Eaton Magnum PXR - Section 1: Introduction; Purpose of the Manual; Safety Guidelines; General Information on Circuit Breakers

Table of contents
MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com v
4 Magnum PXR accessories (continued)
Communication accessories ...............................................53
Modbus_RTU communications ..........................................53
CAM (communications adapter modules) ..................................53
Communication configurations ..........................................54
5 Magnum PXR applications
Transformer breakers .....................................................55
Bus sectionalizing (tie) breakers ............................................55
Generator breakers ......................................................55
Resistance welding ......................................................55
Zone selective interlocking ................................................57
ZSI testing ..........................................................58
Low voltage high resistance ground fault sensing ..............................59
Ground fault provisions and protective schemes ...............................59
Phasing on double-wide application .........................................61
AABBCC or NNAABBCC phasing ........................................61
ABCABC or NABCNABC phasing ........................................61
Power system coordination ................................................61
6 Maintenance, tesing, and operating conditions
Maintenance schedules ...................................................62
Normal maintenance ..................................................62
Increased maintenance ................................................62
Breaker health monitoring .................................................63
Testing ................................................................64
Tools for troubleshooting ..................................................64
Event summaries .....................................................64
Waveform capture ....................................................64
Usual service conditions ..................................................65
Normal environmental conditions ........................................65
Ambient temp and thermal derating tables ................................65
Altitude factors ......................................................66
Test bus configuration .................................................66
Recommended electrical clearances ......................................67
Recommended enclosure size/ventilation ..................................67
Condensation heaters in enclosures ......................................67