Low Frequency Online UPS

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General Introduction
The PTT series low frequency online UPS takes advantage of the static switch, state-of-the-art DSP technology, high speed microcontroller unit (MCU), complex programmable logic device (CPLD), and the 6th-generation low consumption high power insulated gate bipolar transistor (IGBT) to deliver stable and reliable performance. Moreover, it has large power capacity, and audible alarm is also achieved.

This is a world-class product, and it shows some remarkable properties as illustrated below.

1. Fully Digital Control Technology
a. Ultra stable digital circuit: Our product use advanced digital circuit to replace traditional analog circuit, realizing a great breakthrough in this field. With the help of this digital circuit, the MCU and CPLD could execute circuitry control, parameter setting and operation management in a perfect way, while the self-checking function is also beyond expectation. Moreover, sampling is carried out as long as our product works, and this technique is not only beneficial for self-checking and failure analysis of all the independent circuits on the circuit board, but also ensures stable and pure sine wave output, thus both our product and connected equipment will run in a stable way.

b. Intelligent battery management: This low frequency online UPS introduces an advanced battery management system to realize intelligent control of the battery. This management system adjusts the charge current according to battery configuration, and it also fits for equalizing charge and float charge switch, temperature compensated charging and discharge management. Aside from these, on the monitoring interface, operator could detect the running status of battery to ensure its working efficiency. In general, this intelligent battery management system helps operator manage the battery, and it can prolong battery life by 55% or even longer.

c. Intelligent detection system: The MCU will on-line detect power status, breaker state, fuse condition and working condition of all circuits in a continuous manner. If any failure occurs, the detection system will send alarm message to operator, and activate protection measures at the same time.

d. Parallel redundancy network: With the help of fully digital control technology, a parallel redundancy network of two or more UPS units is established.

2. Advanced Management Software
Our low frequency online UPS comes with a piece of management software to help users program this machine to realize flexible start up and shut down at predetermined time, and this software is also capable of battery discharge, equalizing charge, float charge and other functions. In this way, users will find it is very easy and convenient to manipulate this product.

3. High Precision SMD
Instead of conventional plug-in circuit, PTT series adopts high precision SMD to save space and eliminate undesired defects that are commonly seen for the traditional technology, thereby ensuring safe, reliable and precise running of the integrated circuit.

The combination of 4-layer circuit board and high precision SMD fully avoids interference of high-frequency signals that is generated by the chip itself to other chips, so every chip could work normally without being influenced by other ones, showing improved anti-interference property.

Moreover, due to the application of SMD technology, this online UPS shows the features of high accuracy, good resistance to high temperature, excellent filtering performance as well as stable overall performance, and its service life is extended by 80%.

In addition, the IGBT is characterized by high-speed switch, high working voltage and high working current, and the voltage type driving method requires small control power. The work efficiency of inverter is enhanced, and its temperature rise is small, realizing better reliability.

4. Information Processing Technology for Ultra Clear Interface
a. Audible alarm function is achieved.
b. The humanized large LCD screen allows users to view data in English or Chinese, and the running state of our product could be revealed directly. The touch button, and table-type data and event log facilitate your work greatly.
c. The LED indicators displays work flow status in an intuitive way.

5. Environmentally Friendly and Energy Saving Technology
As shown by the scientific life-cycle assessment which is a technique to assess environmental impacts associated with all the stages of a product's life from-cradle-to-grave, the PTT series online UPS possesses some outstanding properties when it comes to environment protection and energy conservation.

a. The touch panel shows superb resistance to ageing, and the machine body is processed by fluorocarbon paint. Hence, our product is durable and environmentally friendly.
b. The detachable modular design allows simple maintenance, and it also saves resources to a large extent.
c. A new kind of bearing is applied for the fan, and it has unrivaled heat dissipation effect and good energy saving performance.
d. The DLC consumes a little electricity during working, realizing the purpose of energy saving performance.
e. This low frequency online UPS is able to provide green energy with the help of rectification and inversion technologies.

6. Other Advantages
a. Excellent load characteristic: When load changes from 0% to 100%, our product is capable of providing stable and reliable output without being switched to the bypass circuit.
b. Perfect protections: Different kinds of protection functions are achieved, such as over temperature protection, input voltage surge protection, input/output overvoltage and under voltage protections, overcharge and overdischarge protections for battery, output overload and short circuit protections, etc.
c. High-performance dynamic characteristic: This online UPS adopts instantaneous control, effective value and other feedback controls to realize high-performance dynamic control, and the harmonic distortion of output voltage is cut down.
d. Optional input harmonic filter: This device could effectively suppress input harmonic pollution, thus enhancing input power factor and reducing input harmonic current.
e. Optional battery checking module: This module is able to detect parameters of the battery, and then reveals them on the display screen. If there is something wrong with the battery, it will alarm immediately to inform operators.
f. Individualized setting: According to practical applications, our product could be set at different work modes, including UPS working mode, ECO working mode, and EPS working mode.

