ERW1-2000 Universal Circuit Break

Purpose and scope of application

ERW1-2000 series intelligent universal circuit breakers (hereinafter referred to as circuit breakers) are suitable for distribution networks with AC 50Hz, rated voltage up to 660V (690V) and below, and rated current 400A~6300A. They are used to distribute electric energy and protect lines and power equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. The circuit breaker has intelligent protection function and precise selective protection, which can improve power supply reliability and avoid unnecessary power outages. At the same time, it has an open communication interface and can perform "four remote controls" to meet the requirements of the control center and automation system. The circuit breaker has a pulse withstand voltage of 8000V at an altitude of 2000 meters (corrected according to standards at different altitudes, and the maximum does not exceed 12000V).
The circuit breaker has an isolation function, which is represented by: "_/∣x―"
The circuit breaker complies with the standards: GB/T14048.2 "Low-voltage switchgear and controlgear low-voltage circuit breakers"
EC60947-2 "Low-voltage switchgear and controlgear circuit breakers"

Model meaning and classification

■Classification:
According to the installation method
a. Fixed type
b. Drawer type
According to the number of poles: three-pole, four-pole
According to the operation method
a. Electric operation
b. Manual operation (for inspection and maintenance)

■Tripper Type.
Intelligent controller, undervoltage instantaneous (or delayed)
Undervoltage Instantaneous (or Delayed) Tripper, Shared Excitation Tripper.

■Intelligent controller performance:
a. Intelligent controllers are divided into: H type (communication type), M type (ordinary intelligent type), L type (economic type);
b. It has overload long delay inverse time, short delay inverse time, fixed time, instantaneous function, which can be set by the user to form the required protection characteristics;
c. Single-phase grounding protection function;
d. Display function: set current display, action current display, main display of each line voltage (voltage display should be proposed when 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 intelligent controller.

Normal use and installation conditions

■Ambient air temperature
The upper limit does not exceed +40℃, the lower limit does not fall below -5℃, and the 24h average value does not exceed +35℃;
Note: The user should declare to our company when the lower limit is -10℃ or -25℃; the user should consult with our company when the upper limit exceeds +40℃ or the lower limit is below -10C or -25℃; the installation site should not exceed 2000m above sea level.
■Atmospheric conditions
The relative humidity of the atmosphere does not exceed 50% when the ambient air is +40℃, and higher relative humidity can be achieved at lower temperatures. The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is +25℃, taking into account the condensation on the product surface due to temperature changes. If the requirements are exceeded, please consult with our company.
■Protection level: IP30
■Pollution level: Level 3
■Use category: Class B or Class A
■Installation category
Circuit breakers and undervoltage releases with rated working voltage of 660V (690V) and below, the primary coil of the power transformer is used for installation category IV, and the auxiliary circuit and control circuit installation category is 1.
■Installation conditions
The circuit breaker should be installed according to the requirements of this manual, and the vertical inclination of the circuit breaker shall not exceed 5° (the inclination of the mining circuit breaker shall not exceed 15°)

Structural introduction

Technical data and performance

The rated current of the circuit breaker is shown in the table below

The rated short-circuit breaking capacity and short-time withstand current of the circuit breaker are shown in the table below. The arcing distance of the circuit breaker is "zero" (i.e. there is no arcing outside the circuit breaker)

Note: The breaking capacity in the table is the same for both upper and lower incoming lines.

The maximum power loss of the circuit breaker is 360W. The changes in the rated continuous current of the circuit breaker at different ambient temperatures are shown in the table below.

Intelligent overcurrent controller protection characteristics and functions
Controller overcurrent protection characteristics
a. The controller setting value Ir (I/In) and error are shown in the table below

b. Long-time overcurrent protection inverse time action characteristic I²T_L=(1.5l_r1) ²t_L, its action time of (1.05-2.0)I_r1 is shown in the table below, and its time error is +15%

Note: tL- setting time of long delay 1.5lr1, TL- action time of long delay.

c. Short-time delay overcurrent protection characteristics are shown in the table below

The short-time delay overcurrent protection is a time-limited protection. If the low multiple is required to be an inverse time-limited protection, its characteristic is designed as I²T_s= (8I_r1) ²t_s, t_s delay time; when the overload current is > 8I_r1, it is automatically converted to a time-limited protection characteristic. The time-limited protection characteristic is shown in Table 6. The time-limited protection error is ±15%.

d. The overcurrent tripping protection characteristics are shown in Figure 1, and the ground fault protection characteristics are shown in Figure 2.

Functions of M-type intelligent controller

a. Ammeter function
Displays the operating current and ground leakage current of each phase, normally displays the maximum phase current, and can also display the current value or time value of setting, test and fault.
b. Voltmeter function
Displays the voltage of each line, normally displays the maximum value.
c. Remote monitoring and self-diagnosis function
①The controller has the function of self-diagnosis of local faults
When the computer fails, it can issue an error "E" display or alarm, and restart the computer at the same time. When the user needs it, the circuit breaker can also be disconnected.
②When the local ambient temperature reaches 80℃, it can issue an alarm and disconnect the circuit breaker at a lower current (when the user needs it).
③The intelligent controller has overload, grounding, short circuit, load monitoring, pre-alarm, trip indication (OCR) and other signals output through contacts or optical coupling, which is convenient for users to use external remote control. The contact capacity is DC28V, 3A; AC125V, 3A.

