RTCS0050 RESI | Alldatasheet
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No.: E18017Version: V3 Date: 2022/12/26 C&B Electronics Shenzhen Co.,Ltd| | resi@cbeureka.com | Tel:0755-83981080/83981010 www.resistor.today Precision Shunt, Rated Current 50A, Standard Tolerance 0.1% Low Thermal EMF, TCR ±20ppm/℃ Shunt works at very high current, so the temperature of surface rises sharply which will cause the change of resistance. For precision measurement, we must choose shunts which are with low TCR, low PCR and low Thermal EMF. Resi launched the precision shunt series which can reach 0.1% 10% to 100% of rated current. The maximum TCR is ±20ppm/℃ in the range of -20℃ to +120℃. Besides, the shunt has extreme stability with low PCR and low Thermal EMF. Measured at the center of metal strip Measured at the center of metal strip Measured at the center of metal strip When reach heat balance, disconnect the circuit and test EMF Measured temperature range of -25℃ to +120℃, +25℃ Ref. 10%-100% Rated Current Test 2.25 rated voltage for 5 seconds 1.2 rated voltage for 2 hours, +25°C Optimum Surface Temperature Operating Temperature Range Maximum Surface Temperature Thermal EMF TCR Current Coefficient Short Time Overload Long Time Overload Thermal Equilibrium Time Performance Test Test Method Standard +30℃~+90℃ - 40℃~+140℃ +140℃ ＜0.05 μV/℃ ≤±20ppm/℃ ≤±5ppm/A △R≤±0.1% ＜5min △R≤±0.05% ‘Measured at the center of metal strip when resistance won t change ±20ppm/℃RTCS0050B050Z00 ±0.1% 1mΩ 50mV 50A 60A 194±10g ±20ppm/℃RTCS0050B075Z00 ±0.1% 1.5mΩ 75mV 50A 60A 193±10g Dimensions（mm） Model TCRToleranceResistance Rated CurrentOutput Voltage Max. Current Weight Model TCRToleranceResistance Rated CurrentOutput Voltage Max. Current Weight 46.3±0.5 80.3±0.5 99.3±1 19.5±0.5 21±0.5 50A 50mV/ 2-M3 2-M8 230101001 2-M3 2-M8 46.3±0.5 80.3±0.5 19.5±0.5 21±0.5 50A 75mV/ 99.3±1 230101001 Precision DC Ammeter Shunt RTCS0050
No.: E18017Version: V3 Date: 2022/12/26 C&B Electronics Shenzhen Co.,Ltd| | resi@cbeureka.com | Tel:0755-83981080/83981010 www.resistor.today Custom Service for Your Application (CTS Service) Reverse Installation Advice Minimum Operating Current Maximum Operating Current Working Current Curve Final Product Final Product Working Condition Design Lifetime Note Minimum Ambient Temperature Maximum Ambient Temperature Ambient Temperature Curve Installation Method Heat Dissipation Condition Installation Notes or Picture Each shunt requires precise trimming of value. The main challenge in the trimming process is to reach tight tolerance both at 10% of rated current and 100% rated current. It is known that the temperature curve of Manganin material is not linear, so to adjust the surface temperature of metal strip to the optimum surface temperature is the only way to achieve tight tolerance . CTS is a free customized trimming service. It will estimate customer's working condition and the average surface temperature of the shunt, and then provides the best resistance for precision measurement. CTS can significantly improve the tolerance. Each CTS product will be assigned with a unique identification code. We will provide test reports for every CTS product for free. If you are interested in CTS service, please contact our sales engineers with below required information. 电压采样接入口 电流接入口 Reverse Installation Example Current (1) During the installation of the shunt, it shall be ensured that the copper head is in close contact with the bus bar, and the contact area between the copper head and the bus bar shall be as large as possible. If conditions permit, the size of the bus bar shall be as large as possible and the bus bar shall be clean. Voltage Terminal (2) According to the IEEE standards, the operating current should not be higher than 2/3 of the rated current under the normal conditions. (3) Derating is required when the ambient temperature is higher than 40 °C to avoid damaging the shunt. (4) Air cooling, water cooling, increased physical size, and installation of heat sinks can be used to reduce operating temperature. (5) It is recommended to wear gloves when installing the shunt to prevent oil contamination. (6) The surface of the copper bar used for inst- alling the shunt shall be smooth and clean. It is recommended that the surface be plated with nickel or tin to reduce the contact resistance. (7) Recommended Installation Torque No. Bolt Size Recommended Torque (N.m) 1 M3 0.4~0.8
2 M8 10~15
Precision DC Ammeter Shunt RTCS0050
No.: E18017Version: V3 Date: 2022/12/26 C&B Electronics Shenzhen Co.,Ltd| | resi@cbeureka.com | Tel:0755-83981080/83981010 www.resistor.today -700ppm -600ppm -500ppm -400ppm -300ppm -200ppm -100ppm 0ppm 0min 2min 4min 6min 8min 10min 12min RTCS0050系列分流器通电阻值变化情况 RTCS0050B050Z00 5A RTCS0050B050Z00 50A RTCS0050B075Z00 5A RTCS0050B075Z00 50A T C S 0 0 5 0 Example Identification Code:RTCS0050B050Z00 ( RTCS 50A ±0.1% 50mV ) B 0 5 0 Z 0 0R B=±0.1%0050=50ARTCS 050=50mV 075=75mV Output Volatge Identification Code ToleranceRated CurrentSeries *60mV, 100mV can be customized. Part Number Information *Under different heat dissipation conditions and different applied copper bar sizes, there will be some differences in the change of shunt on resistance. The above operating conditions are under normal temperature with 100mm² copper wire;For customized test, please contact us to provide detailed operating conditions. Resistance Shift of Loaded RTCS0050 Series Shunt Resistance Shift Loaded Time Curve of the Resistance of Loaded Shunt Storage Instructions (1) The minimum package is 1 piece; (2) The inner part is sealed and the outer part is customized packing box. Packaging Instructions (1) The shunt shall be stored at a temperature of 5 to 35 ° C, humidity<60% RH, and the humidity shall be kept at a low level; (2) The shunt shall be protected from direct sunlight; (3) The shunt shall be stored in a clean and dry environment, free of harmful gases (hydrogen chloride, sulfuric acid, hydrogen sulfide, etc.); (4) Special gloves shall be worn for storage and handling to reduce the risk of surface oxidation; (5) Under the above conditions, the shunt can be stored for at least 1 year. Precision DC Ammeter Shunt RTCS0050