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Zeitview Asset Insights User Guide
  • Pages
    • 1. Understanding Asset Conditions and Anomaly Severity
    • 2. Understanding Inspection Deliverables
    • 3. Inspections Page
    • 4. Reviewing Inspection Details
    • 5. Anomalies Page
    • 6. Managing Users
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Zeitview Asset Insights User Guide
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1. Understanding Asset Conditions and Anomaly Severity

1. Understanding Asset Conditions and Anomaly Severity

Asset conditions and anomaly severities provide a quick way of assessing the health of your assets and prioritizing issues affecting them.

Solar Asset Conditions and Severities

Solar Asset Conditions

Solar asset conditions are based on historical, industry-wide performance data that Zeitview has collected over the years. Assets are segmented into quintiles of performance (i.e. 1st-20th percentile, 21st-40th percentile, 41st-60th percentile, 61st-80th percentile and 81st-100th percentile) based on percentage power loss of the site.
The tables below show how asset conditions are assigned to solar farms, inverters, stacks (i.e. Zeitview-defined geospatial regions), and combiners based on the power loss of the anomalies affecting them.
Table of Solar Asset Conditions (Site Capacity ≤ 5 MW DC)
Power Loss (%) - excl. Inverter Outages
Condition
0-0.3
Very Good
0.3-1
Good
1-2
Fair
2-6
Poor
6+
Very Poor
There are no rows in this table
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Table of Solar Asset Conditions (Site Capacity > 5 MW DC)
Power Loss (%) - excl. Inverter Outages
Condition
0-0.3
Very Good
0.3-1
Good
1-2
Fair
2-4
Poor
4+
Very Poor
There are no rows in this table
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Solar PV Module Anomaly Severities

A PV module’s condition is based on the severity of the anomalies affecting it, and is summarized below.
Table of Solar PV Module Severities
Severity
Types of Issues
Applicable Anomaly Categories
1 – High Priority
Severe electrical faults (short circuits, forward bias)
Balance of System (BoS) electrical faults (inverter, combiner, sectional, string)
Optimizer/RSD failures
Broken glass or module structural damage
Fire risk (high-temperature hot spots)
Immediate safety risks or total production loss
Broken Module
Combiner Offline
Discoloration (If dark spots indicative of burns are present)
Forward Bias
Hot Spot - Critical
Inverter Offline
Missing Module
Module Offline
Multiple Cells (Intra-String Module Anomaly)
Multiple Cells - Critical
Optimizer/RSD Offline
Sectional Offline
Short Circuit
Short String
String Offline
Structure Module Fault
Submodule (with delta temperature > 25°C)
2 – Medium Priority
Balance of System (BoS) equipment faults
Degradation and medium performance decline
Mismatch heating issues
Moderate hot spots
Subsystem performance issues
Requires investigation or scheduled repair
Broken Module (when suspected but cannot be confirmed without additional in-field investigation)
Delamination
Hot Spot (with delta temperature 10-25°C)
Low Efficiency Section
Module Offline
Multiple Cells (with delta temperature 10-25°C)
Multiple Submodule
Racking Issue
Short Circuit (when suspected but cannot be confirmed without additional in-field investigation)
Submodule
Submodule Short Circuit
Tracker Fault
3 – Lowest Priority
Minor degradation
Shading or benign obstruction
Low-risk temperature anomalies
Cosmetic or non-impacting anomalies
Dummy module issues
Monitoring-only issues
PID / potential PID
Discoloration
Dummy Module
Hot Spot (with delta temperature <10°C)
Junction Box
Low Efficiency Section (underperforming string)
Multiple Cells (with delta temperature <10°C)
Occlusion
PID
Shading
Soiling
Vegetation
There are no rows in this table
⁠

Utilities Asset Conditions and Severities

Utility asset conditions and anomaly severities use the same severity scale, where asset conditions are typically assigned a condition that is equivalent to the most severe anomaly identified on the asset. A summary of the conditions and severities are shown below. Note: This summary may not be applicable if your organization has requested a custom severity scheme.
Utilities Asset Conditions
Severity / Condition
Description
Applicable Anomaly Categories
P10
Immediate hazard or active failure requiring dispatch as soon as possible. High potential for electrocution, arc flash, fire, outages, or public safety impact. Urgent Fix ASAP.
Energized wire down (primary/secondary/aerial/spacer/static/fiber); primary cable exposed below 8 ft; pole top split/decay or cracked poles with imminent failure; equipment actively leaking; vegetation directly contacting primary (phase-to-phase or phase-to-ground); conductor floating in a hazardous position.
P20
Serious issues that are not immediately hazardous but could become dangerous or cause outages if left unaddressed. Should be completed in the next scheduled maintenance window. Fix Within 14 Days
De-energized/abandoned wire down; pole steps < 8 ft; broken pole-top extension; excessive slack (depending on conductor type); minor equipment oil leaks; secondary cable exposed < 8 ft; broken guy wire bond; vegetation contacting secondary or neutral; structural brace issues where redundancy remains.
P30
Moderate deterioration or developing issues. Low near-term risk but will worsen if ignored. Included in typical annual maintenance planning. Fix Within 1 Year.
Poles leaning 3–4 ft; major decay/split in arms; slack or floating conductors (varies by type); flashed/tracking insulators; minor conductor hardware deterioration; incorrectly installed preform ties; blown fuses in non-critical areas; vegetation 1–2 ft from primary; vine growth in primary zone; minor guy wire or anchor issues.
P40
Low-severity, long-term maintenance items. Minimal immediate risk but should be corrected to prevent gradual system degradation. Fix Within 3 Years.
Minor conductor slack; pole top decay not near failure; loose bolts or hardware; damaged or loose ridge pins; broken bonds (depending on conductor type); minor rust on steel/tower components; vegetation 3–4 ft from primary; vine growth at secondary/neutral; minor hardware wear or damage.
IO
Documentation-only items requiring no corrective action. Used for tracking aging patterns, environmental effects, or non-impactful system anomalies. Information Only
Foreign attachments; minor pole shell damage; insulator chipping; cosmetic or non-critical contamination; bird/shell damage; dead vines; splices per span >3; rust or cosmetic wear; staging materials; tied-on insulators; non-critical hardware issues.
There are no rows in this table
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