Introduction Continuous PD On-line Monitoring System for HV Cable Systems
The KCM-30 device (Cable Diagnostic Monitor) is used for on-line insulation monitoring up to 30 cables.
The KCM-30 device has effective collection of hardware and firmware techniques for noise rejection.
Built-in expert system (PD-Expert) automatically assesses partial discharges level and identify type of defect in cable insulation.
The PD-Expert system allows separating several identical defects in one cable.
Features
1. PD Diagnosis of HV cable systems
- Measures and analyzes the partial discharge generated from the defects in the cable insulation
2. PD fault localization of HV cable systems
- Locates the PD sources in cable systems using TDR method
System Configuration
Specifications
NO.
Item
Description
1
Number of cable lines
30 CH
2
Operating voltage of cable lines (kV)
> 3
3
Length of cable lines (km)
< 5
4
Max. length of sensor cables(m)
< 100
5
Frequency range (MHz)
0.5 ~ 10
6
Dynamic amplitude range (dB)
70
7
Power frequency phase resolution
7.5 °
8
PD location accuracy (%)
±1 (of cable length)
9
Temperature sensor (-50℃~150℃)
1, Pt-100
10
Humidity sensor (0~100%)
1, SHm-1
11
Communication interface
RS-485 / TCP Fiber Optic
12
PC interface
USB
13
Data Memory (MB)
256
14
Output relay
4 (250 V, 6 A)
15
Power supply
90~260 VAC, 50/60 Hz
16
Power consumption (W)
15
17
Operating temperature (oC)
-40 ~ 70
18
Dimensions (mm) / Weight (kg)
290 × 215 × 80 / 5
(*) The cable length can be available up to 4 km, but with twice as much measurement error.
