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Быстродействующие АВР (STS)
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Быстродействующие АВР (STS) / /

Modern data and telecommunication systems require a power supply with maximum reliability and availability.AEG_STS_02.jpg(small)
Down-times are not acceptable nowadays , even during maintenance the redundancy has to be ensured. The Protect STS offers the possibility to switchover between two independent AC power
sources.

Protect STS provides an effective solution for redundancy:

• Complete seperation of the two power sources including associated input lines
• Separation of the load to protect against mutual disturbances
• Supplies loads from two sources (e.g. UPS which are different power ratings and types)

Application

Static Transfer Switches (STS) are designed to transfer supply between independent one-phase or three-phase AC power sources. Unlike traditional automatic transfer switches (ATS), STS provides 20 times faster load transfer (typically 1/4 of a cycle), which ensures the uninterrupted operation of even the most sensitive electronic equipment. Load retransfer to preferred input source is virtually instantaneous (typically 100 μs).The basic applications of STS are in automatic systems for the power industry, computer and telecommunication centres, automation and security systems of ‘intelligent’ buildings as well as other equipment which is highly sensitive to supply interruption. It’s high overload capacity and transfer algorithm enables rapid fuse blowing during short-circuits. As a consequence the voltage immediately returns to normal value to supply other loads. The built-in transient voltage surge suppression system for SCR switches provides additional protection against damage to supplied devices.

Control Panel

All Protect STS are equipped with LED indicators and control panel. Three buttons on the Control Panel determine the current operation mode: OPERATION, RETRANSFER and PREFERRED SOURCE.

The STS operates in one of the following three modes:

Preferred source mode

The selected preferred source supplies the load. The load is transferred
to the other source if the voltage of the preferred source is
outside acceptable range.

Automatic retransferring mode

After a transfer triggered by disturbances in the preferred source,
the load is transferred again to the preferred source with a delay
(time is set by DIP switches) if the preferred source is healthy again.

Manual mode

Connections are set manually (not automatically)

Краткое описание

Презентация

AEG_STS_03.jpg(small)Protect_STS_Control_Panel.png(small)

 

 

MODEL

P3.33-10

РЗ.ЗЗ-20

 

Rated input voltage

3 x 400 Vrms phase to phase

TN-C, TN-S

 

Acceptable changes of input voltages

-25% +20%

 

 

Frequency

60Hz

 

 

Acceptable changes of frequency

-9% +6%

 

 

Voltage surge withstand

<1.5 kV

<1.0 kV

limp 15 kA 8/2011s hmp 5 kA 8/20 ps

 

Voltage insulation

AC 2 kV 60 s

 

 

Efficiency

>99%

cos (ɸ) > 0.8

 

Nominal output current

63 A, 150 A, 250 A, 400 A 2 poles

63 A, 150 A, 250 A, 630 A, 1000 A 3 poles

63 A, 150 A, 250 A, 630 A, 1000 A 4 poles

63 A 2 poles, 3 poles and 4 poles as 19 inch rack version

 

Maximum crest factor

3.5

 

Power factor cos (ɸ)

0.5-1

lag, lead

 

Voltage surge withstand

<1.5 kV

<1.0 kV

For Iimp 15 kA 8/20 μs

For Iimp 5 kA 8/20 μs

 

Overload capacity

125%

400%

800%

1000%

1500%

t=1 h

t=5 s

t=0.4 s

t=0.2 s

t=20 ms

 

Short-circuit strength of thyristros witches

3 kA/20 ms

8 kA/20 ms

15 kA/20 ms

28 kA/20 ms

ln-63 A

In-150 A

ln-250 A, 400 A

ln-630 A

 

Fuse interrupting capacity

50 kA

 

Preferred source selection

Primary source or

Secondary source

With retransfer or without retransfer after disturbance clears

 

Remote preferred source selection

Primary source or

Secondary source

Remote relay selection for preferred source

 

0ver voltage level setting

+6%

+9 %

+13%

+16%

+20%

Transfer is performed when voltage value crosses the level Programmed by DIP switch selection

 

Under voltage level setting

-8%

-12 %

-16%

-20%

-24 %

Transfer is performed when voltage value crosses the level. Setting by DIP switch

 

Phase delay limit for synchronised lines

±8°

±12°

±16°

±20°

±24°

Setting by DIP switch

 

Switching interlock for output over current

3 In

4.5 In

6 In

7.5 In

9 In

No interlock

Setting by DIP switch

 

Manual transfer time for synchronised lines of a phase error within the limits

<0.2 ms

 

 

Automatic transfer time for synchronised lines of a phase error within the limits

< 6 ms

 

 

Transfer delay in manual or automatic mode without synchronisation

13 ms

17 ms

25 ms

50 ms

Setting by DIP switch

 

Retransfer to preferred line delay with both lines operational

0.9 s

1 s

8 s

25 s

Setting by DIP switch [both lines healthy)

 

Failure alarm

relay

fuse failure overload over temperature internal STS failure

 

Disturbance alarm

relay

primary source not healthy secondary source not healthy lack of synchronisation transient voltage surge suppresses alarm manual control ON automatic retransfer OFF

 

Manual ON

relay

service operation

 

Retransfer OFF

relay

retransfer to preferred line is not performed

 

Primary source OK

relay

indicating if primary source в healthy

 

Secondary source OK

relay

indicating if secondary source is healthy

 

Primary source ON

relay

indicating if primary source is active

 

Secondary source ON

relay

indicating if secondary source is active

 

Maximum operational voltage

300 VDC or 2S0 VAC

 

 

Maximum current

4 A for 220 VAC 02 A for 220 VDC

 

 

 

RS232/RS485

 

 

Operating temperature

0 to 40° С

 

 

Storage temperature

0 to 40° С

 

 

Humidity

max 98%

Without condensation

 

Maximum altitude

1000 m

 

 

Cooling

Natural Forced with built-in fan redundancy

For In=63 A

For In=150 A, 250 A, 400 A, 630 A

 

Acoustic noise

Below 55 dBA

 

 

Protection

IP20

 

 

EMC

Class В

EN5S022. EN605SS-2.3

Назад