Partial Discharge Detector Penta-PD+ is an ideal partner for condition-based maintenance programs. Partial Discharge Detector Penta-PD+ incorporates all 5 types of online PD sensor technology. Information from multiple sensors gives Partial Discharge Detector Penta-PD the versatility to detect various type PD in variety of substation apparatus.

Detection Bandwidth 

1.TEV - Transient Earth Voltage , Range 3~100 MHz

2.UHF - Ultra High Frequency  300MHz~2000 MHz

3.UA – Ultrasonic 40  ~ 200 KHz


Measurement range 

1.UA: -90~80dB

2.TEV: -80~10dBm

3.UHF: -80~10dBm.


a) Ultrasonic sensor: 20~200(kHz); 

b) EV (Transient Earth Voltage) sensor: 5 ~ 100MHz; 

c) UHF sensor: 300~2000(MHz), with directional reception characteristic.