GE JVM-5 670X9 电压互感器

Description

关于“General Electric Ge JVM-5 670X9 Voltage Transformer 1500VA 14400V-AC”，目前没有直接公开的详细技术规格或产品文档可供全面解析，但可基于行业常识和类似型号的通用特性提供分析框架：

1. 型号命名规则与参数含义

JVM-5：通常表示电压互感器(Voltage Transformer)的系列型号，其中“5”可能代表设计版本或性能等级。

670X9：可能是内部批次号、材料代码或特定配置标识，具体含义需查阅GE官方技术手册。

1500VA：额定容量为1500伏安，表示该互感器在额定工况下可输出的最大视在功率。

14400V-AC：一次侧额定电压为14400伏交流电，适用于中高压电力系统。

2. 技术特性推测

绝缘等级：14400V额定电压下，绝缘等级通常为BIL(Basic Impulse Level)75kV或更高，需满足IEC/IEEE相关标准。

精度等级：电压互感器精度通常为0.3级或0.5级，具体取决于应用场景(如计量或保护)。

频率范围：标准工频50/60Hz，部分型号可能支持宽频范围(如15-400Hz)。

温升限制：根据IEC 60076标准，温升限值通常为80K(油浸式)或100K(干式)。

3. 应用场景

电力传输与分配：用于变电站、工业配电系统，将高电压转换为低电压(如120V)供仪表、继电器使用。

计量与保护：配合电能表、差动保护装置，实现精确计量和故障快速隔离。

测试与校准：在实验室环境中作为标准电压源，校准其他测量设备。

4. 注意事项

安装环境：需符合IP防护等级(如IP20及以上)，避免潮湿、腐蚀性气体环境。

负载匹配：二次侧负载阻抗需与互感器设计匹配，避免过载导致精度下降或损坏。

维护要求：定期检查绝缘油性能(油浸式)或绝缘电阻(干式)，确保长期可靠性。

5. 替代型号与兼容性

若需替代，需确认新互感器的变比、容量、精度与原型号一致，并满足系统短路容量要求。

示例替代型号：GE JVM-5系列其他容量规格(如2000VA)或同等级品牌(如ABB、Siemens)的类似产品。

6. 技术文档与支持

建议联系GE官方技术支持(GE Grid Solutions)获取详细技术手册、安装指南及认证文件。

关键认证：IEEE C57.13、IEC 60044、ANSI C57.13。

总结

该型号电压互感器属于中高压电力系统关键设备，需严格遵循电气安全规范进行选型、安装与维护。如需具体技术参数或应用方案，建议提供更多背景信息(如系统电压等级、负载类型)以便进一步分析。

Regarding the “General Electric Ge JVM-5 670X9 Voltage Transformer 1500VA 14400V-AC”, there are currently no detailed technical specifications or product documents directly available for comprehensive analysis. However, an analysis framework can be provided based on industry knowledge and the general characteristics of similar models

1. Model naming rules and parameter meanings

JVM-5: usually refers to the series model of voltage transformers, where “5” may represent the design version or performance level.

670X9: It may be an internal batch number, material code, or specific configuration identifier. Please refer to the official GE technical manual for specific meanings.

1500VA: The rated capacity is 1500 volt ampere, indicating the maximum apparent power that the transformer can output under rated conditions.

14400V-AC: The rated voltage on the primary side is 14400 volts AC, suitable for medium and high voltage power systems.

2. Speculation on Technical Characteristics

Insulation level: At a rated voltage of 14400V, the insulation level is usually BIL (Basic Impulse Level) 75kV or higher, and must meet relevant IEC/IEEE standards.

Accuracy level: The accuracy of voltage transformers is usually 0.3 or 0.5, depending on the application scenario (such as metering or protection).

Frequency range: Standard power frequency 50/60Hz, some models may support a wide frequency range (such as 15-400Hz).

Temperature rise limit: According to IEC 60076 standard, the temperature rise limit is usually 80K (oil immersed) or 100K (dry type).

3. Application scenarios

Power transmission and distribution: used in substations and industrial distribution systems to convert high voltage into low voltage (such as 120V) for use by instruments and relays.

Measurement and protection: Combined with electric energy meters and differential protection devices, achieve precise measurement and rapid fault isolation.

Testing and Calibration: As a standard voltage source in a laboratory environment, calibrate other measuring equipment.

4. Precautions

Installation environment: It must comply with the IP protection level (such as IP20 or above) and avoid humid and corrosive gas environments.

Load matching: The impedance of the secondary load should be matched with the transformer design to avoid accuracy degradation or damage caused by overload.

Maintenance requirements: Regularly check the insulation oil performance (oil immersed) or insulation resistance (dry type) to ensure long-term reliability.

5. Alternative models and compatibility

If replacement is required, it is necessary to confirm that the transformation ratio, capacity, and accuracy of the new transformer are consistent with the prototype number, and meet the system’s short-circuit capacity requirements.

Example alternative models: GE JVM-5 series with other capacity specifications (such as 2000VA) or similar products of the same level brand (such as ABB, Siemens).

6. Technical documentation and support

It is recommended to contact GE Grid Solutions for detailed technical manuals, installation guides, and certification documents.

Key authentication: IEEE C57.13、IEC 60044、ANSI C57.13。

Summary

This model of voltage transformer belongs to the key equipment of medium and high voltage power systems, and must strictly follow electrical safety regulations for selection, installation, and maintenance. If specific technical parameters or application plans are required, it is recommended to provide more background information (such as system voltage level, load type) for further analysis.