Applications
Depending on the properties above, this low frequency online UPS has been widely accepted in variety of places, such as banking offices, automatic teller machines, communication base stations, billing centers of communication industry, as well as offices for power, transportation, securities, manufacturing and other industries.

Technical Parameters

Single-phase input single-phase output		1K	2K	3K	4K	6K	8K	10K	15K	20K
Rated capacity		800W	1600W	2400W	3200W	4800W	6400W	8000W	12000W	16000W
Product type		Low frequency double conversion online UPS
Phase number		Single phase (L N G)
Rectifier	Nominal input voltage	220VAC
	Input voltage range	±25%
	Nominal input frequency	50Hz±10%
	Input power factor	≥0.85
	Ripple factor	<2%
	Soft start	0~100%, 5 seconds
Charge process	Charge mode	Charge at constant current first, and then at constant voltage. Temperature compensated charging, automatic switch between float charge and equalizing charge are also provided.
	Float charge voltage	55VDC			220VDC
	Equalizing charge voltage	56.8VDC			227VDC
	Temperature compensating voltage	-3mV/℃ (single)
	Charge current	0.1C (Automatically adjusted according to settings of battery capacity)
	Charge power	40% of rated capacity
Battery	Type	Maintenance free lead-acid battery
	Capacity	Adjustable within 7~999Ah (the capacity range changes with power)
	Quantity	8pcs of 12V-battery (total 96V)			16pcs of 12V-battery (total 192V)
Inverter	Phase number	Single phase
	Nominal voltage	220VAC
	Output voltage stability	±1% for steady load, ±5% for fluctuated load
	Frequency stability	50Hz±0.5% (out of synchronization)
	Crest factor	>3:1
	Output waveform and harmonic distortion	Sine wave, <3% for linear load, <5% for non-linear load
	Dynamic characteristic	Transient voltage <±5% (change from 0% to 100%), recovery time<10ms
	Overload protection	115%: normal working
		125%: 10 minutes, 150%: 1 minute
		200%: 1 second
	Efficiency	>93% at full load
Bypass	Phase number	Single phase (L N)
	Nominal voltage	220VAC
	Transfer time	0ms (static switch)
Protection	Input	Over/under voltage and frequency
	Output	Over current, short circuit, low power factor
	Battery	Overcharge, overdischarge
	Temperature	High ambient/inverter temperature
	Hardware	Abnormal auxiliary power supply, circuit breaker tripping, fuse break down, over current and overvoltage for power devices
System parameters	Work environment	Ambient temperature: 0℃~40℃ Relative humidity: 30%~90% Altitude: <1000m (the power drops by 1% with every increase of 100m in altitude, and the maximum height is 4000m)
	Cooling method	Forced air cooling
	Communication interface	RS232 and RS485. Dry contact interface and SNMP card are optional.
	Current sharing unevenness for parallel operation	≤3%
	Redundancy	Series or parallel connected hot standby
	Resistance to surge	10/700μS, 5KV 8/20μS, 20KA
	IP rating	IP20
	Safety performance	3000VAC between input/output and ground, leakage current is lower than 3.5mA, and insulation resistance is over 2MΩ (500VDC).
	Noise level	45~50dB		50~55dB		55~60dB			55~60dB
	Size (W×D×H)	210×520×530mm		220×520×640mm		220×500×760mm			450×600×1200mm
	Weight	51kg	58kg	65kg	70kg	73kg	85kg	108kg	265kg	300kg

