Why Should Temperature Rise Performance Be a Key Focus for Industrial Connectors?
Background：
Temperature rise value and performance are unavoidable technical parameters for connectors, especially high-current connectors where temperature rise directly impacts safety. What are the requirements for connector temperature rise testing, and how is it conducted? Let’s explore!
Why Focus on Industrial Connector Temperature Rise Performance?
Temperature rise performance is a critical indicator of connector safety and reliability. Abnormal or excessive temperature rise may cause performance degradation or safety hazards during long-term use.
Key Risks:
①Safety Hazards:When temperature rise exceeds 80K, insulation carbonization may cause short-circuit fires.Overheating can compromise grounding protection, leading to electric shock risks.
② Reduced Lifespan:Every 10°C increase in temperature rise halves connector lifespan.Prolonged overheating reduces contact pressure, causing contact failure.
③ Structural Damage:Sustained high temperatures deform internal insulators and plastic housings, weakening structural integrity.Solder joints may develop defects.
Connector Temperature Rise Testing Essentials
|
No. |
Item |
Content |
|
1 |
Test Name |
Load/Temperature Rise Test |
|
2 |
Purpose |
Evaluates thermal dissipation, heat resistance, material thermal conductivity, and temperature changes to verify compliance with standards. |
|
3 |
Parameters |
- Ambient: Room temperature or 40°C- Current: Rated current- Max. temp. rise after stabilization: • ≤30K (rated current <50A) • ≤50K (rated current ≥50A)- Test points: Terminals, male/female contacts, housing |
|
4 |
Standard |
GB/T 34989-2017 Section 6.16 (China National Standard) |
|
5 |
Method |
- Connect all terminals in series to form a circuit.- Apply identical current for ≥4 hours.- Ambient temperature: 25±5°C.- Measure temperature rise against allowable limits. |
|
6 |
Equipment |
Programmable DC Power Supply / Touchscreen Thermal Data Logger |
Load/temperature rise tests must strictly comply with GB/T 34989-2017. Testing requires: ✅ Professionally calibrated equipment ✅ Technician supervision ✅ Results meeting specified limits This ensures operational safety and reliability in practical applications.