See every operation on one time axis

Circuit Breaker Timing Test Equipment

Q: What information should be sent for a timing analyzer quotation?

Send breaker manufacturer and model, voltage class, interruption medium, mechanism and control voltage, poles and breaks, contact map, operation sequences, required outputs, trigger method, sensor geometry, travel span, leads, reporting requirements, calibration documents and delivery schedule.

Compare circuit breaker analyzers for opening and closing time, pole synchronism, contact bounce, travel, velocity and coil behavior. Start with the contact map, operating sequence and sensor arrangement your approved test method requires.

Compare Timing Analyzers Send Breaker Details

Opening and closing sequencesTiming plus motionWaveforms and records

Operation trace / O-C-O

Contact

Travel

Coil

ttime

Δtsynchronism

s(t)travel curve

Define the required outputs

Six mechanical-characteristic results can come from one controlled operation

The analyzer must capture the correct contacts and motion at the correct trigger point. Specify the outputs first, then verify that channels, sensors and operation controls support them.

Opening and closing time

Measure defined time intervals between the command or trigger and the relevant contact transition.

Δt

Pole synchronism

Compare contact transitions within a pole and between phases using a clearly documented contact map.

Contact bounce

Capture bounce time, count and waveform where the procedure calls for closing or opening behavior review.

Travel and overtravel

Record total travel, opening distance, overtravel, overshoot and rebound using a suitable sensor and reference.

m/s

Velocity

Calculate average, opening, closing or maximum speed over the interval defined by the approved method.

Coil behavior

Link trip or close coil current and operating voltage evidence to the same breaker operation where required.

Wrindu timing and motion routes

Compare a field analyzer with a comprehensive switch-characteristics platform

Both models target dynamic breaker analysis. RDGC-8A emphasizes established timing, travel, coil and operating-voltage functions; RDGC-8C expands the interface, storage, sensor options and integrated measurement scope.

Field timing and travel

RDGC-8A

Digital Circuit Breaker Analyzer

For timing, reclosing sequences, bounce, travel, speed, coil-current and action-voltage work across supported vacuum, SF6 and oil breakers.

0.1 msPublished time resolution

20.00 m/sPublished speed span

DC 0–270 VPublished adjustable output

1,000 setsPublished storage

Review RDGC-8A product details →

Comprehensive dynamic analysis

RDGC-8C

High-Voltage Switch Characteristics Comprehensive Tester

For an expanded platform with touchscreen operation, multiple sensor routes, large storage, integrated operating supply and optional advanced functions.

0.01 msPublished resolution in lower timing ranges

9-inchPublished touchscreen

30,000 setsPublished storage

200 APublished dynamic-resistance output

Review RDGC-8C product details →

Model-selection note: published specifications support early comparison only. Confirm contact-channel requirements, timing range, trigger method, travel sensor, motion calculation, internal operation supply, dynamic-resistance option, accessories, language, calibration documents and report format with Wrindu.

Specify the analyzer architecture

Four design choices determine whether the analyzer fits the breaker

01 / CHANNELS

Map every contact

Count main and auxiliary contacts, poles, breaks per pole and closing-resistor channels before choosing a tester.

02 / TRIGGER

Define the event origin

Choose internal, external, manual or sensor triggering according to the breaker control circuit and test objective.

03 / MOTION

Match the sensor

Select linear, rotary, acceleration, universal or optional laser sensing against mechanism access and required travel.

04 / RECORD

Preserve the setup

Store asset, operation, channel map, sensor position, waveform, calculated outputs and review status together.

Compare published capability

Match the breaker requirement to the analyzer route

Use this matrix to create a shortlist. Request the latest technical sheet and verify the final configuration against the exact breaker and procedure.