d. Setting function
The various parameters of the controller can be set by using the four buttons of setting, field, day, and storage. Press the setting key to set the state to be set (indicated by the status indicator light), then press the field or day key to adjust the parameter size to the required value, and then press the storage key. The storage light will light up once to indicate that the setting value has been locked, and the protection parameters of the controller must not be cross-set. After the controller is powered off and reset, press the setting key again to check the various set parameters in a cycle.
e. Test function
The various protections of the controller can be checked by using the setting field, day, trip, non-trip, and position keys. Use the setting field and day keys to adjust a test current that simulates a fault (note: do not press the storage lock), and then press the trip or non-trip key to test, and the controller can enter the fault processing. Press the trip key to disconnect the circuit breaker, press the non-trip key to disconnect the circuit breaker, and the various indication states of the controller are normal. After the test, you need to press the position or clear light key before you can perform other tests.
Note: For the convenience of testing, the ground leakage is set to the tripping or alarming position, and the test is tripped, and the priority is lower than the overload protection. Once a fault occurs during the test, the controller automatically stops all tests and enters the fault processing.

f. Load monitoring function

Set two values, I_Lc1 setting range (0.2-1) In, I_Lc2 setting range (0.2-1) In. I_Lc1 delay characteristics are inverse time characteristics, and its time setting value is 1/2 of the long delay setting value; I_Lc2 delay characteristics have two types, the first is the inverse time function, and its time setting value is 1/4 of the long delay setting value, and the second is the fixed time, and its delay time is 60s. These two delay functions, the former is used to disconnect the lower unimportant load when the current is close to the overload setting value, and the latter is used when the current exceeds I_Lc1 Setting value, after the lower unimportant load is disconnected, the current is reduced, so that the main circuit and important load circuit protection power supply, when the current drops to I_Lc2,When the power is off, it will issue a command after a certain delay to reconnect the circuit that has been cut off at the lower level, and restore the power supply of the entire system. The user can choose one of the above two monitoring protections. The monitoring characteristics are shown in Figures 3 and 4.

g.MCR tripping and simulated tripping protection can be turned off according to user requirements. It is generally necessary to turn off when doing short-delay breaking tests.
①MCR connection and breaking protection is mainly used when closing the circuit breaker in the fault state of the line (the moment the controller is powered on). The controller has the function of breaking the circuit breaker at low short-circuit current. The factory setting is 10KA, with an error of +20%. The set current can be determined according to user requirements.
②The controller is equipped with the function of directly sending a tripping signal when a particularly large short-circuit current occurs, without the signal being processed by the host chip.
h. Thermal memory function
After the controller is overloaded or short-circuited and delayed tripped, before the controller is powered off, it has a memory function that simulates the characteristics of the bimetallic strip. The overload energy is released after 30 minutes, and the short-delay energy is released after 15 minutes. During this period, if an overload or short-delay fault occurs, the tripping time will be shortened, the controller will be powered off, and the energy will be automatically cleared.

Appearance and installation dimensions

1. Installation dimensions and appearance dimensions of fixed circuit breakers (ERW1-2000/3, 2000/4)

2. Installation dimensions and overall dimensions of fixed circuit breakers (ERW1-3200/3, 3200/4)

3. Installation dimensions and overall dimensions of drawer type circuit breakers (ERW1-2000/3, 2000/4)

4. Installation dimensions and overall dimensions of drawer-type circuit breakers (ERW1-3200/3, 3200/4)

5. Installation dimensions and overall dimensions of drawer-type circuit breakers (ERW1-4000/3)

6. Installation dimensions and overall dimensions of drawer-type circuit breakers (ERW1-4000/4)

7. Installation dimensions and external dimensions of fixed circuit breakers (ERW1-4000/3)

8. Installation dimensions and overall dimensions of drawer-type circuit breakers (ERW1-6300/3, 6300/4IN:4000, 5000)

9. Installation dimensions and external dimensions of fixed circuit breakers (ERW1-6300/3In:6300A)

Specifications and quantity of copper busbars for user connection are shown in the table below

10.Panel opening installation dimensions

The user should specify when ordering:
1. Drawer type or fixed type
2. Rated current and rated voltage
3. Operating voltage of shunt release, undervoltage release, energy release electromagnet and motor.
4. Type of intelligent controller: L type, M type, H type.
5. Current setting value and corresponding setting time of overcurrent long delay, short circuit delay, short circuit instantaneous and grounding protection.

OEM Service

Shaanxi Huadian Electric Co., Ltd. is a leading provider of high-quality electrical equipment and solutions. We offer comprehensive OEM (Original Equipment Manufacturer) services to meet the diverse needs of our clients. Our OEM services include:

Custom Design and Development: Tailored solutions to meet specific client requirements.

Manufacturing Excellence: State-of-the-art manufacturing facilities ensuring top-notch quality.

Quality Assurance: Rigorous testing and quality control processes to ensure reliability and durability.

Logistics and Delivery: Efficient logistics network ensuring timely delivery worldwide.

After-Sales Support: Dedicated support team to assist with any post-purchase needs.

Partner with us to leverage our expertise and experience in delivering customized electrical solutions that drive your business forward.

Contact Us

For any inquiries, collaborations, or support, please feel free to reach out to us. Our dedicated team is here to assist you.

Shaanxi Huadian Electric Co., Ltd.

Email:

austinyang@hdswitchgear.com

rexwang@hdswitchgear.com

pannie@hdswitchgear.com

We look forward to hearing from you and working together to achieve mutual success.

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