Eaton 93PM Installation Guide Page 57
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P-164000249 30-200 kW 49
Revision 2 User's and Installation Guide
MOB’s
Module Output Breakers (MOBs) allow the output of the UPS to be disconnected from the other
UPSs and system load for maintenance and service. Design considerations assume that each UPS
has a Module Output Breaker (MOB). The breaker shall not disconnect neutral.
The MOB must have a Form “C” auxiliary contact. The N.C contact is connected to the corresponding
UPS’s input used for signal input. The N.O. contact is used to disconnect the Bypass Pull-Chain when
the MOB is open. Figure 4-9: Principle of paralleled UPS systems on page 49 shows the principles
of paralleled UPS systems including MOBs and outputs from UPSs.
MOB Override
Users without MOBs installed can simply leave the MOB signal input disabled. The user should be
aware that systems without MOB have limited maintenance capability.
Parallel system wiring
Figure 4-9: Principle of paralleled UPS systems
Required parallel system wiring length must be equal to ensure approximately equal current sharing
when in Bypass mode.
For proper operation the following must be true: 1A+1B=2A+2B=3A+3B=4A+4B.
Any difference in wire length will result in decreased capacity and improper operation of the UPS
system while on bypass.
- Eaton 93PM UPS P-164000249 1
- 30-200 kW 1
- Eaton 93PM UPS 3
- Contents 5
- List of Figures 7
- List of Tables 8
- 1 Safety instructions 9
- 2 30-200 kW P-164000249 10
- 1.1 Audience 11
- 1.2 CE marking 11
- 1.3 User precautions 12
- 1.4 Environment 12
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- 1.7 For more information 14
- P-164000249 30-200 kW 7 15
- 2 Introduction to Eaton UPS 16
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- 2.2 UPS operating modes 21
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- Internal relay contacts 22
- P-164000249 30-200 kW 15 23
- 2.2.3 Bypass mode 24
- 2.3 UPS features 25
- 2.3.2 Powerware Hot Sync 26
- 2.4.1 Customer interface 26
- 2.5 Options and accessories 27
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- 1. Bypass Input Breaker (BIB) 29
- 2.6 Battery system 30
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- 3.2 Site preparations 33
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- 4 UPS system installation 44
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- Top cable access kit 47
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- 4.6.1 Power wiring overview 56
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- 5 Communication interfaces 61
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- 5.3 Signal input monitoring 64
- P-164000249 30-200 kW 57 65
- 6 UPS operating instructions 66
- P-164000249 30-200 kW 59 67
- 6.1.2 Status indicators 68
- 6.2 Steps to operate the UPS 69
- 6.3 Signing in 70
- STARTING 71
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- 6.5 UPS control instructions 75
- 6.6 UPM control instructions 76
- P-164000249 30-200 kW 69 77
- 70 30-200 kW P-164000249 78
- Maintenance Bypass 78
- Switch (MBS) 78
- P-164000249 30-200 kW 71 79
- 7 UPS maintenance 80
- 7.2.1 DAILY maintenance 81
- 7.2.2 MONTHLY maintenance 81
- 7.2.3 PERIODIC maintenance 81
- 7.2.4 ANNUAL maintenance 82
- 7.2.5 BATTERY maintenance 82
- 7.4 Maintenance training 83
- 8 Technical data 84
- 8.2 UPS system input 85
- 8.3 UPS system output 85
- 8.4 Battery specification 86
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- 9 Warranty 89
- 10 Installation checklist 90
- P-164000249 30-200 kW 83 91
- 11 APPENDIX A: User settings 92
- Setting Description 93
- Table 11-2: Config settings 93
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