TKEL3 series residual current circuit breaker-Taikai Electric Appliance-Dedicated to low-voltage equipment

Home

TKEL3 series residual current circuit breaker

The TKEL3 series residual current circuit breaker (referred to as circuit breaker) is a new product integrating protection, measurement, communication, and monitoring functions. It is mainly developed to meet the various needs of the ubiquitous power internet of things for low-voltage power distribution. The TKEL3 series circuit breaker is suitable for AC 50Hz circuits with a rated insulation voltage of 1000V, rated voltage AC400V and below, and rated working current 800A and below. This product is suitable for three-phase four-wire low-voltage power grids with directly grounded neutral points, providing indirect contact protection against electric shock hazards to human bodies, and also providing protection for the grounding, current, voltage, and frequency of lines or electrical equipment. The circuit breaker has all the intelligence of an electronic system: precise measurement and analysis functions, convenient access to important information, communication through open protocols, etc., which can maximize the optimization and management of the power system.

Belonging Category:

Internet of Things Circuit Breaker

Keywords:

TKEL3 series residual current circuit breaker

86-538-8520889

Product Inquiry

Related Products

Product Details

Product Introduction

The TKEL3 series residual current protective circuit breaker (hereinafter referred to as circuit breaker) is a new product integrating protection, measurement, communication, and monitoring functions. It is developed mainly to meet the various needs of low-voltage power distribution in the ubiquitous power Internet of Things. The TKEL3 series circuit breaker is suitable for AC 50Hz circuits with a rated insulation voltage of 1000V, rated voltage AC400V and below, and rated working current 800A and below. This product is suitable for low-voltage power grids with three-phase four-wire neutral point directly grounded, providing indirect contact protection against electric shock hazards to human bodies, and also providing protection for the grounding, current, voltage, and frequency of lines or electrical equipment. The circuit breaker has all the intelligence of an electronic system: precise measurement and analysis functions, convenient access to important information, communication through open protocols, etc., which can maximize the optimization and management of the power system.

Standards Compliance

GB/T 14048.1 Low-voltage switchgear and controlgear Part 1: General rules

GB/T 14048.2 Low-voltage switchgear and controlgear Part 2: Circuit-breakers

GB/T 32902 Residual current protective circuit breaker (CBAR) with automatic reclosing function

GB/T 6829 General requirements for residual current operated protective devices

Environmental Verification

GB/T 14597 Climatic environmental conditions for electrical products at different altitudes

GB/T 20645 Technical requirements for low-voltage electrical appliances for plateau use under special environmental conditions

GB/T 2423.1 Electrical and electronic products—Environmental testing—Part 2: Test methods—Test A: Cold

GB/T 2423.2 Electrical and electronic products—Environmental testing—Part 2: Test methods—Test B: High temperature

GB/T 2423.4 Electrical and electronic products—Environmental testing—Part 2: Test methods—Test Db: Damp heat, cyclic (12h+12h cycle)

GB/T 2423.17 Electrical and electronic products—Environmental testing—Part 2: Test methods—Test Ka: Salt mist

Standard Working Conditions

Ambient temperature: Normal -5℃~+40℃, Extreme -25℃~+70℃;

Installation altitude: Not exceeding 5000m (derating required for altitudes exceeding 2000m);

At a maximum temperature of +40℃, the relative humidity of the air does not exceed 50%; at lower temperatures, higher relative humidity is permissible, e.g., 90% at 20℃. Special measures should be taken for condensation occasionally caused by temperature changes;

Pollution degree: Grade 3;

Circuit breaker protection level IP20;

Application category: B;

Installation category: Class Ⅲ;

Installation vertical inclination not exceeding 5°;

Transportation and storage conditions: Not lower than -40℃, not higher than 80℃;

Product Structure

Performance Advantages and Features

Automatic Reclosing The circuit breaker has a leakage current single reclosing function. After a leakage current trip, it automatically recloses once within 20-60 seconds; if the leakage fault persists, the circuit breaker will trip again and lock out to ensure safety.

Display Unit The circuit breaker has a built-in display unit, which can realize various local and remote display modes. LCD display: The display is intuitive and clear, facilitating quick reading of electrical parameters.

