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Precision Low-Resistance Component Shunt Measurement And Range Extension
Detail produk:
| Tempat asal: | Dongguan, Guangdong, Tiongkok |
| Nama merek: | UCHI |
| Nomor model: | UL.VDE,SGS,REACH,CQC,CSA.ISO.ROHS,CUL |
Syarat-syarat pembayaran & pengiriman:
| Kuantitas min Order: | 5000 buah |
|---|---|
| Harga: | dapat dinegosiasikan |
| Kemasan rincian: | Massal/Amunisi/Gulungan |
| Waktu pengiriman: | 5-7 HARI |
| Syarat-syarat pembayaran: | T/T, Paypal, Western Union, Uang gram |
| Menyediakan kemampuan: | 5000.000.000PCS Per Bulan |
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Informasi Detail |
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| Tegangan Rendah: | E10=1,5~60V | Tmax: | 5.7 |
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| Rentang kapasitansi: | 1pF-1000pF | Panjang: | Ф25mm |
| KEHIDUPAN IMPULS: | 300 kali | Kawat Timah: | kawat tembaga timah) |
| Sedang mengemas: | Kemasan Gulungan SMD | Dimensi eksternal: | 5650 [2220],5.6x5.0mm |
| Suhu penyimpanan: | -55 ℃ ~ +125 ℃ | Gaya Penghentian: | Baut |
| Berat: | 7.1g | Penghalang kelembaban: | resin epoksi |
| Jaminan: | 2 tahun | Peringkat Energi Lonjakan: | 28J |
| Faktor Dissipasi: | ≤0.2 | ||
| Menyoroti: | low-resistance component shunt,precision measurement shunt,metal oxide varistor shunt |
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Deskripsi Produk
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.
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