Table 2

Three-phase input single-phase output		6K	10K	15K	20K	30K	40K	60K	80K
Rated capacity		6KVA	10KVA	15KVA	20KVA	30KVA	40KVA	60KVA	80KVA
Product type		Double conversion online UPS
Phase number		Three phase (L N G)
Input power factor		>0.8 (>0.95 when with filter or 12-pulse rectifier)
Rectifier	Nominal input voltage	220/380VAC, 230/400VAC, 240/415VAC
	Input voltage range	±25%
	Nominal input frequency	50Hz±10%, 60Hz±10%
	Ripple factor	<2%
	Soft start	0~100%, 5 seconds
Charge process	Charge mode	Charge at constant current first, and then at constant voltage. Temperature compensated charging, automatic switch between float charge and equalizing charge are also provided.
	Float charge voltage	405VDC
	Equalizing charge voltage	432VDC
	Temperature compensating voltage	-3mV/℃ (single)
	Charge current	0.1C (Automatically adjusted according to settings of battery capacity)
	Charge power	20% of rated capacity
Battery	Type	Maintenance free lead-acid battery
	Capacity	Adjustable within 7~999Ah (the capacity range changes with power)
	Quantity	30pcs of 12V-battery or 180pcs of 2V-battery (nominal voltage of 360VDC)
Inverter	Phase number	Single phase (L N G)
	Rated power	Rated capacity × 0.8
	Nominal voltage	220VAC, 230VAC, 240VAC
	Output voltage stability	±1% for steady load, ±3% for fluctuated load
	Frequency stability	50Hz/60Hz±0.5% (out of synchronization)
	Crest factor	>3:1
	Output waveform and harmonic distortion	Sine wave, < 3% for linear load, < 5% for non-linear load
	Dynamic characteristic	Transient voltage < ±5% (change from 0 to 100), recovery time<10ms
	Overload protection	115%: normal working
		125%: 10 minutes, 150%: 1 minute
		200%: 1 second
	Efficiency	>93% at full load
Bypass	Phase number	Single phase (L N)
	Nominal voltage	220VAC (230VAC, 240VAC)
	Transfer time	0ms (static switch)
Protection	Input	Over/under voltage and frequency, phase loss and fault
	Output	Over current, short circuit, low power factor
	Battery	Overcharge, overdischarge
	Temperature	High ambient/inverter temperature
	Hardware	Abnormal auxiliary power supply, circuit breaker tripping, fuse break down, over current and overvoltage for power devices
System parameters	Work environment	Ambient temperature: 0℃~40℃ Relative humidity: 30%~90% Altitude: < 1000m (the power drops by 1% with every increase of 100m in altitude, and the maximum height is 4000m)
	Cooling method	Forced air cooling
	Communication interface	RS232 and RS485. Dry contact interface and SNMP card are optional.
	Current sharing unevenness for parallel operation	≤3%
	Redundancy	Series or parallel connected hot standby
	Resistance to surge	10/700μS, 5KV 8/20μS, 20KA
	IP rating	IP21
	Safety performance	3000VAC between input/output and ground, leakage current is lower than 3.5mA, and insulation resistance is over 2MΩ (500VDC).
	Noise level	45~50dB		50~55dB		55~58dB		55~60dB
	Size (W×D×H)	450×600×1200		600×720×1520		980×800×1800
	Weight	108kg	146kg	162kg	178kg	239kg	318kg	445kg	498kg

Table 3

Three-phase input single-phase output		6K	10K	15K	20K	30K	40K	60K	80K
Rated capacity		6KVA	10KVA	15KVA	20KVA	30KVA	40KVA	60KVA	80KVA
Product type		Double conversion online UPS
Phase number		Three phase (L N G)
Input power factor		>0.8 (>0.95 when with filter or 12-pulse rectifier)
Rectifier	Nominal input voltage	220/380VAC, 230/400VAC, 240/415VAC
	Input voltage range	±25%
	Nominal input frequency	50Hz±10%, 60Hz±10%
	Ripple factor	<2%
	Soft start	0~100%, 5 seconds
Charge process	Charge mode	Charge at constant current first, and then at constant voltage. Temperature compensated charging, automatic switch between float charge and equalizing charge are also provided.
	Float charge voltage	405VDC
	Equalizing charge voltage	432VDC
	Temperature compensating voltage	-3mV/℃ (single)
	Charge current	0.1C (Automatically adjusted according to settings of battery capacity)
	Charge power	20% of rated capacity
Battery	Type	Maintenance free lead-acid battery
	Capacity	Adjustable within 7~999Ah (the capacity range changes with power)
	Quantity	30pcs of 12V-battery or 180pcs of 2V-battery (nominal voltage of 360VDC)
Inverter	Phase number	Single phase (L N G)
	Rated power	Rated capacity × 0.8
	Nominal voltage	220VAC, 230VAC, 240VAC
	Output voltage stability	±1% for steady load, ±3% for fluctuated load
	Frequency stability	50Hz/60Hz±0.5% (out of synchronization)
	Crest factor	>3:1
	Output waveform and harmonic distortion	Sine wave, < 3% for linear load, < 5% for non-linear load
	Dynamic characteristic	Transient voltage < ±5% (change from 0 to 100), recovery time < 10ms
	Overload protection	115%: normal working
		125%: 10 minutes, 150%: 1 minute
		200%: 1 second
	Efficiency	>93% at full load
Bypass	Phase number	Single phase (L N)
	Nominal voltage	220VAC (230VAC, 240VAC)
	Transfer time	0ms (static switch)
Protection	Input	Over/under voltage and frequency, phase loss and fault
	Output	Over current, short circuit, low power factor
	Battery	Overcharge, overdischarge
	Temperature	High ambient/inverter temperature
	Hardware	Abnormal auxiliary power supply, circuit breaker tripping, fuse break down, over current and overvoltage for power devices
System parameters	Work environment	Ambient temperature: 0℃~40℃ Relative humidity: 30%~90% Altitude: < 1000m (the power drops by 1% with every increase of 100m in altitude, and the maximum height is 4000m)
	Cooling method	Forced air cooling
	Communication interface	RS232 and RS485. Dry contact interface and SNMP card are optional.
	Current sharing unevenness for parallel operation	≤3%
	Redundancy	Series or parallel connected hot standby
	Resistance to surge	10/700μS, 5KV 8/20μS, 20KA
	IP rating	IP21
	Safety performance	3000VAC between input/output and ground, leakage current is lower than 3.5mA, and insulation resistance is over 2MΩ (500VDC).
	Noise level	45~50dB		50~55dB		55~58dB		55~60dB
	Size (W×D×H)	450×600×1200		600×720×1520		980×800×1800
	Weight	108kg	146kg	162kg	178kg	239kg	318kg	445kg	498kg

