SXBP Variable-Frequency Series Resonance AC Withs | RFQ Sourcing Details

The SXBP variable-frequency series resonance test system is designed for on-site AC withstand testing of electrical equipment in substations and power plants. The stated test scope covers equipment rated from 10 kV through 500 kV or below, subject to selection of a suitable system configuration.

Listed test objects include XLPE and other power cables, power transformers, generators, GIS, high-voltage switchgear, circuit breakers, busbars, insulators, bushings, CT/PT equipment, motors, and power capacitors.

Supported configuration details The listed SXBP systems use an AC power source, exciting transformer, resonant reactors, and a capacitive voltage divider. Published configurations have a 20–300 Hz test-frequency range.

Modular reactor arrangements allow reactors to be connected in series or added to adjust system voltage and capacity for the test object. Available listed configurations include SXBP-27/54/108-108, SXBP-54/108/216-216, SXBP-65/130/260-520, SXBP-45/90/135/180/270-270, and SXBP18/36/54.

The equipment is described as computer-controlled with an LCD display. The screen provides real-time test data, operating status, and procedural steps, and test results can be printed. Listed protection functions include overcurrent, overvoltage, IPM, and discharge protection.

The reactor construction is described as dry-type epoxy cast, with low temperature rise at rated load. Depending on the supplied configuration, a 220 V or 380 V single-phase source can be used for field operation.

Configuration examples The SXBP-27/54/108-108 configuration is listed with a 10 kW power source, a 10 kW exciting transformer, four 27 kV/1 A reactors, and a 120 kV divider.

Its stated example test objects include a 31,500 kVA/35 kV transformer, 35 kV circuit breakers, busbars and insulators, up to 2,000 m of 10 kV 300 mm² cable, and up to 500 m of 35 kV 300 mm² cable.

The SXBP-54/108/216-216 configuration is listed with 15 kW source and exciting-transformer units, four 65 kV/2 A reactors, and a 300 kV divider. The SXBP-65/130/260-520 configuration uses listed 30 kW source and exciting-transformer units, six 45 kV/1 A reactors, and a 200 kV divider.

Actual suitability depends on the required test voltage, cable capacitance or equipment load, test duration, and the intended reactor connection.

Procurement questions to confirm Before ordering, the buyer should provide the exact test object, rated voltage, required withstand voltage and duration, cable conductor area and length where applicable, estimated capacitance, site input supply, and required test standard.

Confirm the final reactor quantity and ratings, divider range, excitation-transformer rating, control and printing functions, included accessories, package dimensions and weight, calibration documentation, and the configuration-specific operating procedure.

The source information contains inconsistent warranty statements of one year and two years. The binding warranty period, scope, exclusions, remote or onsite support, and responsibility for travel or service expenses should therefore be confirmed in the purchase contract.

Buyers should also confirm the applicable conformity documents and test reports for the exact supplied model rather than assuming that general company-level statements apply to every configuration.