Selection field	RDGC-8A	RDGC-8C	Why it matters
Timing route	Published 64000.0 ms range with 0.1 ms resolution	Multiple published timing ranges; 0.01 ms resolution in lower ranges and external triggering to 200 s	The expected operation and trigger must sit inside the useful range and resolution.
Motion route	Acceleration, rotary and linear sensors published; spans for vacuum, SF6 and oil breakers	Linear, rotary, universal and optional laser sensor routes published	Sensor mounting and repeatable reference are as important as the numerical resolution.
Operating supply	Published DC 0–270 V / 30 A adjustable output	Published DC 6–270 V adjustable output; short-time current depends on output voltage	Confirm control voltage, current demand, duty and safe isolation before using an internal supply.
Data workflow	Published 1,000-result storage, USB and built-in printing	Published 30,000-result storage, touchscreen, thermal printing, USB and optional interfaces	Field volume and reporting workflow determine the value of storage and interfaces.
Expanded functions	Timing, bounce, travel, speed, coil current and action-voltage work	Includes published closing-resistance and 200 A dynamic-resistance capabilities plus optional measurements	Only pay for integrated functions that the asset list and approved method will use.
Product details	Open RDGC-8A	Open RDGC-8C	Final quotation should identify base unit, sensors, leads, brackets, cases, software and documents.

Motion starts with mounting

Choose the travel sensor from the mechanism and reference point

A sensor must fit the available motion, mounting geometry and calculation method. Confirm the physical installation before treating a published span as proof of compatibility.

Linear sensor

For direct displacement where a stable linear mounting path and suitable stroke are available.

Rotary sensor

For mechanisms where angular motion can be coupled and converted through the authorized method.

Acceleration sensor

For selected breaker arrangements when the supported algorithm and mounting practice are understood.

Universal / laser option

For specialized access or non-contact measurement routes supported by the analyzer configuration.

Plan the operation sequence

The test sequence determines channels, triggering and record structure

Open

Trip command to defined contact transition and motion response.

Close

Close command, contact touch, bounce and travel response.

O-C

Open-close

Combined operation with the required dead-time record.

C-O

Close-open

Operation sequence defined by the breaker and approved procedure.

O-C-O

Reclosing

Multi-event sequence requiring clear timing and current-free intervals.

Make waveforms traceable

Build the timing file before energizing the analyzer

One breaker operation needs more than a graph

Keep the waveform attached to the exact asset state, operation, channel map, sensor position and calculation settings used to create it.

Asset and pole mapAs-found / after-serviceTrigger and sequenceSensor and referenceControl voltageOperator and review

Define contacts and labels

Map every main, auxiliary and closing-resistor channel to pole, phase and break.

Fix the trigger and command

Record how the operation begins and whether the analyzer or an external circuit supplies the command.

Document motion geometry

Capture sensor type, mounting point, direction, reference and calculation interval.

Compare controlled states

Only compare results after confirming asset condition, operation, setup and software definitions are equivalent.

Keep the search and test boundary clear

Timing analysis is one part of breaker condition evidence

This page owns timing and motion equipment

Use it to compare analyzer channels, sequences, triggers, sensors, timing ranges, travel, speed, bounce, coil functions and data handling.

RDGC-8A RDGC-8C

Adjacent questions stay on adjacent pages

Maintenance kit planning remains on the maintenance page; static contact/loop resistance remains on its dedicated collection; the parent page continues to explain general circuit breaker testing.

Maintenance equipment Circuit breaker testing

Prepare a useful inquiry

Send the breaker contact map and motion requirement

Breaker and operation

Manufacturer, model, voltage class and interruption medium
Mechanism, control voltage, poles and breaks per pole
Main, auxiliary and closing-resistor contact map
Required O, C, O-C, C-O or O-C-O operations
Required time, synchronism, bounce, travel, speed and coil outputs

Analyzer and deliverables

Trigger mode and internal operation-supply requirement
Sensor type, travel span, mounting access and brackets
Lead lengths, connectors, cases and site-power conditions
Storage, printer, USB, software and report fields
Language, calibration documents, options and delivery schedule

Circuit breaker timing tester FAQ

Questions to settle before selecting an analyzer

What does circuit breaker timing test equipment measure?

It records contact transitions and mechanical motion during defined breaker operations. Depending on the model and configuration, outputs can include opening and closing time, pole synchronism, bounce, reclosing intervals, travel, opening distance, overtravel, rebound, velocity, coil current and operating voltage.

How do RDGC-8A and RDGC-8C differ?

RDGC-8A provides established timing, reclosing, bounce, travel, speed, coil-current and adjustable operating-voltage functions with published storage for 1,000 result sets. RDGC-8C adds a 9-inch touchscreen, larger published storage, expanded sensor and interface options, closing-resistance and dynamic-resistance functions. Confirm the exact configuration needed for the breaker.

