ST-3/PT600 | XT Series Accessory
Three-phase primary line voltage clamps to perform a Primary/Secondary Analysis or PT Ratio Test on CT and PT current transformers
Connecting the ST-3/PT-600 measurement probe to the PT port on the front panel of the ST-3/XT3 transformer-rated site tester makes it possible to perform the Primary/Secondary Analysis Test or PT Ratio Test on the instrument’s transformers.
- Three-phase primary line voltage clamps
- Auto-detection and electronically compensated
- Accuracy 0.1%
- Voltage range up to 600 V.
- Color-coded 4-mm banana jack
- Dolphin clamps included
- Cable is 15 feet long
- Extension can be purchased separately
SKU: 9030-3315
Connecting the ST-3/PT-600 measurement probe to the PT port on the front panel of the ST-3/XT3 Transformer-Rated Site Tester makes it possible to perform the Primary/Secondary Analysis Test or PT Ratio Test on the instrument’s transformers.
- Three-phase primary line voltage clamps
- Auto-detection and electronically compensated
- Accuracy 0.1%
- Voltage range up to 600 V.
- Color-coded 4-mm banana jack
- Dolphin clamps included
- Cable is 15 feet long
- Extension can be purchased separately
SKU: 9030-3315
ST-3/PT600 | Installation
The ST-3/PT-600 accessory is used while testing a performance of a transformer’s primary and secondary current or conducting a PT Ratio analysis with the Probewell Connect 2.0 utility software while using the ST-3/XT3 Transformer-Rated Site Tester.
The Primary/Secondary Analysis Test performs a CT Ratio analysis on the transformer’s primary and secondary current using the customer load. The secondary voltage or current reading is done directly at the meter base installation while the primary reading is done using the accessories. With both measurements, the real transformer ratio can be calculated and compared to the nameplate ratio.
The measurement results show the raw data from the device readings for each line:
• U primary: RMS primary voltage
• U secondary: RMS secondary voltage
• PT Ratio: Transformer ratio of the PT calculated from primary and secondary measurements
• PT Ratio error: Error percentage on the measurement ratio compared to the nameplate ratio
The ST-3/PT-600 accessory is used while testing a performance of a transformer’s primary and secondary current or conducting a PT Ratio analysis with the Probewell Connect 2.0 utility software while using the ST-3/XT3 Transformer-Rated Site Tester.
The Primary/Secondary Analysis Test performs a CT Ratio analysis on the transformer’s primary and secondary current using the customer load. The secondary voltage or current reading is done directly at the meter base installation while the primary reading is done using the accessories. With both measurements, the real transformer ratio can be calculated and compared to the nameplate ratio.
The measurement results show the raw data from the device readings for each line:
• U primary: RMS primary voltage
• U secondary: RMS secondary voltage
• PT Ratio: Transformer ratio of the PT calculated from primary and secondary measurements
• PT Ratio error: Error percentage on the measurement ratio compared to the nameplate ratio
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