Solution

To provide customers with power system integration solutions, with technology to lead the healthy growth of power technology, is your trusted partner.

Emergency Power System Scheme

Industrial and commercial energy storage system scheme

AC-DC integrated system scheme

Uninterruptible power supply system scheme

Charging system scheme

Emergency Power System Scheme

Product overview

Article 6.2.1 of GB 51348-2019 "Civil Building Electrical Design Standard (Description of Provisions)" stipulates as follows: Emergency Power Supply (Emergency Power Supply), referred to as EPS, is a power supply equipment composed of power converter, energy storage device (battery) and transfer switch (electronic or mechanical). When the AC input power is normal, the AC input power is directly output through the transfer switch.

The AC input power simultaneously charges the battery pack through the converter. In case of interruption (such as power interruption, voltage does not meet the power supply requirements), EPS uses the energy storage discharge of the battery pack to pass through the inverter transformation, and automatically switches to the emergency state to supply power to the load through the transfer switch.

Technical Requirements

1. Standard for Electrical Design of Civil Buildings GB 51348-2019

2. General Code for Electrical and Intelligent Building (GB 55024-2022)

Product use Product naming

Emergency power supply EPS can be widely used in:

Application construction projects include hospitals, stadiums, rail subways, high-speed tunnels, hotels, government offices, airport stations, coal chemical and other engineering project systems, with a wide range of applications and strong load adaptability.

Application of new projects in the construction of emergency lighting, evacuation instructions, fire elevators, fire pumps, smoke exhaust fans, fire shutter doors, high-pressure sodium lamps, gas discharge lamps, operating tables, sewage pumps, gasification condensate pumps, chemical vacuum pumps and other important load equipment.

Standby power supply and emergency power supply configuration table Comparison table of emergency power supply EPS and diesel generator set

Clause	Load level	Ⅰ#mains power	Ⅱ#mains power	III # Independent dedicated line mains power	Self provided power supply settings		Application conditions
Clause	Load level	Ⅰ#mains power	Ⅱ#mains power	III # Independent dedicated line mains power	Emergency power supply	Backup power supply	Application conditions
Clause 1	Super	Meet dual power supply requirements		Unable to obtain	Diesel generator	—	Large capacity of special load and long power supply time
	Super	Meet dual power supply requirements		Unable to obtain	UPS/EPS	—	Special load capacity is large, power supply time is long, and switching time is required to be short
	Super	Meet dual power supply requirements		Unable to obtain	Diesel generator+UPS/EPS	—	Special load capacity is large, power supply time is long, and switching time is required to be short
Clause 2	First level	Can be obtained	Unable to obtain or do not meet dual power requirements	—	—	Diesel generator	Large primary load capacity and long power supply time
	First level	Can be obtained	Unable to obtain or do not meet dual power requirements	—	—	UPS/EPS	The first level load has a small capacity, short power supply time, or requires short switching time
	First level	Can be obtained	Unable to obtain or do not meet dual power requirements	—	—	Diesel generator+UPS/EPS	When the switching time between the mains and diesel generators does not meet the requirements, UPS/EPS power supply shall be added. The capacity of UPS/EPS shall meet the requirements of the first level load capacity, and the power supply time shall not be less than the switching time between the mains and diesel generators
Clause 3	First level	Meets dual power supply requirements but the switching time between two power sources does not meet the requirements (such as cold standby of two power sources)		—	—	Diesel generator or UPS/EPS or a combination of both	The self-contained power supply should meet the requirements of primary load capacity, power supply time, and switching time

指标	应急电源（EPS）	备用发电机组
起动时间	快速起动切换＜0.25s，带载100%。	起动60秒左右，空载起动后逐步加载。
环保	无排气、无排烟、无噪音、无振动、无公害。	需进行环评验收，对排气、排烟、振动、噪音等公害，增加环保措施。
防火	无燃烧物、无火灾隐患，无需防火措施。	有可燃油料、有火灾隐患，强制消防火灾报警措施
维护	无人值守、自动启动和停机，少量维护。	需要专人定期看管，月度起动、定期维护、增加费用。
供电状况	供电电压、频率稳定，波形好、无浪涌。	电压和频率非常不稳，供电质量差，损坏电器。
过载保护	过载能力强，保护功能完善。	过载能力弱，保护功能差。
可靠性	电力电子部件寿命20年以上，可靠性高。	机械器件寿命10年左右，关健时候不能启动，可靠性差。
造价成本	一次性投入，通过销峰填谷节约电费，5至7年收回投资。	由一次投资和二次投资组成，由购置费+辅助装置费+消防设施费+燃油及机油费+人工维护费+维修费等组成，后期试验运行费、更换储油费用较高。
智能管理	RS232/RS485接口，可远程监控，实现在线监控工作状态，为用户创造节约电源管理。	无节费管理，增加费用。
占地面积	8-12平方米，使用面积小造价低。	20-30平方米，使用面积大造价高。