Table 4

Three-phase input three-phase output		80KVA	100KVA	120KVA	160KVA	200KVA	250KVA	300KVA	400KVA
Rated capacity		80KVA	100KVA	120KVA	160KVA	200KVA	250KVA	300KVA	400KVA
Product type		Low frequency double conversion online UPS
Phase number		Three phase (L N G)
Input power factor		≥0.85 when with 6-pulse rectifier, ≥0.99 when with 12-pulse rectifier and filter
Rectifier	Nominal input voltage	380VAC
	Input voltage range	±25%
	Nominal input frequency	50Hz±10%, 60Hz±10%
	Input harmonic current	<30% for 6-pulse rectifier, <5% for 12-pulse rectifier and filter
	Ripple factor	<2％
	Soft start	0~100%, 5 seconds
Charge process	Charge mode	Charge at constant current first, and then at constant voltage. Temperature compensated charging, automatic switch between float charge and equalizing charge, programmable automatic maintenance for charge and discharge at fixed time are also provided.
	Float charge voltage	432VDC
	Equalizing charge voltage	464VDC
	Temperature compensating voltage	3mV/℃ (single)
	Charge current	0.1C (Automatically adjusted according to settings of battery capacity)
	Charge power	20% of rated capacity
Battery	Type	Maintenance free lead-acid battery
	Capacity	Adjustable within 7~999Ah (the capacity range changes with power)
	Quantity	32pcs of 12V-battery or 192pcs of 2V-battery (nominal voltage of 384VDC)
Inverter	Phase number	Three phase N
	Rated power	Rated capacity × 0.9
	Nominal voltage	380VAC
	Output voltage stability	±1% for steady load, ±3% for fluctuated load
	Frequency stability	50Hz/60Hz±0.5% (out of synchronization)
	Crest factor	>5:1
	Output waveform and harmonic distortion	Sine wave, <3% for linear load, <5% for non-linear load
	Dynamic characteristic	Transient voltage <±5% (change from 0% to 100%), recovery time<10ms
	Unbalance load voltage	≤±5%
	Overload protection	115%: normal work, 125%: 60 minutes, 150%: 10 minutes, 200%: 10 seconds
	Efficiency	>95% at full load
Bypass	Phase	Three phase N
	Nominal input voltage	380VAC
	Nominal output voltage	380VAC
	Transfer time	0ms (static switch)
Protections	Input	Over/under voltage and frequency, phase loss and fault
	Output	Over current, short circuit, low power factor
	Battery	Overcharge, overdischarge
	Temperature	High ambient/inverter temperature
	Hardware	Abnormal auxiliary power supply, circuit breaker tripping, fuse break down, over current and overvoltage for power devices
System parameters	Economical operation mode	The overall efficiency when running under ECO mode could reach up to 98%.
	Audible alarm	Audible alarm is available if UPS failure occurs.
	Working environment	Ambient temperature: -30℃~50℃ Relative humidity: 30%~90% Altitude: <2000m (the power the power drops by 1% with every increase of 100m in altitude, and the maximum height is 4000m)
	Cooling method	Forced air cooling
	Communication interface	RS232 and RS485. Dry contact interface and SNMP card are optional.
	Redundancy	Series or parallel connected hot standby
	Resistance to surge	10/700μS, 5KV 8/20μS, 20KA
	IP rating	IP31
	Safety performance	3000VAC between input/output and ground, leakage current is lower than 3.5mA, and insulation resistance is over 2MΩ (500VDC).
	Noise level	60~65dB				65~70dB
	Size (W×D×H)	980×800×1800mm			1380×950×1800mm		1600×1150×1800mm
	Weight	560kg	850kg	910kg	1320kg	1680kg	1750kg	1830kg	1980kg

Related Names
Industrial UPS System Supplier | Backup Power | Line Interactive Power Device

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