OEM GNW1-1600 Intelligent Universal Circuit Breaker Supplier, Suppliers

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OEM GNW1-1600 Intelligent Universal Circuit Breaker Supplier, Suppliers

GNW1-1000/1600/2000/3200/4000/6300 GNW1-1600 intelligent low-voltage universal circuit breaker (hereinafter referred to as circuit breaker) is suitable for AC 50Hz, rated working voltage to 690V, rated current 200A-1600A in the distribution network, used to distribute electric energy and protect lines and power equipment from overload, under voltage, short circuit, single-phase grounding (leakage) and other faults.

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Product Description

Purpose and scope of use

GNW1-1600 intelligent low-voltage universal circuit breaker has an intelligent protection function, and the selective protection can improve the reliability of power supply and avoid unnecessary power outages. At the same time, it has an open communication interface, which is easy to connect with the fieldbus, and can realize the "four remote" functions to meet the requirements of the control center and automation system. Configure the corresponding leakage transformer and intelligent controller to achieve buckle point protection.

The circuit breaker has an isolation function and is represented by the symbol "_/| * × *". The circuit breaker with rated working current of 630A and below can also be used as fault protection for overload, short circuit, phase loss, under voltage and grounding of the motor in the AC 50(60)Hz, 400V distribution network. Under normal conditions, the circuit breaker can also be used for infrequent conversion of lines and infrequent starting of motors.

The circuit breaker complies with GB14048.1-2006 "Low-voltage switchgear and control equipment: General Provisions" and GB 14048.2-2008 "Low-voltage switchgear and control equipment-Part 2: Circuit breakers"; GB 14048.4-2003 "Electromechanical Contactors and Motor Starters for Low-voltage Switchgear and Control Equipment" and other standards.

Model meaning

Classify

According to the use category: main circuit: class A (phenanthrene selective type), class B (selective type) and AC-3 (direct operation motor) auxiliary circuit: AC-15, DC-13
Installation: fixed drawer type
Rotation mode: the motor rotates manually
Number of poles: three poles and four poles
According to whether it is suitable for isolation: suitable for isolation and not suitable for isolation
According to whether maintenance is needed: maintenance is required, maintenance is not required
Types of trippers: intelligent controller shunt trips, under voltage instantaneous (or delayed) trippers
Classification of intelligent controllers:
- 2L type: economy type (basic function)
- 3M type: basic type (basic function + intelligent function)
- 3H type: advanced type (basic function + intelligent function + communication interface)

Normal working conditions

The upper limit of ambient air temperature shall not exceed +40°C, the lower limit shall not be less than -5°C, and the average value of 24h shall not exceed +35°C. (Note: For working conditions where ambient air is above +40°C or below -5°C, the user should consult for special guidelines).
The altitude of the installation site shall not exceed 2000m.
When the maximum temperature is +40°C, the relative humidity of the air does not exceed 50%, and at lower temperatures it can have a higher relative humidity, such as 90% at 20°C. Special measures should be taken for the resulting condensation.
Pollution level 3.
The circuit breaker is installed in the cabinet, and the door frame is installed, and the protection level is up to IP40.
The main circuit of the circuit breaker and the under voltage tripper coil, the primary coil of the power transformer is installed in the category IV, and the rest of the auxiliary circuits and control circuits are installed in the category III.
Use Category B.
Transportation and storage conditions of circuit breaker: -25°C to -55°C, up to +70°C in a short time (within 24 hours). The circuit breaker should be installed without explosion hazard and conductive dust, and without sufficient corrosion where metal is etched and insulation is broken, and the vertical inclination of the circuit breaker does not exceed 5°.

Technical data and performance

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

Shell Grade Rated Current Inm (A)	Rated current In (A)
1600	200, 400, 630, 800, 1000, 1250, 1600

The rated insulation voltage of the circuit breaker is 690V, and the rated working voltage is 400V and 690V. The rated short-circuit connection capacity of the circuit breaker shall not be less than 2.11CU. The rated short-circuit breaking capacity and short-time withstand current of the circuit breaker are shown in Table 2:

Shell Grade Rated Current Inm (A)	1600		Wire entry method	Arcing distance
Rated limit short-circuit breaking capacity Icu(kA) O-CO	AC400V	55	Up or down line	Zero arcing
	AC690V	25
Rated operating short circuit breaking capacity Ics(kA) O-CO-CO	AC400V	42
	AC690V	20
Rated short-time withstand current Icw(kA)1s O-CO	AC400V	42
Rated short-time withstand current Icw(kA)1s O-CO	AC690V	20

Intelligent controller protection features: The protection characteristic curve of the overcurrent tripper is shown in Figure 1, and the grounding fault protection characteristic curve is shown in Figure 2. The setting value and error of the intelligent controller are shown in Table 3:

Overcurrent tripper characteristics	The range of set values		Factory setting value
Overcurrent tripper characteristics	2M/2H	3M/3H	Factory setting value
Long delay IR	(0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1)In+OFF	(0.4~1)In+OFF	1In, 120s
Short-latency Isd	L3: (3, 4, 6, 8, 10, 12, 15)In+OFF L4: (3, 4, 5, 6, 7, 8, 10)In+OFF	(1.5~15)In+OFF	6In, 0.2s
Instantaneous Li	L2: (3, 4, 6, 8, 10, 12, 15)In+OFF	1In~50kA+OFF	10In
Ground fault Ig	(0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8)In+OFF	(0.2~1)In+OFF	0.4In, 0.2s

Note: 1. "OFF" means that the protection feature of the overcurrent tripper is deactivated.

2. Unless otherwise specified, the product is configured with default factory settings upon delivery. Please refer to the user manual of the intelligent controller when custom settings are required.

Frequently Asked Questions (FAQ)

Q What is the primary function of the GNW1-1600 intelligent universal circuit breaker?

It features intelligent protection functions and selective protection to improve power supply reliability and avoid unnecessary power outages. It also has an open communication interface to easily connect with fieldbuses and realize control functions.

Q Which standards does the GNW1-1600 circuit breaker comply with?

It complies with GB14048.1-2006 (General Provisions for low-voltage switchgear), GB 14048.2-2008 (Circuit breakers), and GB 14048.4-2003 (Electromechanical Contactors and Motor Starters).

Q What are the ambient working temperature limits for this circuit breaker?

The ambient air temperature must be between -5°C and +40°C, and the average temperature over 24 hours should not exceed +35°C. For extreme temperature operation, special consultation is required.

Q What options are available for the intelligent controller types?

It features three classification models: the 2L type (economy type with basic function), the 3M type (basic type with basic plus intelligent functions), and the 3H type (advanced type including basic, intelligent, and communication interfaces).

Q What are the installation limits regarding altitude and inclination?

The altitude of the installation site must not exceed 2000 meters, and the vertical inclination of the installed circuit breaker must not exceed 5°.

Q What is the rated insulation and working voltage of the circuit breaker?

The circuit breaker has a rated insulation voltage of 690V, and supports rated working voltages of both 400V and 690V.