How many timing channels does a breaker analyzer need?

The answer comes from the breaker contact map. Count poles, breaks per pole, main and auxiliary contacts, closing-resistor contacts and any simultaneous signals required by the procedure. A general channel number is not enough unless every channel is mapped to the actual breaker and operation sequence.

Which travel sensor should be used?

Choose a sensor from the mechanism motion, accessible mounting point, required span, direction, repeatability and calculation method. Linear and rotary sensors suit different geometries; acceleration, universal or laser options require analyzer support and a controlled installation practice. Confirm the sensor and brackets before procurement.

What information should be sent for a timing analyzer quotation?

Send breaker manufacturer/model, voltage class, interruption medium, mechanism and control voltage, poles and breaks, contact map, operation sequences, required timing and motion outputs, trigger method, internal supply need, sensor geometry, travel span, leads, storage/reporting requirements, calibration documents and delivery schedule.

Compare breaker analyzers against the actual contact and motion map

Send Wrindu the breaker details, operation sequence, required timing outputs, travel geometry, trigger method and reporting workflow. The technical team can help compare RDGC-8A, RDGC-8C and suitable sensors.

Request Timing Analyzer Support →

Technical parameters shown here are based on public HVTesters product information reviewed on 29 August 2026. Confirm the current model, specifications, sensors, accessories, calibration documents and approved test method before purchase or use.

How to specify breaker timing, motion and analyzer channels

Build the timing specification from contacts, events and motion

A circuit breaker timing tester does not simply “measure milliseconds.” It observes defined electrical contact changes and mechanical movement relative to a trigger. A reliable procurement specification therefore begins with the breaker contact map, operation sequence and sensor geometry, then adds the timing range, analyzer power, data handling and accessories needed in the field.

1. Define the exact start and stop events

“Opening time” and “closing time” can be ambiguous when the record does not identify the initiating command and the contact event used to stop the interval. Before comparing analyzer resolution, document the definitions required by the breaker manufacturer, owner procedure or project authority.

Start event

Trip or close command, coil energization, auxiliary-contact change, external trigger or another procedure-defined reference.

Controls the time origin

Stop event

Main-contact separation, contact touch, auxiliary-contact transition or a motion threshold defined by the authorized method.

Controls the reported interval

Combined event

O-C, C-O or O-C-O sequences require dead times, current-free intervals and individual operations to remain distinguishable.

Controls sequence analysis

2. Turn the breaker diagram into a channel map

The required number and type of channels come from the breaker, not from a preferred analyzer model. Count every contact that must be observed simultaneously and label it before the test. Multi-break arrangements and closing resistors can increase the requirement beyond a simple three-phase view.

Signal group	Information to collect	Analyzer capability to confirm	Record label
Main contacts	Poles, phases, breaks per pole and simultaneous measurement requirement	Number of compatible main-contact timing channels	Phase / pole / break identity
Auxiliary contacts	Contact designation, normal state and required transition	Dry/voltage contact handling and separate auxiliary channels	52a, 52b or site designation
Closing resistors	Breaker construction and resistor-contact sequence	Dedicated channels or supported closing-resistance measurement	Resistor contact and pole
Coil current	Trip/close coil circuit, expected current and observation point	Current input range, resolution and waveform capture	Trip coil / close coil
Travel signal	Moving part, direction, span and mechanical reference	Compatible sensor input and selected calculation method	Sensor, axis and mounting point

3. Choose the trigger route that fits the control circuit

Internal triggering can simplify field setup when the analyzer supplies the breaker operation command. External triggering can preserve the site's own control circuit. Manual or sensor triggering may support manually operated or unusual switches. The selection must follow the isolation plan and authorized operating procedure.

Internal trigger

The analyzer initiates the operation. Confirm output voltage, current, duty, wiring, interlocks and whether a separate secondary supply is permitted.

Convenient but must be compatible

External trigger

The existing control system or another source initiates the event while the analyzer records the response.

Preserves site control route

Manual / sensor trigger

Used only where the analyzer and method support a manually operated switch or a special event detector.

