Where does charge accumulate through the insulation?
Charge profile under DC stress
Performance Testing · Electrical & Electrochemical
Space-Charge Measurement
Map charge accumulation and decay through dielectric thickness under controlled electrical and thermal stress.
- Price
- from£240 per sample, excl. VAT
- Turnaround
- 7 working days Preparation and scope dependent
- Available platforms
- Doble PEA system
- Typical outputs
- Charge-density profileTime-resolved accumulation or decayField-distribution estimate where justifiedVoltage, temperature and calibration record
Why this service
What Space-Charge Measurement can help you understand
Space-charge measurement, commonly by pulsed electro-acoustic methods, estimates charge-density profiles through an insulating specimen. Voltage, temperature, thickness, electrode contact and calibration…
How quickly is charge injected, transported or dissipated?
Polarisation and depolarisation sequence
How do field, temperature or ageing change the charge profile?
Temperature or ageing comparison
Choose the scope
Start from the question, not the tool
The method, preparation route and reporting depth depend on what you need to decide.
Charge profile under DC stress
Where does charge accumulate through the insulation?
- Best used when
- Where does charge accumulate through the insulation?
- Typical result
- Charge-density profile
- Preparation note
- Declare biological hazards and confirm fixation, dehydration, temperature and disposal requirements.
Polarisation and depolarisation sequence
How quickly is charge injected, transported or dissipated?
- Best used when
- How quickly is charge injected, transported or dissipated?
- Typical result
- Time-resolved accumulation or decay
- Preparation note
- Confirm the applicable standard, dimensions, loading direction and number of replicates.
Temperature or ageing comparison
How do field, temperature or ageing change the charge profile?
- Best used when
- How do field, temperature or ageing change the charge profile?
- Typical result
- Field-distribution estimate where justified
- Preparation note
- Confirm power, connections, operating state, access restrictions and permitted disassembly.
Common outputs
A result package matched to the decision you need to make
Fields, conditions, processing and file formats are confirmed before work begins.
Charge-density profile reported with the agreed units, sample reference and measurement conditions.
Time-resolved accumulation or decay supplied in a labelled format suitable for direct sample or condition comparison.
Field-distribution estimate where justified provided with the processing basis and quality checks agreed during technical review.
Voltage, temperature and calibration record included when selected in the confirmed reporting scope.
Sample requirements
What to provide before work begins
Provide representative, clearly labelled samples and identify the decision, feature or comparison that matters.
| Suitable sample | Submission requirement | Planning note |
|---|---|---|
| Biological / soft material | Provide fixed, preserved or otherwise stabilised material in the agreed container and medium. | Declare biological hazards and confirm fixation, dehydration, temperature and disposal requirements. |
| Test coupon / specimen | Provide labelled specimens prepared to the agreed geometry, orientation and surface condition. | Confirm the applicable standard, dimensions, loading direction and number of replicates. |
| Device / assembly | Provide a complete labelled device or assembly with drawings, interfaces and operating limits. | Confirm power, connections, operating state, access restrictions and permitted disassembly. |
Objective: state the decision, comparison or acceptance criterion the work must support.
Handling and access: declare hazards, instability, confidentiality, file constraints or special logistics before dispatch or transfer.
Questions and answers
Common planning decisions
Short answers to issues that can change preparation, scope, timing or interpretation.
Is the test destructive?
It can be non-destructive within safe fields, but high-voltage stress may alter or damage the specimen.
What is the typical turnaround?
Typical turnaround is 7 working days after sample acceptance and method confirmation.
Configure the service
Send the information needed to scope Space-Charge Measurement correctly
- Sample form, material, dimensions and quantity
- Feature or decision the result must address
- Required comparison, acceptance criterion or reference
- Preferred output and reporting depth