12kVA Power Frequency Withstand Voltage Test Equipment

Power frequency withstand voltage test equipment

1. Main features
     The CQSB series of high-voltage test transformers have the characteristics of small size, light weight, and strong versatility. In addition to the equipment widely used in various large and small high-voltage test chambers (stations), they are more suitable for various high-voltage electrical insulation tests on site. The test console together constitute a power frequency withstand voltage complete test device.

2. Scope of application
    Perform AC withstand voltage test for power system operating equipment, insulation performance test for insulation tools, and meet the requirements of 60kV power frequency withstand voltage test. This set of equipment is mainly used for 10kV switchgear withstand voltage test, discharge gap discharge voltage, and lightning arrester AC reference voltage test And rural distribution network transformer test, etc.
 

3. Conditions of use
    1) Altitude: ≤1000m
    2) Ambient temperature: -20℃～＋50℃
    3) Relative air humidity: ≤80%, no condensation
    4) Earthquake resistance: ≤8
    5) Ground horizontal acceleration 3.0m/s2, ground vertical acceleration 1.5m/s2
    6) The waveform of the power supply voltage is an actual sine wave, and the waveform distortion rate is less than 3%
    7) Set up a reliable grounding point, grounding resistance <0.5Ω
    8) Installation location: indoor and outdoor

4. follow technical standards
    GB 50150-2016 Electrical equipment installation engineering electrical equipment handover test standard
    Q/CSG1205019-2018 Power Equipment Handover Acceptance Regulations
    Part of GB 26861-2011 Electric Power Safety Working Rules for High Voltage Laboratory
    DL 5009.3-2013 Safety Work Rules for Electric Power Construction Part 3: Substation
    JB/T9641 test transformer
    GB10229 reactor
    GB1094.1～GB1094.5 Power Transformer
    GB/T.311.1 Insulation and coordination of high-voltage power transmission and transformation equipment
    GB/T16927.1 High Voltage Test Technology Part One General Test Requirements
    GB/T16927.2 High Voltage Test Technology Part 2 Measurement System
    GB7328 Sound level measurement of transformers and reactors
    GB/T509 Power Transformer Test Guide
    GB4208 enclosure protection level
    GB/T191 Packaging, Storage and Transportation Graphic Mark
    DL/T 848.2 General technical conditions for high voltage test equipment Part 2: Power frequency high voltage test equipment
    GB5273 Terminals for transformers, high-voltage electrical appliances and bushings
    GB/T11920 General technical conditions for centralized control devices for electrical parts of power stations
    IEC60-1 High Voltage Test Technology
    DL/T 846.1 General technical requirements for high voltage test equipment Part 1: High voltage divider measurement system

5. The composition of the complete set of equipment
    1) Inflatable AC test transformer CQSB(J)-12kVA/60kV/0.2kV 1 set
    2) 1 console (including voltage regulator) TC-12kVA/0.22kV
    3) Protection current limiting resistor BHR- 0.2A/0.6kΩ 1 pc

6. Overall technical parameters
    1) Rated capacity: 12kVA;
    2) Working power supply: 220V;
    3) Working frequency: 50Hz;
    4) Rated output voltage: 60kV (AC);
    5) Rated output current: 0.2A
    6) Insulation level: keep for 10 minutes under no-load 1.1 times the rated voltage, all parts are normal;
    7) Waveform: Sine wave
    8) Waveform distortion: <3%
    9) Running time: 5min continuous work under rated capacity;
    10) Temperature rise: the temperature rise of each component under rated operation conditions is ≤65K;
    11) High voltage stability, small random fluctuations, ≤1% when the power supply voltage changes ±10%
    12) The test transformer and the console are separated structures
    13) Equipment service life: more than 10 years;