Insulation Performance
Evaluation
Insulation Performance
Evaluation
TECHNICAL OVERVIEW
Through On/Offline Data
Heavy Electric Equipment Condition Analysis System
It provides integrated management of offline insulation diagnosis test results and online partial discharge monitoring results.
We provide an optimal solution by analyzing trends and artificial intelligence of offline data.
Prevent failures during operation through online partial discharge monitoring.
ON-LINE TEST
Online Test Assessment
For online test evaluation, we install an Online PD sensor on each machine and measure the machine data in real time.
PACT-Alliance online test evaluation monitors and warns of partial discharge trends and provides expert-level automatic analysis results.
Online Sensor Installation
High Voltage Rotating Machine Online Insulation Diagnosis
All High voltage rotating machine deteriorate as the number of years of service increases, and voids created by deterioration cause partial discharge during operation.
The state of the device can be grasped through trend management of the location and amount of partial discharge during operation.
Online Partial Discharge Analysis
Online Partial Discharge Applicable Fields
OFF-LINE TEST
Offline Test Assessment
Specialists directly visit the site and conduct insulation integrity tests of heavy electric equipment (generators, motors, and transformers).
High Voltage Rotating Machine Offline Insulation Diagnosis
In the High voltage rotating machine insulation system (mica-epoxy), voids are created/growth inside the insulator as the operating time elapses, and eventually the insulation is broken.
Through regular testing, the deterioration process is identified, and maintenance such as insulation reinforcement and rewinding is recommended before insulation breakdown.
Insulation Test Equipment
Generator Standards
| Test Items | Test voltage | Good criterion |
Megger[GΩ] | DC 5㎸ | 0.1 or more |
PI | DC 5㎸ | 2.0 or more |
ΔI[%] | E | 5.0 or more |
Δtanδ[%] | E | 2.5 or more |
PD[pC] | E/√3 | less than 30,000 |
6.6[㎸] Motor Standards
| Test Items | Test voltage | Good criterion |
Megger[GΩ] | DC 5㎸ | 0.1 or more |
PI | DC 5㎸ | 2.0 or more |
ΔI[%] | E | less than 8.5 |
Δtanδ[%] | E | less than 6.5 |
PD[pC] | E/√3 | less than 10,000 |
TECHNICAL OVERVIEW
ON-LINE TEST
Online Insulation Diagnosis
OFF-LINE TEST
Offline Insulation Diagnosis
Test Items | Megger[GΩ] | PI | ΔI[%] | Δtanδ[%] | PD[pC] |
Test voltage | DC 5㎸ | DC 5㎸ | E | E | E/√3 |
Good criterion | 0.1 or more | 2.0 or more | 5.0 or more | 2.5 or more | less than 30,000 |
Test Items | Megger[GΩ] | PI | ΔI[%] | Δtanδ[%] | PD[pC] |
Test voltage | DC 5㎸ | DC 5㎸ | E | E | E/√3 |
Good criterion | 0.1 or more | 2.0 or more | less than 8.5 | less than 6.5 | less than 10,000 |