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PDT9 - Partial Discharge Tester

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PDT9 - Partial Discharge Tester
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Description

Description

PDT9 handheld PD tester is our technical teams throughout years of detection experiences of high-voltage equipment partial discharge online detection and positioning.

The system is equipped with composite TEV sensors, UHF sensor, high-frequency current transformer and high sensitivity ultrasonic sensors to collect high voltage equipment internal partial discharge signal. With the feature a multi-level detection frequency reduction technique it could reduce the discharge frequency of the signal, while using digital high-speed AD conversion circuit to complete the signal, and through digital signal processing, adaptive filtering.

It’s equipped with interference signal processing mode to ensure the reliability of the monitoring data. Through different signal acquisition of the partial discharge of high voltage equipment can produce different charged fast detection condition of the equipment. The equipment can be installed in the detection of the running state of the equipment, the normal operation of the equipment does not have any effect, evaluation for the staff in a timely manner on the switch cabinet the running state, greatly improving the reliability of equipment, safety and effectiveness.

 

Specification

Requirements for instrument measurement parameters

 

composite TEV measurement

 

Sensor:

 

capacitance;  

Resolution:

1dB; error: + 1dB;

Detection bandwidth:

5~70MHz; pulse / cycle maximum: 655;

 

Threshold adjustment range:

 

3 ~ 57dB.

 

high frequency current transformer

 

Detection frequency band:

 

10kHz to 30MHz signal

Detection sensitivity:

 

10pC

transmission mode:

50 coaxial cable

ultrasonic measurement

 

Measuring range:

 

 -7dB V ~ 68 dB V;

resolution:

1dB;

Error:

 

±1dB

 

sensor sensitivity:

 

 -65dB(0dB = 1volt/μbar

 SPL RMS);

 

 

Sensor center frequency:

 20 ~ 50kHz;

sensor diameter:

 

less than 50mm;

 

Heterodyne frequency:

 

38.4kHz.

UHF sensor

Detection:

 

300MHz ~ 1.5GHz band signal

transmission mode:

 50 coaxial cable

Detection sensitivity:

 

 1dB

gain:

> 65dbm

hardware requirements

 

Shell

 

with a protective shell, protection level should reach or better than IP53;

 

Connector

 

earphone socket, low voltage DC charger input, external ultrasonic sensor input;

 

Host weight

 

no more than 3kg;

 

Display:

 

LED display, and can display the battery status

 

supply power requirements

 

Internal battery

 

equipped with rechargeable battery, the battery voltage is low, with automatic shutdown function;

 

Battery duration

 

single channel mode is greater than 6 hours, multi channel mode is greater than 3 hours;

 

Battery charge

 

can use 220V frequency power supply charge, charge time is not more than 8 hours;

 

Battery charge

 

IP54.