Precise Measurement The circuit breaker has an independent high-precision metering module that monitors various power parameters of the main circuit in real time, such as current, voltage, frequency, and power factor. The metering accuracy can reach ±0.5%, and it also stores and calculates the corresponding power parameters, meeting the needs of intelligent power distribution systems.

Independent Design of Functional Modules The circuit breaker has built-in independently designed protection, metering, and communication processing modules to prevent mutual interference and improve the reliability of the controller; it has an independent power supply module to ensure the reliable operation of various functions when the circuit breaker is unloaded.

Convenient Communication The circuit breaker has an RS485 communication port and can match various communication protocols: Modbus, DL/T645, DL/T698, etc. It supports an HPLC high-speed carrier communication module, and can also expand low-power wireless communication (Bluetooth) functions, infrared communication functions, etc.

Topology Structure It can realize upper and lower level relay protection, accurate fault location, selective switching, etc.

Model and Meaning

250

□

Serial Number	Description	Model Meaning
1	Enterprise code	TK: Shandong Taikai Electrical Appliance Co., Ltd.
2	Product Category	EL: Residual current protective circuit breaker with automatic reclosing function
3	Design SN	3
4	Frame Size	125、250、400、630、800
5	Breaking Capacity Code	H: High breaking capacity type
6	Display Type	Y: LCD display S: Digital tube display
7	Pole Number	3N: 3 poles, N pole always connected
8	Structure Code	No code: Regular type X: Compact type (only 630 frame)
9	Special Function Code	No code: Standard configuration GF: Photovoltaic type FK: Fee control type G2: Metering type, 2% accuracy G0.5: Metering type, 0.5% accuracy,

Remarks: Please confirm the special functions and other configuration requirements with our company before ordering.

Power Loss

Model	Energized Current (A)	Power Loss (W)
Model	Energized Current (A)	Front Panel Wiring
TKEL3-125	125	40
TKEL3-250	250	50.6
TKEL3-400	400	52.8
TKEL3-630	630	71.4
TKEL3-800	800	115.2

High Altitude Derating Factor
For altitudes exceeding 2000m applicable to Stand working conditions, the electrical performance of the circuit breaker can be corrected according to the table below;

Altitude (M)	2000	3000	4000	5000
Power Frequency Voltage (V)	3000	2500	2000	1800
Working Current Correction Factor	1	0.94	0.88	0.83
Short-circuit breaking capacity correction factor	1	0.83	0.71	0.63

Main Technical Parameters and Performance Indicators

Model		TKEL3-125	TKEL3-250	TKEL3-400	TKEL3-630X	TKEL3-630	TKEL3-800
Frame Current Inm (A)		125	250	400	630	630	800
Setting Current Ir (A)		50A~125A Adjustable	100A~250A Adjustable	160A~400A Adjustable	250A~630A Adjustable	250A~630A Adjustable	320A~800A Adjustable
reclosing time		20-60s
Rated Insulation Voltage Ui (V)		AC1000V
Rated Impulse Withstand Voltage Uimp (V)		8000V
Pole Number		3P+N
Rated voltage Ue (V)		AC 400V
Rated residual operating current I△n (mA)		30mA, 50mA, 100mA, 200mA, 300mA, 500mA, 800mA, 1000mA, OFF
Rated residual non-operating current I△no (mA)		0.5I△n
Maximum non-actuation time △t (s)		Non-delayed, 0.06s, 0.1s, 0.2s
Rated ultimate breaking capacity Icu (kA)		50	80	80	80	80
Rated operating breaking capacity Ics (kA)		35	50	50	50	50
Rated short-time withstand current Icw (kA)		5kA/1s	5kA/1s	5kA/1s	7.6kA/0.5s	10kA/1s
Category of Use		B	B	B	B	B
Mechanical life (times)		7500	7500	7500	7500	7500
Mechanical life (times)	Maintenance-free	10000	10000	10000	10000	10000
Mechanical life (times)	With maintenance	20000	20000	20000	20000	20000
Dimensions (mm)	L	220	240	335		355
	W	122	142	195		280
	H	134	135	177		184
Arcing distance (mm)		<50	≤50	≤100		≤100
Mounting Method		Front Panel Wiring