EPS Emergency Power Systems (EPS is abbreviation of Emergency Power Supply), specifically designed for fire equipment and special load or lighting. When the AC grid is normal, the AC grid provide power supply for the load directly through the inter-device mutual mapping equipment, and the charger in the device carries out intelligent charging to the battery pack, float charging and automatic conversion.
When the AC grid is de-energized or the grid voltage drops below 15% or above rating of 10%, the device will immediately switch to the inverter output, that is, the battery group standby power through the inverter, continue to provide sinusoidal AC for load. When the grid voltage is normal, the device will restore to the grid power supply. In order to meet the requirements of power supply on the fire emergency, the device is equipped with manual start emergency inverter switch, the battery group under-voltage protection will force to lift switch.

TXEPS Emergency Power Systems uses the third generation EPS (Emergency Power Supply) technology of TAIXI Electric, products uses centralized control, wide input voltage range, safe and efficient, high reliability. This series EPS Fire Emergency Power System is designed for building automation, computerization and fire emergency needs. Low noise, high stability and operation as the design focus, and to maintain the company's product quality and excellent features. The biggest feature of EPS fire emergency power supply is using the latest IGBT composition power unit DSP full digital control technology, to make the control more accurate, more quick, more reliable and stable, and equipped with special IGBT driving chip and special control circuit. It adopts international advanced digital signal processor (DSP), ASIC control, electronic transformer technology, IGBT power device and instantaneous waveform control mode to realize output voltage with low distortion, high reliability, high anti-interference, high fault tolerance, anti-high surge, high overload capacity, and have the output short-circuit protection, input over-voltage protection, abnormal charge protection and shock surge protection. It is all-digital communication Emergency Power Systems with independent intellectual property rights. Its excellent electrical properties, provides long-lasting high reliability Emergency Power Supply protection. The use of modular structure is easy and convenient for the maintenance.

EPS emergency power supply is mainly used in the work power supply and fire power supply of various types of building; hospital security power supply; traffic system expressways, tunnels, subway, light rail, civil airport power supply; power supply of electric power system; power supply of all kinds of uninterruptible production, laboratory equipment. Is a high-quality power supply that provides pure sinewave for the load device.

Rated output voltage: D-single-phase standard sine wave output; S-three-phase standard sine wave output; P-three-phase standard sine wave or frequency conversion output

TXEPS series emergency power supply uses single inverter technology, sets inverters, chargers and controllers in one, there are battery detection, shunt detection circuit designed within the system. The working principle diagram of the main components is as follows:
Working status:
1. When the electric supply and DC input are normal, the electric supply provide power (ie, AC power supply) for the load through the static switch 1, meanwhile the battery pack charge;
2. When the electric supply is abnormal, DC (battery) input is normal, the DC through the filter, invert into a pure AC, provide power (ie DC inverter power supply) for the load through the static switch 2 ;
3. When the electric supply is abnormal, DC input is also abnormal, or the machine has overload, over temperature, shock and internal failure, etc., the machine will automatically protect and shutdown;

● TXEPS fire emergency power supply uses modern power electronic conversion technology, adopts IPM intelligent modules, CPU integrated control, digital circuits, reliability is strong. The product has a complete protection, a variety of failures have acousto-optic alarm, easy and convenient maintenance, is high-tech and environmental protection products.
● Use the United States Intel microprocessor control, DSP digital control, SPWM pulse width modulation technology, complete function;
● When the emergency output, PWM uses AC, harmonic content is low.
● Fire linkage interface, can achieve remote or building intelligent monitoring, fire center control;
● Import IPM intelligent power module, the output is balanced and stable;
● Variable frequency step-down start control technology, suitable for non-linear load;
● Panel of LCD and acousto-optic fault alarm, easy maintenance;
● Energy-saving, non-emergency power consumption is very low;
● "Four in One" integrated design, simple structure;
● Automatic instant switching, can be unattended.
● No noise, pollution-free, wire devices has flame retardant and non-flame retardant.
● Configure intelligent monitoring software to provide voice alarm function.
● Lead acid battery can be recycled 300-500 times.
● Host life is more than 20 years.
● Reliable quality, stable performance, reliable work, simple maintenance, long life, best price in the similar products.
● Fire emergency power supply works in the stabilivolt and frequency stability, static no noise, no pollution, pollution-free, energy-saving, non emergency power supply almost does not consume electricity.
● The product has the complete protection function, a variety of failures have acousto-optic alarm, easy and convenient maintenance.
• Wire and appliance have flame-retardant and non-flame retardant.
● Inverter supply voltage / frequency conversion work, the waveform is pure, no interference, high efficiency.
● High overload capability, complete protection function.

