NASN Static Transfer System
In many important occasions, the reliability of the load of electricity consumption is very important. In order to improve the reliability of the load, the general power supply system adopts dual power supply, such as dual main power, one main power and UPS. However, the more reliable method is to use dual UPS power supply, such as many IDC computer rooms, bank business outlets, telecommunications, mobile, and many important loads in the power systems. For dual power supply, how to safely, quickly and effectively switch directly affect load reliability, especially many equipment acceptable outage time is extremely demanding, such as: outage time cannot exceed 10ms, in the face of this requirement, ordinary ATS mechanical contacts is not bear, and high speed static no contact STS and rapid power detection can quickly, safely and effectively realize double power switch.
Features:
1. Adopting fully digital control, with strong anti-interference ability and fast operation speed
2. Switching time ≤ 4ms, high reliability;
3. Strong overload capacity, able to withstand full load startup;
4. Equipped with input overvoltage, undervoltage, overcurrent and other protection functions;
5. The front panel is equipped with a display screen and indicator lights to intuitively understand the STS status information;
6. Provide STS versions that can switch between live and zero lines simultaneously, with identical appearance, structure, and performance.
Applications:
Vehicle and shipboard equipment: Railway station, transportation equipment, etc.
☎Industrial equipment: solar power, wind power, gas discharge lamps, etc.
☎Office equipment: computer, printer, copy, scanner, etc.
☎Kitchen appliances: microwave oven, induction cooker, rice cooker, etc.
☎Household electrical equipment: electric fans, vacuum cleaners, lighting fixtures, etc.
Datasheet:
|
Model Number |
STS63EM STS63FM |
STS80EM STS80FM |
STS100EM STS100FM |
STS125EM STS125FM |
|
Switch Time |
≤4ms |
|
Input |
Rated Voltage(VAC) |
220 |
|
Input Voltage Range(VAC) |
190~260 |
|
Rated Frequency(Hz) |
50 |
|
Power Factor |
1 |
|
Automatic conversion
threshold voltage |
Undervoltage:190Vac±5Vac;Overvoltage:260Vac±5Vac |
|
Automatic conversion
threshold Frequency |
Lower than:45Hz±0.2Hz;Higher:65Hz±0.2Hz |
|
Over limit protection shutdown
threshold voltage |
≤160Vac or ≥265Vac,±5V |
|
Over limit protection shutdown
threshold Frequency |
≤45Hz or ≥65Hz,±0.2Hz |
|
Overload capacity |
Continuous working @Load current≤110%; shut off @load current>110% |
|
Output |
Rated output current(A) |
63 |
80 |
100 |
125 |
|
Max output current(A) |
69 |
88 |
110 |
125 |
|
Output power (VA/W) |
15000 |
19000 |
24000 |
27500 |
|
Environment |
Dielectric Strength |
2KVAC,1min |
|
Noise(1m) |
≤55dB |
|
Working Temperature |
-25~50ºC |
|
Storage Temperature |
-40~70ºC |
|
Humidity |
0~90%,No condensation |
|
Protection Degree |
IP20 |
|
Altitude(m) |
≤3000 |
|
2000~3000m;Output derate by 2% for every 100m increase |
|
Protection Function |
Input undervoltage and overvoltage protection, output overload protection, over temperature protection, short circuit protection |
More details:
The SMPS based CONVERTER should be based on High Frequency (20 KHz and above)
Switch Mode techniques.
Resettable Fuses shall be provided, wherever appropriate, to protect the module against failure
of control / sensing circuit.
The design shall have suitable time delay / hysteresis to avoid hunting during switching ON and
OFF of the system. The module shall disconnect at 150V and reconnect at 170V AC.
Switching ON and OFF the fan shall be temperature controlled. In case of fan failure the module
shall have automatic protection to switch off the module above 70 deg centigrade and restore
automatically with reduction in temperature. It shall not cause any fire hazard. The fan shall also
be protected against short circuit by providing a fuse.
The CONVERTER modules shall have forced cooling and only DC fan shall be used.
DC Output Characteristics
The module shall be capable of operating in "Auto Float cum-Boost charger" mode. It shall be
programmed to operate as a float rectifier or a Boost charger depending on the condition of the
battery
Auto Float Mode
Float voltage of each rectifier module shall be set as given below:
Normal Float & Boost voltage for VRLA battery is 2.25V and 2.3V/Cell respectively.
For conventional battery it shall be 2.15V and 2.42V/cell, respectively.
For 110V/20Amp charger 55cells of 2V each will be used and for 48V/25A charger 24 cells of 2V
each will be used.
