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AJZK-3 Transformer short circuit impedance tester
The low-voltage short-circuit impedance test is the most direct method to identify whether the transformer has been impacted by mechanical force during transportation or installation or short-circuit current during operation, and to check whether its windings are deformed. It is of great significance to determine whether the transformer can be put into operation. One of the basis for whether the transformer should be disassembled and inspected.
The low-voltage short-circuit impedance tester is suitable for low-voltage impedance testing of power transformers (single-phase or three-phase) at the factory, handover, pre-testing and overhaul. It is a rapid testing instrument to check whether the transformer has winding deformation.
- Main features
- The instrument has single-phase impedance, three-phase impedance, zero-sequence impedance (star with neutral point) measurement functions, as well as empty and load measurement functions.
- The instrument has two power modes: internal power supply and external single-phase voltage regulator.
- The instrument's voltage and current testing ranges are wide and highly accurate.
- It adopts 7.0-inch touch screen and is easy to operate.
- Built-in large-capacity non-volatile memory can store 160 sets of data.
- Built-in high-speed micro thermal printer can print measurement data.
- Built-in high-precision clock displays time in real time.
- With U disk storage function.
- Technical indicators
- Technical parameters
Voltage range: 15V ~ 500V (PT expandable), accuracy: ± (reading × 0.2% + 0.05% (range))
Current range: 0.5A ~ 15A (internal), accuracy: ± (reading × 0.2% + 0.05% (range))
0.5A～50A (external) (can be expanded by CT), accuracy: ±(reading×0.2% +0.05%(range))
Impedance range: 0～100%
Power factor: 0.02 ＜ cosΦ ＜0.1, accuracy: ± (reading × 1.0% + 0.05% (range))
cosΦ ≥0.1, accuracy: ±(reading×0.5% +0.05%(range))
Frequency measurement: 45～65Hz
Resolution: 5 significant figures
Host size: 405mm×330mm×180mm
Host weight: 9.5kg
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Conditions of useAmbient temperature: -10℃～50℃Environmental humidity: ≤85℅RHWorking power supply: AC220V ±10%