● TXEPS fire emergency power supply uses modern power electronic conversion technology, adopts IPM intelligent modules, CPU integrated control, digital circuits, reliability is strong. The product has a complete protection, a variety of failures have acousto-optic alarm, easy and convenient maintenance, is high-tech and environmental protection products.
● Use the United States Intel microprocessor control, DSP digital control, SPWM pulse width modulation technology, complete function;
● When the emergency output, PWM uses AC, harmonic content is low.
● Fire linkage interface, can achieve remote or building intelligent monitoring, fire center control;
● Import IPM intelligent power module, the output is balanced and stable;
● Variable frequency step-down start control technology, suitable for non-linear load;
● Panel of LCD and acousto-optic fault alarm, easy maintenance;
● Energy-saving, non-emergency power consumption is very low;
● "Four in One" integrated design, simple structure;
● Automatic instant switching, can be unattended.
● No noise, pollution-free, wire devices has flame retardant and non-flame retardant.
● Configure intelligent monitoring software to provide voice alarm function.
● Lead acid battery can be recycled 300-500 times.
● Host life is more than 20 years.
● Reliable quality, stable performance, reliable work, simple maintenance, long life, best price in the similar products.
● Fire emergency power supply works in the stabilivolt and frequency stability, static no noise, no pollution, pollution-free, energy-saving, non emergency power supply almost does not consume electricity.
● The product has the complete protection function, a variety of failures have acousto-optic alarm, easy and convenient maintenance.
• Wire and appliance have flame-retardant and non-flame retardant.
● Inverter supply voltage / frequency conversion work, the waveform is pure, no interference, high efficiency.
● High overload capability, complete protection function.

● Placed in the dust-free and dry and ventilated place (due to dust generally carry positive ions, easily lead to failure of the control circuit, in a spacious room to install the product, should with mandatory ventilation in the room)
● The appropriate temperature (emergency power supply can operate in the indoor environment of -10℃~40℃, but the opening temperature is preferably higher than 0℃, the ideal operating temperature is 10℃~25℃ (High temperature seriously affects the service life of battery)
● Relative humidity meets the requirements (10%~90%)not to condense
● The geographical position of the equipment is generally not higher than 2000 meters above sea level, and the temperature is between -10℃~55℃.
● No steam or other corrosive gases, no flammable and explosive goods nearby
● With the front power supply meeting safety regulations

This series EPS emergency power supply has perfect protection function. Once a failure occurs in the following table, the emergency power supply will enter the emergency state or close the output to ensure that the load is not damaged, and the inverter power supply itself is protected.

Installation of emergency power supply requires rationality at first, including the choice of the installation location, the correct configuration of the load, selecting the appropriate cable with correct connection and others, to ensure that the operation of emergency power supply can be safe and normal.

Load configuration

The signs of load equipment generally have rated voltage, current and other data, the volt ampere (VA) value required can be obtained by multiplying the two . Some devices are marked in watts (W), and multiply the wattage by 1.4 to get an approximate VA value. Users must carefully look at the load power in use, to avoid overload.
Load equipment in general operating conditions, especially in the standby state, its actual power is lower than the marked power, the user should use the nominal power of the equipment as the standard, meanwhile taking into account the impact current of the equipment when starting, it is best to have a power margin of 30%, in order to ensure a reliable power supply of emergency power supply.

Installation location

The installation location of the machine is chosen to facilitate heat dissipation, to facilitate wiring, and to comply with the working environment requirements of clause 2.6 of this manual. In addition, the inlet and outlet of the chassis must be kept clear, and keep enough distance from walls or other objects; emergency power supply must leave enough space for operation and maintenance; do not place any items on the top of the chassis.

Installation wiring

The following figure is the rear panel wiring diagram of conventional products produced by our company, for reference only, please refer to the wiring plate of various types of the inverter power supply or the supplementary notes of the manual. When wiring, must take the appropriate crimping measures, correct, strong and reasonable wiring are required, to avoid the overheating phenomenon when high current working.

