TN1W3 Intelligent Universal Circuit Breaker|Zhejiang Baituan Electric Technology Co., Ltd.

Product Details

1、Applications and Scope of Use

TN1W3 Series Intelligent Universal Low Voltage Circuit Breakers (hereinafter referred to as circuit breakers) are suitable for AC 50Hz, rated voltage up to 690V and below, rated current 400A~6300A in the power distribution network, used to distribute power and protect the lines and power supply equipments from the hazards of overloading, undervoltage, short-circuit, single-phase grounding and other faults. The circuit breaker has intelligent protection function and precise selective protection, which can improve the reliability of power supply and avoid unnecessary power outage. Meanwhile with open communication interface, it can be four remote to meet the requirements of centralized control center and automation system. The circuit breaker has an impulse withstand voltage of 8000V at an altitude of 2000 meters above sea level (corrected according to standards for different altitudes, not exceeding 12000V). The circuit breaker without intelligent disconnector and sensor can be used as isolator, labeled as "".

The circuit breaker conforms to GB14048.2 Low-voltage Circuit Breakers for Low-voltage Switchgear and Control Equipment and IEC947-2 Circuit Breakers for Low-voltage Switchgear and Control Equipment and other standards.

2、Model Meaning and Classification

2.1 Model Number and Meaning

2.2 Classification

2.2.1 According to the installation method.

a.Fixed

b.Drawer type

2.2.2 According to the number of points: three, four

2.2.3 According to the operation mode.

a. Electric operation

b. Manual operation (overhaul, maintenance)

2.3 Types of detent

Intelligent overcurrent controller, undervoltage instantaneous (or delayed) disconnectors, shunt disconnectors.

2.4 Intelligent overcurrent controller performance.

a. Intelligent controller is divided into: H-type (for communication), M-type (general intelligent), L-type (economic).

b. Overload with a long delay inverse time, short delay inverse time, fixed time, instantaneous function. It can be set by the user to compose the required protection characteristics.

c. Single-phase grounding protection function.

d. Display function: setting current display, action current display, each line voltage display (voltage display should be proposed at the time of ordering).

e. Alarm function: overload alarm.

f. Self-test function: overheating self-test, microcomputer self-diagnosis.

g. Test function: test the action characteristics of the controller.

3、Normal Operating Conditions and Installation Conditions

3.1 Surrounding air temperature

The upper limit value is not more than +40℃, the lower limit value is not less than -5℃, and the average value of 24h is not more than +35℃.

Note:The lower limit value is - 10 ℃ or - 25 ℃ working conditions, the user should be affirmed with the factory.

The upper limit value exceeds +40℃ or the lower limit value is lower than - 10℃ or - 25℃ working conditions, the user should consult with the factory.

3.2 The altitude of the installation site does not exceed 2000m.

3.3 Atmospheric conditions

Atmospheric relative humidity does not exceed 50% when the ambient air temperature is +409C, higher relative humidity is possible at lower temperatures, and the wet

The monthly average relative humidity of the month is 90%, while the average low temperature of the month is +25°C, taking into account that due to the temperature change occurs on the surface of the product.

condensation on the surface of the product due to temperature changes. The user should consult with the factory for any exceeding of the stipulation.

3.4 Protection class: IP30

3.5 Usage category: Class B or Class A

3.6 Installation category

Circuit breakers with rated working voltage 690V and below and undervoltage disconnectors, primary coil of power transformer are used for installation category IV;

Auxiliary circuits and control circuits are for installation category I.

3.7 Installation conditions

The circuit breaker shall be installed according to the requirements of this instruction manual, and the vertical inclination of the circuit breaker shall not exceed 5° (the inclination of the mining circuit breaker shall not exceed 15°).

4、Technical Data and Performance

4.1 The rated current of the circuit breaker is shown in Table 1 Table 1

4.2 The rated short-circuit breaking capacity and short-time withstand current of the circuit breaker is shown in Table 2, the circuit breaker flying arc distance for "zero" (i.e., no flying arc outside the circuit breaker) Table 2

5.1 Interlocking mechanism of circuit breakers (applicable to drawer type and fixed type)

5.1.1 Lever interlocking

Figure 5 (A) 3 vertically mounted circuit breakers interlocked with a lever. If 2 circuit breakers are interlocked only the upper breaker needs to be removed.