Circuit Breaker Analyzer

Circuit Breaker Analyzer is a specialized instrument used for testing and diagnosing high-voltage circuit breakers, which protect equipment, power lines, and substations from faults such as short circuits, overloads, and voltage fluctuations. Circuit Breaker tester ensures the correct, safe, and efficient operation of the power system.

Circuit Breaker Analyzer can accurately measures the mechanical dynamic parameters of various high-voltage circuit breakers, including low-oil, high-oil, vacuum, and sulfur hexafluoride (SF6) types. Circuit Breaker tester is suitable for various high-voltage circuit breakers, including vacuum, SF6, and oil circuit breakers, as well as load switches, GIS grounding knife switches, contactors, relays, and air switches.

1.Wide Application & Multi-Contact Testing

Suitable for SF6, vacuum, oil switches, GIS, and special breakers. Tests up to 12 contacts (6 main + 6 auxiliary) in one operation, capturing time, bounce, speed, coil current/resistance, plus energy storage, low-voltage trip, and life test functions.

2.Large Display & Smart Analysis

7-inch color sunlight-readable screen with menu operation, one-key testing, and Chinese/English input. Displays 12-channel contact status, time, stroke, speed, and waveforms on one screen. Marks specified segment average speed on the stroke curve.

3.Integrated Safe Power Supply

Built-in DC20–270V adjustable power (20A) – no external power needed. Short-circuit protection stops output in 1ms with audible alert. Dual-circuit design allows testing even if one control circuit fails.

4.Flexible & Easy Sensors

Includes linear sensor (30–1000mm, length freely settable) and 360° rotation sensor with special multifunction mount – easy installation. No factory reprogramming needed when using different sensors.

5.Data Storage

Host stores up to 100 test groups with built-in real-time clock for easy archiving.

6.Multiple Data Export Interfaces

USB and RS232 ports. Save data to USB drive or upload to PC for analysis/printing. RS232 supports optional online PC operation.

7.Strong Anti-Interference

Internal anti-interference circuit ensures reliable operation even in 500kV substation environments.

1.Power transmission and distribution substations
2.Industrial plants: Ensuring safe operation in factories, refineries, and manufacturing facilities.
3.Renewable energy: Protecting solar power plants, wind turbines, and hydroelectric systems.
4.Railway and transportation systems: Ensuring reliable electrical operation in railway networks.

Circuit Breaker Analyzer works by first sending a control signal to the breaker's trip or close coil to initiate operation, then simultaneously measuring three key aspects: it applies a low DC voltage across each main contact to precisely record opening and closing times; it tracks a displacement sensor attached to the moving mechanism to calculate stroke and velocity; and it monitors the coil current waveform to detect mechanical anomalies like latch sticking or coil degradation, all of which together produce a complete report on the breaker's mechanical and electrical performance.

1. Ensure wiring well before using instrument firstly, in order to confirmuser & instrument's security.

2. Before using the instrument, please check whether the power supply is AC 220V, otherwise the instrument will be damaged.

3. Keep attention to safety on working instrument with internal DC 220V outlet.

4. Scrutinize the control wiring and strictly prohibit short out to avoid damaging the internal DC power or control contact, which is under circumstance of using the divide-shut brake of internal DC power control switch.

5. Confirm each part of fracture lines connecting well for fear that switch vibration influences test data.

6. Prohibit to open enclosure randomly while there has 220V voltage inside.

1.Circuit Breaker Analyzer is very accurate and valuable. Prevent dropping and impact during use. Try to operate in a cool and shady place to avoid prolonged exposure of the LED screen.

2. Store in a place where it is not in use, maintain at -10~40℃, with a relative humidity of less than 80%, good ventilation, and no corrosive air. In humid seasons, when not in use for a long time, power it on for about 30 minutes every month.

(1) Three-phase synchronism: refers to the maximum & minimum differentials of on-off three-phase separation (closing) switch.

(2) Same phase asynchronies: refers to 6 fractures or more switches, the time difference of separating (closing) brake to same phase fracture.

(3) Bounce time: refers to the accumulative time values, which is the interval from first contacting to completely contacting, of all contacts while in progress of closing, separating (bounce) brake when switch's moving & static contacts.

(4) Opening time: refers to the interval from separating brake dropping out with electrification to every polar arc contact separating, where the breaker is in closed position.

(5) Closing time: refers to the interval from closing circuit with electrification to every polar arc contact touching, where the breaker is in open position.

(6) Reclosing time: in the cyclic process of reclosing, it's the interval from opening to each polar contacts closing together.

(7) Instant separating (closing) velocity: refers to within some appointed time of opening/closing moving contact and static contact, or average velocity of a certain appointed stroke. Take 10ms for instance, to separating brake ,it's average velocity to separate brake within 10ms after separating. To closing brake, it's average velocity to close brake within 10ms before closing.

(8) Opening range: refers to the stroke of switch from divided state to instant touch of moving contact with static contact.

(9) The maximum velocity of opening (closing) switch: refers to the maximum instantaneous speed of opening (closing) switch, generally speaking, this value shall appear in this stroke or point, which is analyzed from velocity and stroke curve, while switch just opening or closing.

(10) Average velocity of opening (closing): refers to the ratio of stroke to time , where the switch moving contact exists in whole action.

We offer a one-year warranty and "Three-Guarantees" (repair, return, exchange) on all our products, with maintenance available throughout the equipment's service life. Quality issues within the warranty period are repaired free of charge. For damage caused by improper operation, we provide services at favorable prices. We welcome your suggestions and ask that you notify us of any changes to your contact information so we can serve you promptly. Your trust matters to us – and we are here to stay with you for the long run.

Wuhan UHV Power Technology Co.,Ltd. is an OEM manufacturer based in Wuhan, China, specializing in R&D, sales, and service of high-voltage testing equipment. Our product range includes resonant test systems, transformer testers, circuit breaker analyzers, relay protection testers, cable and oil testers, and DC battery testers-widely used in power projects, transportation, petrochemicals, mining, and water conservancy. We hold CE and ISO9001 certifications, serve clients across mainland China, and export to about 100 countries including Malaysia, Indonesia, Saudi Arabia, UAE, the US, Australia, Argentina, Chile, and Brazil. Our customers trust us for competitive products and strong technical support.

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