Terminal Description:
AC input terminals (R-1 live line, S-2 live line, T-3 live line, N1 null line)
AC output terminals (U-1 live line, V-2 live line, W-3 live line, N2 null line)
Ground output terminal (E-Ground)
DC input terminals (+ DC positive, - DC negative)

Operation and display of the front panel LCD/LED as shown above, consist of the status indicator, LCD display, control buttons and other three parts. Respectively:
LED Status Indicator Description
● Electric supply (green) ON at the bypass output status, OFF at the non-bypass output status
● Inverter (red) ON in the emergency output state, OFF in the non-emergency output state
● Output (green) ON when the machine output is normal, OFF when the machine output is abnormal
● Fault (yellow) OFF when the machine is working normally, ON when the machine is abnormal

Warning!
※ The items on LCD panels have been set up in the factory, not free to change;
※ Changing the settings randomly will have unpredictable consequences, The company will not be responsible for the consequences.
※ Control parameters and correct parameters, related to the normal operation of the system, use the password to set. Non-professional and technical personnel shall not set.

LCD control and information

1. Function key description
● Confirm Function: When you need to enter the next menu, select the corresponding menu item and press the Enter key. After the corresponding control parameters have been modified, you must press this key to confirm and the modification will take effect.
● Exit Function: Press this key when you want to return to the previous menu; when the modification of the parameter is in half way, press the Escape key when you want to cancel the operation.
● △ Function: Can move up in the menu; count-up when set the parameters
● ▽ Function: Can move down in the menu; count-down when set the parameters
● Start Function: In the LCD power-on mode, start the inverter
● Stop Function: In the LCD power-on mode, stop the inverter

2. The menu item description and settings
● Run Parameters Display The current operating parameters of the system in real time. As follows:
A phase load current (A), B phase load current (A), C phase load current (A), A phase grid voltage (V), B phase grid voltage (V), C phase grid voltage (V), Inverter voltage (V), DC voltage (V), modulation system
● Priority display setting The user needs to display the operating parameters in preference via this menu setting
· After entering this level menu, when the cursor moves to the operating parameters you want to select, press the Enter key, then the end of the line will appear a mark
When the parameter is selected, and the user wants to cancel, press the Enter key again, the end of line mark will also be cleared
Up to three parameters can be set as the priority display parameter. When the four parameters are selected, the first selection will be invalid
When none of the parameters are selected, the system will display the first three parameters in the menu by default
● Fault Query This menu allows users to view the faults that occurred in the previous four times
The exclamation mark after the fault name from right to left indicates in turn the previous fault prompt pop-up in the first time, the previous fault prompt pop-up in the second time, the previous fault prompt pop-up in the third time, the previous fault prompt pop-up in the fourth time.
● Backlight Setting The user sets the backlight through this menu
The menu has two options, normally open and automatic, when the cursor moves to the corresponding option, press Enter to select it, the end of the line will appear a mark.

3. Operation instructions
● When the system is power-on, if the dialog box is displayed: "Whether to overwrite the data of the controller", press "Enter" to enter the priority display directly.
● After entering the priority display, press the Enter key to enter the main interface.
● After entering the main interface, you can move up or down the scroll bar and press the Enter key to enter the corresponding menu item.
● Press the Escape key to return to the priority display.
● At the lower left of the main interface is the current running status display (stop: indicates that the current system is in the stopping state, running: indicates that the current system is in the running stste), and the lower right is the working power display (grid: indicates the grid power supply at present; inverter: indicates the inverter output power supply at present).
● When the fault occurs, a fault warning screen will pops up and the cause of the fault is displayed

!!The "Run" and "Stop" keys are invalid in the status of the fault warning screen
Press the Enter key to enter the fault screen, press the Exit key to return directly to the main interface, at this time, except fault screen, there will be a reverse indication in the lower left of screens to indicate that there is in the faults of the last warning at present
When the fault is removed, the sign can be automatically cleared after a query operation

When the EPS emergency power supply has been installed, it should carry out a test run to ensure the reliable power supply of emergency power supply.

