 |
Precision Low-Resistance Component Shunt Measurement And Range Extension
제품 상세 정보:
| 원래 장소: | 둥관, 광동, 중국 |
| 브랜드 이름: | UCHI |
| 모델 번호: | UL.VDE, SGS, 한계, CQC, CSA.ISO.ROHS, CUL |
결제 및 배송 조건:
| 최소 주문 수량: | 5000개 |
|---|---|
| 가격: | 협상 가능 |
| 포장 세부 사항: | 크기 / 탄약 / 릴 |
| 배달 시간: | 5~7일 |
| 지불 조건: | 전신환, 페이팔, 웨스턴 유니온, 자금 그램 |
| 공급 능력: | 한달에 5000,000,000PCS |
|
상세 정보 |
|||
| 저전압: | E10=1.5~60V | Tmax: | 5.7 |
|---|---|---|---|
| 정전용량 범위: | 1pF-1000pF | 길이: | 25mm |
| 충동 삶: | 300 번 | 리드선: | 구리 와이어) |
| 포장: | SMD 릴 포장 | 외부 치수: | 5650 [2220],5.6x5.0mm |
| I보관 온도: | -55C ~ +125C | 종료 스타일: | 나사 |
| 무게: | 7.1g | 수분 장벽: | 에폭시 수지 |
| 보증: | 2년 | 상승 에너지 평가: | 28J |
| 소산 계수: | ≤0.2 | ||
| 강조하다: | low-resistance component shunt,precision measurement shunt,metal oxide varistor shunt |
||
제품 설명
Shunt
A shunt has different meanings in various fields. The most common is a precision low-resistance component in the electronics and power industry, used for high-current measurement and range extension.
I. Electronics / Power Industry (Most Common)
1. Core Definition and Principle
- Nature: A low-resistance, high-precision power resistor (in milliohm/microohm scale).
- Principle: Connected in series in the measured circuit. A high current produces a millivolt-level voltage drop (U=I×R), and the current is calculated indirectly by measuring the voltage.
- Typical specifications: Rated voltage drop is mostly 75mV/100mV. For example, 100A/75mV corresponds to a resistance of 0.75mΩ.
2. Main Applications
- High-current measurement: Used with millivoltmeters / multimeters to measure high DC current (from dozens to tens of thousands of amperes).
- Range extension: Connected in parallel with a low-range ammeter to shunt most of the current, allowing only a small portion to pass through the meter.
- Current sampling: Used for current monitoring and protection in BMS, motor control, power supplies, charging piles, and energy storage systems.
3. Key Parameters and Selection
- Rated current: Ranges from 5A to 15kA.
- Rated voltage drop: 60mV, 75mV, 100mV, 150mV, etc.
- Accuracy: 0.1%, 0.2%, 0.5%, 1%, etc.
- Material: Usually manganin alloy (low temperature coefficient, good stability).
- Heat dissipation: High-current applications require good heat dissipation to prevent accuracy loss due to temperature rise.
4. Advantages and Disadvantages
- Advantages: Simple structure, low cost, high DC accuracy, suitable for high currents.
- Disadvantages: Voltage drop loss, heat generation, non-isolated, and accuracy affected by reactance at high frequencies.
II. “Shunt” in Other Fields
1. Network Shunt (Traffic Replication / Load Balancing)
Copies / forwards network traffic for monitoring, auditing, intrusion detection, and load balancing.
2. Hydraulic / Pneumatic Shunt
Distributes fluid evenly to multiple outputs, used in hydraulic systems and lubrication systems.
3. Faucet Shunt (Household)
One-inlet, multi-outlet water splitter with independent switches, used for washing machines, showers, etc.
III. Usage Notes
- Must be connected in series in the measured circuit.
- Rated current should be higher than the actual maximum current (20% margin recommended).
- Secure wiring to reduce contact resistance; four-wire connection is recommended for high-precision measurement.
- Pay attention to heat dissipation to avoid overheating.
- Mainly used for DC or low-frequency AC; use with caution in high-frequency applications.
이 제품에 대한 자세한 내용을 알고 싶습니다