Determine the best component locations for your installation by applying the following strategies.
The Compact Brush Condition Monitoring System has an operating temperature range of -20°C (-4°F) to 70°C (158°F). Avoid mounting the enclosure in areas that approach the limits of or depart from this temperature range on a regular basis. If possible, avoid mounting the monitoring system in a location that experiences direct sunlight for extended periods of time throughout the day. If sunshine exposure is unavoidable, inquire with Cutsforth about installation of a sun-shield.
The monitoring system should be installed in such a way that does not complicate generator disassembly during outages.
The monitoring system should be mounted in a location that does not experience excessive vibrations. Mounting directly to rotating equipment, such as a generator, or other structures with known vibrations, is not recommended. All cabling should be strain-relieved near input connectors. Take care to not directionally bias cable connectors when applying strain relief.
The Cutsforth Brush Health Sensors will be installed on Cutsforth EASYchange® brush holder equipment. This is a pre-requisite for the Compact Brush Condition Monitoring installation. The Compact Brush Condition Monitoring System display is the HMI (Human-Machine Interface) component for the system. It will be important to select a cBCM mounting location that is in close proximity to the collector area. A worker performing brush changes will interact with the cBCM system and the brushes on a brush-by-brush basis. Therefore, a mounting location within a few steps of the brush gear makes sense whereas a distant location would not. See below image for example. The Compact Brush Condition Monitoring System enclosures are typically mounted using a Unistrut® frame as shown in the example below.
Physical barriers may be present between the Brush Health Sensors and the Compact Brush Condition Monitoring System. The ideal antenna placement (A) would be one which does not have any physical barriers between the Brush Health Sensors and the antenna. Penetrations may be required in the brush compartment in order to mount the antenna in the optimal position. Cutsforth recommends the antenna be placed inside the exciter enclosure.
|
Power Requirement |
Value |
|---|---|
|
Voltage |
85-264 VAC |
|
Recommended breaker size |
20 A |
|
Recommended power cabling wire gauge |
12 AWG |
|
Actual operational current draw |
~ .5 A at 120 VAC |
|
Component |
Standard Recommendation |
Recommendation for High-Corrosion Environments |
|---|---|---|
|
Conduit type |
Galvanized rigid metal conduit (RMC) |
Rigid Aluminum Conduit (RAC) |
|
Conduit fittings type |
Malleable |
Aluminum |
|
Strut channel type |
Hot dipped galvanized, back-to-back |
316 Stainless steel |
|
Mounting hardware |
316 Stainless steel |
316 Stainless steel |
|
Liquid flexible metallic conduit |
Type HCX |
Type HCX |
Cutsforth recommends that a duct seal be used to seal the inside of any conduit entering the Cutsforth monitoring system enclosure(s). The duct seal should be non-permanent in nature to accommodate future equipment or cable maintenance.