Operation steps are as follows:

● Ensure that the wiring of EPS emergency power supply is correct, safe and firm. Check whether the air switch is in the off position and the load is in the off state.
● Measure whether the voltage between the two terminals of the DC (battery) input is normal and its polarity is correct via the multimeter with DC voltage;
● Turn on the AC power of the previous stage and measure whether the voltage between the two terminals of the AC input is normal and its polarity is correct via the multimeter with AC voltage;
● Close the emergency power supply DC input switch, after about 3 to 5s, the LCD began to display, the front panel inverter lights on, there is the grid fault warning screen on the LCD;
● Press the exit in LCD and then press the RUN button, the output light is on, the whole machine starts normal operation. (If you want to terminate the output, press the stop key, the machine will terminate the output.);
● Close the EPS emergency power AC input switch, electric supply in the front panel, the output light on, emergency lights off, the machine turns to bypass output;
● Open the tributary load equipment one by one, check whether the load is working properly;
After above operation steps are normal, emergency power can be put into normal operation.

Proper operation of EPS emergency power supply to better ensure its life, for your load equipment to provide high-quality input power.
The following emergency power supply normal operating steps
Normal starting operation of emergency power supply
① Turn on the pre-DC input power;
② Turn on the pre-AC input power;
③ Close emergency power supply DC input switch;
④ Close emergency power supply AC input switch;
⑤ Close emergency power supply AC output switch;
⑥ One by one to open the load device switch;

Normal closing operation of emergency power supply
① One by one to close the load device switch;
② Cut off the emergency power supply AC output switch;
③ Cut off the emergency power supply AC input switch;
④ Cut off the emergency power supply DC input switch;
⑤ Cut off the pre-input power;

The front panel of fire emergency power supply has four indicators and an LCD. The emergency power supply itself has complete protection function, if there is abnormity or failure, it will close the inverter or stop the output, the indicator and the LCD will indicate the corresponding abnormal information and working condition of emergency power supply.

When the emergency power failure does not work, please follow the instructions manual, if still can not solve, please contact the dealer or factory as soon as possible, do not disassemble parts!

In order to ensure the continuous operation of emergency power supply, requiring frequent maintenance and repair.
The installation and storage of emergency power supply should avoid environment with high corrosive, high dust, high temperature, high humidity, in particular, should avoid the metal material into the box.
Regularly check whether the cable is aging, the cable connection point is tightened, safe.
Regularly clean the cooling fan and check that the fan is working properly.
Before open the box to maintain, you should completely cut off the power and shutdown for 10 minutes or longer, until the capacitor has been discharged, you can go on (the machine has a large capacity capacitors, discharge must be a certain period of time), careful not to damage the parts and components, pay attention to the order of wiring. Specific maintenance requirements:
● Clean the dust and debris inside the cabinet
● Check whether the terminals and the screws in the cabinet are fastened
● Check whether there are signs left after overheating and damaged device
● Check whether the wires inside the cabinet are aging
Open emergency power supply maintained in the cabinet, before re-put into use, test run should be carried out (refer to this manual), to ensure reliable power supply of emergency power supply.
When the emergency power has failure and does not work, please refer to the instruction manual to solve, if still can not solve, please contact the dealer or factory as soon as possible, do not disassemble parts by yourself!

1. AC single-phase input / single-phase output; emergency single-phase output

2. AC three-phase input / three-phase output; emergency single-phase output

3. AC three-phase input / three-phase output; emergency three-phase output

4. AC three-phase input / three-phase output; emergency three-phase frequency conversion output

1. EPS Emergency Power Schematic of Single-Power Supply Single-Input

Description: When there is electric supply, it outputs through KM1, meanwhile charging the battery charger, when the controller detects the electric supply or electric supply voltage is excessive, KM1 off, KM2 on, the emergency output of the inverter emergency supplies power to the load through KM2.

2. EPS Emergency Power Schematic of Single-Power Supply Double-Input

Note: One-line electric supply, two-line input, the load can usually have external switch control, when electric supply is normal, output of EPS can be controlled by external switch. But when the controller detects the electric supply or electric supply voltage is excessive, no matter what the external switch state, will make KM1 off and KM2 on, the emergency output of the inverter emergency supplies power to the load through KM2.