Product working principle

When the commercial power supply is normal, the EPS power supply is supplied to the important load by the commercial power supply through the output switching device, and the EPS power supply is charged or floated by the charger at the same time. When the commercial power is cut off or the voltage exceeds the power supply range, the controller starts the inverter, and the output switching device immediately switches the commercial power supply state to the inverter power supply to provide emergency power supply for the load equipment. When the commercial power is restored, the emergency power supply will be restored.

Model		LY S-100~1500KVA
Charger	Input mains power	AC380V（±15%）、50Hz±3%
	Charging voltage	DC400V-DC1000V
	Charging current	3-20A
	Charging method	Automatic conversion between equalization and float charging
Storage battery	Rated voltage	DC400V-DC1000V
	Backup time	≥ 90 minutes, 30, 60, 90, and 120 minutes can be selected according to demand
	Charging time	＜ 24h
Emergency inverter	Emergency voltage	AC220/380V（±15%）、50Hz±3%
	Output waveform	Sine wave（THD≤5%）
	Overload capacity	≤120% normal operation
	Protection function	Protection against overcharging, short circuit in charging circuit, over discharge, overvoltage, undervoltage, etc
	Emergency switching	Mechanical switching ≤ 0.25s, static electronic switching ≤ 3ms

Model specifications

Rated power （KVA）	External dimensions of the main cabinet Width * Depth * Height (mm)	External dimensions of battery cabinet Width * Depth * Height (mm)	Emergency time (Standard)	Single cabinet weight (including batteries)Kg
2-40	6008002200	6008002200	90min	1200
50-75	6008002200	6008002200*2	90min	1200
80-100	6008002200	6008002200*3	90min	1200
110-200	8008002200	6008002200*4	90min	1200
220-300	8008002200	6008002200*6	90min	1200
310-400	100010002200	60010002200*8	90min	1200
410-500	100010002200	60010002200*10	90min	1200
600-750	100010002200	60010002200*12	90min	1200
800-1000	100010002200	60010002200*15	90min	1200
1200-1500	100010002200	60010002200*20	90min	1200

Note: According to the emergency time (0.5 hours, 1 hour, 1.5 hours, 2 hours, 3 hours) configuration, select the same size of the battery cabinet and quantity, form the power pack screen system.

Technical features

Reasonable equipment layout, good seismic resistance and sealing performance, high reliability and stability;

The equipment adopts imported IPM intelligent power module assembly, good reliability and high safety;

The equipment can realize fire linkage control according to user requirements, and can set a main and a standby dual power input power supply system automatic switching;

The equipment adopts the plug-in design process, which is flexible in assembly and convenient in debugging and installation;

The panel adopts backlit LED liquid crystal display, with multi-channel analog, switch monitoring and protection functions, real-time display of operating status;

Selection scheme

1. Lighting EPS power supply unit:

Its rated output power shall not be less than 1.3 times the total capacity of the connected emergency lighting load.

2. Power equipment EPS power supply unit:

1) When the EPS power supply device has multiple motors and all of them are started, the EPS capacity = 1.05 × (the sum of the motor power directly started × the sum of the motor power started by 5 stars and triangle × 3 the motor power value started by variable frequency × 1.1)

2) When the EPS power supply device has multiple motors and they are not started at the same time, the EPS capacity = 1.05 × (the sum of the power of each motor, the power of the single motor with the largest direct starting capacity, X7 stars, the power of the single motor with the largest triangular starting capacity, the power of the single motor with the largest variable frequency starting capacity, the power of the motor with the largest variable frequency starting capacity, x 1.1)

The above motor work must also meet the following conditions:

a) The maximum single motor power for direct start is less than 1/7 of the EPS usable capacity;

B) The maximum power of a single motor for star-delta starting is less than 1/3 of the usable capacity of EPS;

c) The maximum single motor power for variable frequency start is less than 9/10 of the EPS usable capacity;

d) Adjust the capacity of EPS according to the maximum number in the above conditions to meet the working conditions of the motor. At the same time, the starting sequence of the motor shall be the first to start directly, followed by the star-delta starting, and finally the variable frequency starting.

Product Picture