Confirm before procurement

4. Select motion measurement as a complete mechanical chain

Travel and velocity results depend on the moving point, mechanical linkage, sensor, mounting bracket, direction, zero reference, span and calculation interval. Two tests with different mounting geometry may not be comparable even when they use the same analyzer.

Breaker-side information

Accessible moving part and safe mounting surface
Linear or angular motion and expected travel
Direction, clearance and mechanism enclosure limits
Manufacturer reference point or conversion rule
Required travel, overtravel, rebound and speed outputs

Analyzer-side confirmation

Linear, rotary, acceleration, universal or laser sensor support
Sensor range, resolution and connection
Included brackets, rods, adapters and cables
Software setting and calculation interval
Method for storing the mounting/reference information

Practical rule: request photographs or drawings of the mechanism and mounting area with the inquiry. A sensor specification without a mounting plan is not yet a usable travel-measurement solution.

5. Separate time resolution from overall measurement suitability

A smaller resolution number does not automatically make one analyzer the correct choice. Review the useful range, accuracy statement, trigger route, contact-channel architecture, noise environment, sampling and the complete operation sequence. The field question is whether the system can capture the specified event with traceable uncertainty and repeatable setup.

Specification field	Why it matters	What to ask
Timing range	Must cover individual operations and long combined sequences	Which range applies under internal and external triggering?
Resolution and accuracy	Resolution is display granularity; accuracy describes closeness under stated conditions	What accuracy applies in the required range and channel configuration?
Simultaneous channels	Synchronism comparison requires aligned observation of required contacts	How many main, auxiliary and resistor contacts can be captured together?
Waveform export	Calculated values may not preserve all event detail	Can raw or plotted traces, settings and identifiers be exported with the report?
Environmental operation	Display, connections and timing stability must suit field temperature and interference	What operating limits and interference controls are published?

6. Compare RDGC-8A and RDGC-8C by workflow

Both analyzers address high-voltage breaker mechanical characteristics, but their operating interface and expansion routes differ. Use the comparison to decide what requires confirmation; do not treat every published function as automatically included in every quotation.

RDGC-8A starting route

Timing, reclosing, bounce, travel and speed
Coil current and adjustable action-voltage functions
Acceleration, rotary and linear sensor routes
Published 1,000-set storage and USB
Confirm exact channels, sensors and accessories

RDGC-8C starting route

9-inch touchscreen and expanded data interface
Published 30,000-set storage
Linear, rotary, universal and optional laser sensing
Published closing- and dynamic-resistance functions
Confirm base configuration and optional modules

7. Preserve first-trip and after-service states separately

Operating a breaker before measurement can change lubrication distribution, mechanism temperature or stored-energy condition. If first-trip evidence is required, the test plan must capture the first authorized operation without conditioning the mechanism beforehand. After-service records should be labeled separately and should identify adjustments or components changed.

As-found

Record the initial authorized state, elapsed idle time where relevant and any pre-test operations that occurred.

Protects baseline context

After adjustment

Identify the exact work completed, mechanism settings and repeated operation used for the new measurement.

Supports before/after review

Return-to-service

Keep the reviewed waveform and calculated results attached to the authority's final disposition.

Preserves decision traceability

8. Use this technical inquiry structure

The following fields give the supplier enough context to compare timing channels, internal operation power, sensor hardware and reporting options.

Suggested breaker timing analyzer inquiry

Breaker: manufacturer/model, voltage class, interruption medium, mechanism and control voltage.
Contacts: poles, breaks per pole, main contacts, auxiliary contacts and closing-resistor arrangement.
Operations: required O, C, O-C, C-O, O-C-O and first-trip sequences.
Outputs: time, synchronism, bounce, travel, opening distance, overtravel, rebound, speed, coil current and action voltage.
Trigger/power: internal, external, manual or sensor trigger; internal operation-supply voltage/current requirement.
Motion: mechanism photos/drawings, moving point, linear/angular travel, expected span, preferred sensor and mounting space.
Deliverables: storage, waveform export, USB, printer, software, report fields, language, calibration documents, accessories and delivery schedule.

For the complete maintenance package, see Circuit Breaker Maintenance Test Equipment. For the broader method overview, use Circuit Breaker Testing. Send the completed technical fields to Wrindu for configuration support.