3. EPS Emergency Power Schematic of Double-Power Supply Double-Input

Description: Two-line electric supply input. Under normal circumstances, electric supply output through the KM1, KM3, meanwhile charging the battery charger, when the electric supply power-off or abnormal, standby power output through the KM4, KM1. Only when the electric supply and standby power at the same time have power outage or abnormal, to make KM1 off and KM2 on, the emergency output of the inverter emergency supplies power to the load through KM2. The two-line mutual mapping devices of this way is in the EPS.

4. EPS Emergency Power Schematic of second-way power supply double-circuit

Note: The EPS acts as a secondary power supply for the load and sets up a two-way mutual mapping at the output end. In this way, the inverter turns off when the electric supply is normal. When there is no electric supply or it is abnormal, emergency output, the inverter will start and output immediately. Two-way mutual mapping device is outside the EPS.

5. EPS Emergency Power Schematic of third-way power supply double-circuit

Note: The EPS acts as the third power supply for the load to supplies power to the primary load. Set the two-way mutual mapping at the output end. When the standby mains is normal, EPS output through KM1. When there is no standby power or it is abnormal, EPS through KM2 for emergency output. Two-way mutual mapping device is outside the EPS.

6. EPS emergency power supply load type

Description:
1. Continuous type: no matter what the electric supply state, always output by the power.
2. Non-continuous type: only when the electric supply power-off or abnormal, output by the power.
3. Fire linkage type: only when the fire linkage signal, output by the power.

1. Wiring diagram of connection to motor load

Description:
1. EPS only in the circuit as one-line power supply, in the absence of electric supply to provide emergency output.
2. The roller shutter door in the actual work, not start at the same time, the capacity of EPS should not be less than the 3 times the capacity sum of roller shutter door motor starting at the same time. The shutter doors have little power consumption, so if just for shutter doors, the battery configuration can be reduced accordingly. 20 minute spare time of EPS capacity can be selected.
3. The elevator driving motor should have a function of frequency conversion, capacity of EPS can be 1: 1 for the total capacity of the elevator.
4. Pumps can be divided into fire pumps, spray pumps, water pumps, etc. If the pump has frequency conversion start, the capacity of EPS is 1: 1 of the total capacity of the pump motors working at the same time. If the star delta step-down start, the capacity of EPS is more than 3 times the total capacity of the pump working at the same time. If the pump without any frequency conversion, star delta step-down start and other measures, the capacity of the EPS should be more than 5 times the total capacity of the pump motors working at the same time.
5. The fans can be divided into exhaust fan, intake fan, etc. If the fan has frequency conversion start, the capacity of EPS is 1: 1 of the total capacity of the fan motor working at the same time. If the star delta step-down start, the capacity of EPS is more than 3 times the total capacity of the fans working at the same time. If the fan without any frequency, star delta step-down start and other measures, the capacity of EPS should more than 5 times the total capacity of the fan motors working at the same time.

2, and power distribution cabinet connected to the mixed power supply wiring diagram

Description:
1. EPS only in the circuit as one-line power supply, in the absence of electric supply to provide emergency output.
2. EPS capacity should be designed according to the sum of the various load capacity of the work at the same time and 3 times frequency of the motor without class measures the total load capacity to calculate.
3. If capacity of the motor in the mixed power supply is only the total capacity of 1/7 or less, you can not consider starting margin. When the choice of EPS, its capacity and load capacity is 1: 1.
4. If the motors in the mixed power take variable frequency starting measures, do not consider power supply margin of EPS.

3, do the second power supply and substation connected wiring diagram

Description:
1, EPS emergency power supply input power line (ie, charging line) in accordance with the EPS nominal capacity of 10% to calculate.
2, EPS emergency power supply capacity and 5.2 with the distribution cabinet connected to the mixed power supply wiring diagram the same.

4, do the second power supply and substation connected wiring diagram II

Description:

(1) TXEPS-P series emergency power supply is composed of multiple cabinets. Including the host cabinet and battery cabinet. The size of the power cabinet is 600 × 800 × 2200 (depth × width × height). The capacity of 200KW or more power cabinet size 600 × 1200 × 2200 (D × W × H).
(2) Cabinet size can also be customized according to design and processing requirements.
(3) The installation size of main cabinet and battery cabinet is also arranged according to the standard installation drawing.

Keywords: Emergency Power Systems , EPS emergency power supply