The module should have a range from 2.0 - 2.3V/cell in float mode & 2.2 - 2.5V/cell in boost
mode to meet the requirement of VRLA as well as conventional batteries.
The DC output voltage shall be maintained within ± 1% of the half load pre-set voltage in the
range 25% load to full load when measured at the output terminals over the full specified input
range.
Auto Boost Charge Mode
In auto boost charge mode, CONVERTER shall supply battery and equipment current till
terminal voltage reaches 2.3V (VRLA battery) /2.42V (Low Maintenance battery) per cell.and
shall change over to Auto Float mode after a defined delay of 0, 1, 2, 4 hours adjustable, to be
set as per battery manufacturer's specification.
Efficiency
The efficiency and Power factor of the CONVERTER in auto float and auto boost mode shall be
as follows:
Nominal input - 150-275V
Output - Full Load, Efficiency > 90% and Power factor >0.95 to unity
And for
Nominal input - 150-275V
Output - 25% to 100%, Efficiency > 85% and Power factor >0.9
Note: Active power factor correction circuit shall be adopted.
Total Harmonic Distortion
The total line harmonic voltage distortion shall not be more than 10%.
The total current harmonic distortion contributed by CONVERTER at the input shall not exceed
10% for all input condition and load 50% to 100% of the rated capacity.
Soft Start Feature
Slow start circuitry shall be employed such that CONVERTER module output voltage shall reach
its nominal value slowly within 10 to 20 seconds, eliminating all starting surges.
The maximum instantaneous current during start up shall not exceed the peak value of the
rectifier-input current at full load at the lowest input voltage specified.
Voltage Overshoot/Undershoot (with battery disconnected)
The CONVERTER modules shall be designed to minimize output voltage overshoot /
undershoot such that when they are switched ON, the DC output voltage shall be limited to ± 5%
of the set voltage and return to its steady state within 20 millisecond for any load of 25% to
100%.
The DC output voltage overshoot for a step change in AC mains from 150V to 275V shall not
cause shut down of CONVERTER module and the voltage overshoot shall be limited to ±5% of
its set voltage and return to steady state within 20ms.
The modules shall be designed such that a step load change of 25% to 100% or vice- versa
shall not result in DC output voltage overshoot/undershoot of not more than ±5% of the set value
and return to steady state value within 10 millisecond without resulting the unit to trip.
Parallel Operation
The CONVERTER modules shall be suitable for operating in parallel on active load sharing
basis with one or more modules of same type, make and rating.
The current sharing shall be within ± 10% of the individual capacity of each CONVERTER in the
system when loaded between 50 to 100% of its rated capacity.
Alarms & Indication of CONVERTER
The following indications, controls & measuring points shall be provided on the front panel of
CONVERTER
a) CONVERTER on Auto Float mode FLOAT Green
b) CONVERTER on Boost Charge mode BOOST Green
c) Mains available MAINS Amber
Alarm Indication with LED:
a) Rectifier module over voltage OVER VOLTAGE Red
b) Rectifier module under-voltage UNDER VOLTAGE Red
c) DC output fail OUTPUT FAIL Red
d) CONVERTER Overload/ short circuit OVERLOAD/ SHORT CIRCUIT Red
e) Fan fail FAN FAIL Red
Note: "Provision shall be made for stopping the audio alarm with a non-locking push button.
a) Float voltage adjustment (float)
b) Boost voltage adjustment (boost)
c) Overload current setting (OL)
d) Voltage monitoring point suitable for measurement by standard multimeter.
Other Popular
FAQ
Q1: What kind of EV Charger do you have?AC and DC charger with connectors Type2, CCS1/CCS2, CHAdeMO, GB/T, etc.
Q2: Do you provide customized product?
We provide OEM and ODM services for clients.
Q3: What is the delivery time of EV charger?
About 4-6 weeks.
Q4: What about your warranty of EV Charger?
Generally 2 years. Our warranty period depends on customer's requirements and we always put customer's need as priority.
Q5:How do you package it ?
A:We pack in cartons.
Q6:what's the MOQ?
A:For LOGO, color or other special requirements, a minimum of 20 is required. If you do not have these requirements you can buy
directly, we will ship within 3-10 days.
Q7:Can you produce according to the samples?
A:Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q8:Do you test all your goods before delivery?
A:Yes, we have 100% test before delivery.
Q9:What is your terms of delivery?
A:EXW, FOB, CFR, CIF, DDU.
Q10:What is your terms of payment?
A:We accept all methods of payment: paypal, T/T, credit card, Albaba assurance, West Union... Please contact us for more details.
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