UHV-412 Circuit Breaker Analyzer(Graphite Contactor)

• 1,This instrument is an embedded industrial computer, the main board is based on CortexTM-A8, the main frequency is 1GHZ, the flash memory is 1GB, and the boot speed is only 16 seconds. Large 9-inch color screen, windows operating system, intuitive user-friendly operation interface, touch screen, support Chinese and English input, which is convenient for on-site operators.

• 2,high-speed thermal printer, convenient for on-site printing of test data.

• 3,The integrated operating power supply in the machine eliminates the need for on-site secondary power supply, which is convenient and quick to use. It can provide DC 6~270V adjustable power supply, current 20A. The operating voltage value of the opening and closing coil can be set arbitrarily, and the low voltage operation test of the circuit breaker can be done.

• 4,Equipped with linear sensor, rotation sensor, universal sensor, laser sensor (optional), bracket, special fixed multifunctional joint, installation is extremely convenient and simple.

• 5,Suitable for all types of SF6 switches, GIS combination electrical appliances, vacuum switches, and oil switches produced at home and abroad.

• 6,The switch action once, get all the data and graphics, the test data and graphics are displayed on the same screen, and the speed can be recalculated without retesting.

• 7,The host can store 30000 groups of current test data (expandable memory card), and the real-time clock in the machine is convenient for archiving.

• 8,Equipped with 2 USB ports, which can be connected to the mouse to operate the instrument, and the data can be directly saved to the U disk, uploaded to the computer for analysis and storage. RS232 interface online operation (optional), WIFI operation optional.

• 9,At the same time, it can measure 12 metal contact fractures, 6 main fractures and 6 auxiliary fractures, and 1 speed (optional for 3 speeds).

• 10,Contains the envelope curve, through the value tested by a switch, the standard envelope curve is generated for analysis and comparison, and the switch vibration frequency analysis can also be carried out.

• 11,The internal anti-interference circuit can satisfy the reliable use in 500KV substation.

• 1、Specialized Graphite Contact Measurement
  Equipped with dedicated graphite contact measurement units, the analyzer supports testing of Siemens graphite contact switches and other graphite contact breakers. It records dynamic resistance waveforms and accurately measures closing time, opening time, and synchronization of 3-6 graphite contact channels.
• 2、Multi-Channel Contact Testing
  Capable of simultaneously testing up to 12 main contacts, 6 auxiliary contacts, 6 pre-insertion resistor contacts, and 3-6 graphite contacts. Also supports double-ended grounding measurement for reliable testing in grounded conditions.
• 3、Comprehensive Timing & Synchronization Measurement
  Measures inherent opening/closing time, in-phase synchronization, phase-to-phase synchronization, bounce time and count, and provides detailed bounce waveforms for each contact.
• 4、Dynamic Resistance & Travel Analysis
  Captures dynamic resistance curves for arcing contacts and graphite contacts. Measures stroke (including over travel and rebound), contact clearance, and total travel. Generates travel-time, speed-time, and acceleration-time curves.
• 5、Integrated Adjustable DC Power Supply
  Built-in DC20~250V/20A adjustable power supply eliminates external power sources. Supports arbitrary setting of coil operating voltage values and automatic low-voltage operation tests of circuit breakers.
• 6、One-Action Full Data Acquisition
  A single switching operation captures all timing, travel, speed, coil current, and resistance data simultaneously, displayed with waveforms on one screen for immediate analysis.
• 7、Large Data Storage & Export Functions
  Stores up to 30,000 sets of test data with built-in real-time clock for archiving. Equipped with USB interface for direct data export to U disk, allowing upload to PC for further analysis and report generation.
• 8、Strong Anti-Interference Performance
  Designed with robust internal shielding and filtering circuits, the analyzer operates reliably even in 500kV and 800kV substation environments with severe electromagnetic interference.

• 1、Siemens Graphite Contact Switch Testing
  Dedicated to testing Siemens graphite contact circuit breakers, which feature semiconductor graphite arcing contacts combined with metallic current-carrying contacts. The analyzer accurately records the dynamic resistance variations during opening/closing operations that conventional testers cannot capture.
• 2、Substation Commissioning & Maintenance
  Used during commissioning of new circuit breakers and for scheduled maintenance programs across 110kV–800kV substations, verifying timing synchronization, travel characteristics, and contact wear status.
• 3、SF6 Switchgear & GIS Testing
  Suitable for SF6 switches, GIS combined electrical appliances, vacuum switches, and oil switches produced both domestically and internationally.
• 4、Fault Diagnosis After System Events
  Following short-circuit faults or abnormal operations, helps assess circuit breaker health by analyzing contact timing deviations, travel abnormalities, and vibration patterns to identify potential mechanical damage.
• 5、High-Voltage Laboratory & R&D Testing
  Applied in research institutions and testing laboratories for developing new circuit breaker designs, validating performance against standards, and conducting vibration fingerprint analysis.
• 6、Quality Control in Circuit Breaker Manufacturing
  Used by switchgear manufacturers for factory acceptance testing to verify mechanical and electrical parameters before shipment, ensuring each unit meets specification requirements.

• 1、What is a Graphite Contact Circuit Breaker Analyzer used for?
  It is a specialized instrument designed to test high-voltage circuit breakers that use semiconductor graphite arc-extinguishing contacts, commonly found in Siemens breakers. It accurately measures the opening/closing time, dynamic resistance, and other dynamic characteristics of graphite contacts, which ordinary metal contact analyzers cannot handle.
• 2、Why can't a standard circuit breaker analyzer test graphite contacts?
  Standard breakers use pure metal contacts, and their open/closed states can be judged by detecting the conduction or cut-off of electrical signals. Graphite contacts are semiconductor materials with dynamically changing contact resistance during the opening/closing process, so conventional electrical signal detection methods cannot accurately determine the exact moment of contact.
• 3、Can it test multiple types of contacts simultaneously?
  Yes, a comprehensive graphite contact analyzer can simultaneously test multiple contact types, including main metal contacts, graphite contacts, pre-insertion resistor contacts, and auxiliary contacts. Some models support simultaneous measurement of up to 12 main contacts and 6 graphite contacts.
• 4、Why do some circuit breakers use graphite contacts?
  Graphite contacts protect the metal main contacts. When the breaker operates, the arc is extinguished mainly by the graphite part, preventing the arc from directly burning the metallic dynamic and static contacts, thereby extending the service life of the contacts.
• 5、Is this analyzer suitable for field use?
  Yes, these analyzers are designed for both laboratory and field use. They feature built-in switch operation power supplies (DC20-250V, 10A), a large touchscreen display, USB data export, and support for all types of breakers including SF6, GIS, vacuum, and oil breakers.

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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