BY81 Series Intelligent Capacitors

The BY81 series intelligent capacitors combine measurement and control technologies, employing synchronous switching for precise control, eliminating jitter, and extending service life to one million cycles. They offer high reliability, low failure rate, and low power consumption. Their rational compensation methods and full-featured design provide superior performance, including advanced power analysis capabilities, and can be equipped with various peripherals. Multiple units can be modularly combined, automatically generating a master unit and switching automatically in case of faults, featuring highly intelligent and intuitive operating status displays. There is no inrush current during shutdown, zero-crossing switching avoids over voltage, breakdown, arcing, and impact. Their comprehensive measurement and protection functions cover temperature, harmonics, phase loss, and three-phase imbalance protection.

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Product Description

The BY81 series intelligent capacitors, with△-type (2 units) or Y-type (1 unit) low-voltage power capacitors as the core, integrate microelectronics, sensing, network and advanced manufacturing technologies to achieve intelligence, miniaturization and modularization, representing a major breakthrough in low-voltage reactive power compensation technology. Featuring a simple structure, easy production and lower cost, they can improve performance and simplify maintenance. They can be flexibly adapted to various low-voltage reactive power compensation scenarios, completely innovating the traditional equipment mode.

Technical Indicators Of The Product

Project		Parameter
Power supply conditions	Rated voltage	-220V1380V
	Voltage deviation	±20%
	Voltage waveform	Harmonics ≤ 5%
	Voltage waveform	Sine wave, total distortion rate ≤ 5%
	Power frequency	48.5-51.5Hz
	Power consumption	<1W(When cutting off the capacitor)
	Power consumption	<1W(When investing two capacitors)
Measurement and error	Voltage	<0.5%
	Current	<1%
	Power factor	<±1.5%
	Temperature	±1℃
Protection error	Voltage	≤0.5%
	Current	≤1%
	Temperature	±1℃
Environment condition	Ambient temperature	-40℃-+40℃
	Relative humidity	40℃，20-90%
	Altitude	<2000m
Reliability parameters	Control accuracy	100%
Reliability parameters	Control allowable frequency	2 million times
Electrical safety	The electrical clearance and creep age distance, insulation strength, safety protection.short-circuit isolation.and adoption and control circuit protection all comply with the corresponding clauses in the Chinese power industry standards DL/T842-2003″Conditions for Use of Low Voltage Parallel Capacitor Devices”and GBT22582-2008″Power Factor Compensation Devices for Low Voltage Power Capacitors”.

Working Principle Of The Entire Machine

The product consists of intelligent components, synchronous switching switch electrical components, current sampling components, and low-voltage power capacitors.

Working Principle Of Each Component

MCU Intelligent Measurement & Control

Industrial-grade wide-temperature components, resistant to harsh environments, long-term stable operation,excellent intelligent control.

MCU Intelligent Measurement & Control

Independently developed, microelectronics controls mechanical contacts, zero-crossing switching, avoids inrush current, reduces loss,extends life.

Low-Voltage Power Capacitor

Self-healing, zinc-aluminum metallized film dielectric,high stability. Small-capacity parallel connection reduces loss and fault,built-in temperature control,over-temperature protection.

Appearance And Installation Dimensions

Outline dimensional drawing	Compensation method	Model	H(mm)
	Three-phase compensation	BY81JF/250-30	310
		BY81JF/250-25	270
		BY81JF/250-20	270
		BY81JF/250-15	240
		BY81JF/250-10	240
		BY81JF/250-5	240

Online Attachments

Rs-485 Online Connector

No.	Type	Length	Physical photos	Purpose
1	Type-A	30cm		Used for connecting two adjacent products
2	Type-B	80cm		Used for connecting products between upper and lower floors
3	Type-C	260cm		Used for connection between main and auxiliary cabinets, controllers, status indication products, and products