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Summary of Contents for CHINT NB2LE-40ZT
- Page 1 NB2LE-40ZT Residual Current Operated Circuit Breaker User Instruction 英文使用说明书 0463L1655 浙江正泰电器股份有限公司 2023 年 7 月...
- Page 2 Safety Warning 1) It is strictly prohibited to install the product in an environment containing flammable and explosive gases, wet condensation, and wet hand operation. 2) It is forbidden to touch the conductive part of the product during the operation of the product. 3) It is forbidden to test the product performance by using the method that the live wire directly touches the grounding device, or the live wire is directly shorted to the neutral wire.
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Page 3: Main Technical Parameters
2 Normal use, installation, transportation and storage conditions 2.1 Service conditions: - Working environment temperature: - 25 ℃~+70 ℃, and the average working temperature for 24 hours shall not exceed+35 ℃; - Altitude: the altitude of the installation site shall not exceed 2000m; - Pollution level: Level 2;... - Page 4 Operating short-circuit breaking capacity (Ics) 6000A Rated residual making and breaking capacity (I 500A △ Electrical life 4000 times Mechanical life 10000 times ℃ Reference temperature ≤3s Closing time (tc) Remote control ≤2s Opening time (to) Setting value of The default value is AC280V, which can be overvoltage action (Uvo) Overvoltage recovery The default value is AC250V, which can be...
- Page 5 Check whether zero sequence transformer Continuous self-test and circuit board leakage module work normally Leakage self inspection Power off self inspection, Check whether zero sequence transformer, self inspection completed circuit board leakage module and circuit automatic reclosing breaker tripping mechanism work normally Note: "Can be opened or closed"...
- Page 6 4 Communication function 4.1 Communication interface The circuit breaker has one RS485 communication interface and Bluetooth interface. RS485 interface: -Support baud rate 1200,2400,4800,9600,19200; -Verification method: no verification/even verification; -Default configuration: 19200, even parity check. 4.2 communication protocol The circuit breaker adopts Modbus RTU communication protocol. The default communication address of the circuit breaker is 03.
- Page 7 Table 5 Control Signal and Status Control Table of Circuit Breaker Mode selection Phase line control Initial state Status after action remarks switch voltage signal position Send Opening and automatic closing Closing allowing closing command Opening and allowing Manual automatic nothing Closing closing...
- Page 8 down and Opening and not Opening and not remains in allowing closing allowing closing the original state Closing Closing In case of overload, short circuit Automatic Opening and allowing and other nothing Closing or manual closing faults, the circuit breaker acts to open In case of overvoltage/...
- Page 9 voltage Or ≤ recovers, the Uvu→ circuit Uvur breaker automaticall y closes Send Remote Opening and Opening and allowing Manual closing control fails allowing closing closing command to close Send the Remote Manual opening Closing Closing control fails command to open Auto →...
- Page 10 7 Outline and installation dimensions ■ Overall dimensions (unit: mm) Figure 1 Boundary Dimensions of Circuit Breaker ■ Communication port Figure 2 Installation Position of Communication Interface...
- Page 11 8 Installation, commissioning and operation 8.1 Before installation and use: check whether the circuit breaker mark is consistent with the working conditions used;Before power on, the circuit breaker shall be operated several times, and its mechanism action shall be flexible, reliable, and free of blocking.See Figure 3 for the circuit breaker closing/opening status indication and the "Automatic"/"Manual"...
- Page 12 8.3 Disassembly Diagram Fig. 5 Disassembly Diagram 8.4 It is applicable to copper wire connection. See Table 7 for wire selection and Figure 6 for wiring mode and stripping length. Table 7 Requirements for Cross sectional Area of Copper Conductor Cross sectional area of copper conductor(mm Rated current In(A) 16、20...
- Page 13 Figure 6 Wiring Mode and Stripping Length Note: Before power on, check whether the wiring is correct and firm, verify the flexibility of the handle action, and detect the status indication modes of manual and automatic. 9 Maintenance The circuit breaker shall be checked regularly during operation. When the circuit breaker fails to trip and open (such as overload, short circuit, overvoltage, undervoltage, phase loss, underfrequency, etc.), the fault shall be eliminated first, and then the circuit breaker shall be closed manually to restore power supply.
- Page 14 10 Fault Analysis and Troubleshooting Table 8 Example of Fault Analysis and Troubleshooting Fault phenomenon Cause analysis Exclusion method Whether there is short circuit at the load end Troubleshooting Failure of operating mechanism Replace product The rated current of the circuit breaker does Replace product specifications not match the load current Observe whether the indicator light...
- Page 15 Press the test button Button failure Replace product and the product does Leakage protection function fails Replace product not act 11 Warranty period, environmental protection and other legal provisions 11.1 Warranty period Under the normal storage and transportation conditions, and the product package or product itself is in good condition, the warranty period of the product is 36 months from the date of production.
- Page 16 品牌管理部提供封面形象， 包括 商标 CHINT CHINT 如下内容设定在封面的排列位 正泰文化元素 “闪电符号” 置的版式 按产品使用说明书技术文件修 版本号 NO:2023.07 NO:2023.07 订年月确定 空留位置， 将来的产品实际维护 产品二维码 情况标识 产品型号系列 NB2LE-40ZT NB2LE-40ZT 产品单位填写使用说明书实际 所涵盖产品系列型号、名称。本 Residual Current Operated 产品名称 剩余电流动作断路器 行只印刷型号 Circuit Breaker 符合标准号 产品实际所符合的国际标准 IEC/EN 61009-1 IEC/EN 61009-1 集成系统业务部组织按技术文 封面标题 使用说明书...
- Page 17 Residual Current Operated Circuit 产品名称 剩余电流动作断路器 Breaker 使用说明书 封底标题 User Instruction 浙江正泰电器股份有限公 Zhejiang CHINT Electrics Co., Ltd. 生产者（制 司 Add: No.1, CHINT Road, CHINT 造商）名 地址：浙江省乐清市北白 Industrial Zone, North Baixiang, 统 一 总 部 海 外 最 新 信 称、地址...
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