BWR-04CTH Transformer Winding Thermometer
Introduction
Transformer winding thermometer (hereinafter referred to as thermometer) is a specialized instrument used to measure the temperature of large power transformer windings. It is composed of an improved converter based on a pressure thermometer, installed in the host meter, and equipped with an xmz digital temperature display.
Ordering Code
Main Technical Parameters
- Working conditions: ambient temperature -40-55 ℃, relative humidity<95%.
- The thermometer can operate normally under vibration conditions with a frequency of 50-120Hz and an amplitude of 0.2mm (vertical direction).
- Protective performance: The waterproof and dustproof performance of the thermometer meets the requirements of IP55 in GB4208-84. Simultaneously meeting the moisture resistance and mold resistance of general purpose tropical electrical products in JB839-74 standard.
- Temperature measurement range: 0-150 ℃
- Accuracy level: 2.0
- Contact action error: ± 4 ℃, switching difference: 6 ± 2 ℃
7, Temperature bulb size is D14 × 120mm, installation thread M27 ×2
- The set value of the temperature control switch is adjustable within the range of 0-150 ℃, with 4 switches inside.
- Instrument time constant of thermometer<30S
- The time constant of the electric heating element is about 9 minutes
- Temperature rise characteristic curve of electric heating elements
- Capillary length: 5m
| Model | Secondary rated current of transformer current transformer Ip(A) | Output CurrentIs（A） | Adjusting Line Ends K | Equivalent impedance |
| BWR-04CA | 5>Ip>3 | 32-38%X Ip | 3 | |
| 24-32%X Ip | 4 | |||
| 15-24%X Ip | 5 | |||
| 10-15%X Ip | 6 | |||
| BWR-04CB | 3>Ip>2 | 50-60%X Ip | 3 | |
| 40-50%X Ip | 4 | |||
| 28-40%X Ip | 5 | |||
| 17-28%X Ip | 6 | |||
| BWR-04CC | 2>Ip>1 | 75-90%X Ip | 3 | |
| 60-75%X Ip | 4 | |||
| 40-60%X Ip | 5 | |||
| 25-40%X Ip | 6 | |||
| BWR-04CD | 1>Ip>0.61 | 150-180%X Ip | 3 | |
| 120-150%X Ip | 4 | |||
| 100-120%X Ip | 5 | |||
| 50-100%X Ip | 6 |
XMZ-Y Digital Temperature Display Instrument
Main technical parameters
- Working conditions: ambient temperature 0-50 ℃, relative humidity<85%;
- Display method: digital display
- Display range: 0-150 ℃
- Display error: ± 1 ℃
- Working power supply: AC: 220V ± 10%, frequency 50-60Hz
- External dimension: 160mm × 80mm × 150mm
- Installation method: disc mounted, opening size: 152mm × 76mm
- Output signal: 4-20mA standard current signal or 0-5V standard voltage signal.