A protective relay that detects internal faults in transformers and prevents serious accidents!
The "Buchholz relay" is a relay installed between the main tank of a transformer and the conservator to protect the transformer by detecting internal faults. It features a first contact (minor fault contact) that operates based on the amount of gas generated by minor faults, and a second contact (major fault contact) that operates based on the rapid flow of oil caused by major faults. 【Features】 ■ Protective relay that prevents serious accidents ■ Detects internal faults ■ Equipped with minor fault contact and major fault contact *For more details, please refer to the catalog or feel free to contact us.
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basic information
【Specifications】 ■ Contact capacity: DC 125V 0.25A, AC 250V 5A ■ Insulation resistance: DC 500V 100MΩ or more (between terminal and case) ■ Dielectric strength: AC 2000V for 1 minute (between terminal and case) ■ Pressure resistance: 0.3 MPa ■ Contact specifications ・ Switch type: Micro switch ・ Light failure contact (operating gas volume): 225±25cm3 to 450±25cm3 ・ (ALARM) Number of contacts: 1 contact ・ Heavy failure contact (operating oil flow rate): 1.0±0.15m/sec ・ (TRIP) Number of contacts: 1 contact ■ Cable outlet screw size: G 3/4 ■ Installation angle: 0 to 5° upward angle on the conservator side ■ Protection rating according to the outer casing of electrical machinery: IP65 *For more details, please refer to the catalog or feel free to contact us.
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For more details, please refer to the catalog or feel free to contact us.
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Company information
Shinagawa Instrument Manufacturing Co., Ltd. is a company that primarily sells pressure gauges, metal thermometers, and relays for pressure, temperature, oil level, and liquid flow. We also conduct contract testing, performing vibration tests under the specified conditions discussed in advance with our staff. You can use our testing equipment at reasonable rates, so please take advantage of our contract testing and equipment usage services.
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