One,Summary  Described

The JBC-II Type Relay Protection Tester is the latest verification device successfully developed by our company. The instrument utilizes advanced power supply technology for its internal AC/DC voltage and current sources, achieving a leading level in domestic circuit design, component selection, panel layout, and internal structural design. The instrument boasts comprehensive functions, high-quality materials, clear test project data, and simple operation, making it an ideal choice for the power relay protection department.First.Select equipment.

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1、 Work Conditions:

（1) Working Power: AC220V+10%  50Hz

（2) Working Environment: Temperature: -10℃ to 40℃

                  Humidity:≤85%

（3) Atmospheric Pressure: 86-106 Kpa

2、 Output Power:

（1) Line Voltage: 0~220V/3A

（2) AC Current: 0~100A/7.5V

                0～20A/25V

                0～5A/5V

（3). Direct Current Voltage: 0～220V/3A

（Direct Current: 0-20A/25V

（5) Setpoint Output: DC24V, DC48V, DC110V, DC220V 

3、 Performance Metrics:

（1) Current and Voltage Meters: 4¹/₂Please provide the Chinese content that needs to be translated into American English.

（2) Digital Millisecond Stopwatch: 0～99.9999s

4、 Feature:

（1) Measuring Relays: Capable of measuring the start value, return value, and return coefficient of current and voltage relays.

（2) Time Relay: Measures start values, return values, and action time.

（3) Intermediate Relay: Measures the startup value, return value, holding value, and operating time of intermediate relays with both startup and holding coils.

（4) Reclosing Relay: Capable of performing capacitor charging tests, charging time, reclosing time, and intermediate component tests.

（5) Differential Relay: Capable of performing DC excitation tests, braking characteristics tests, and voltage-amperage characteristic tests.

（6) Various other non-standard relays.