54
5-4.5 Arc Chutes
55
5-4.6 Power Operated Mechanism
56
Factory Adjustments
56
5-5.1 Trip Latch Overlap Adjustment
58
5-5.2 Breaker Open Position Stop Adjustment (Dsll-632 Only)
58
5-5.3 Moving Contact Adjustment
60
5-5.4 Levering Mechanism Adjustment
60
Lubrication
61
5-6.1 Lubrication Frequency
61
5-6.2 Lubrication Location
61
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