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ATS022
User Manual
42 pgs2.44 Mb0

Abb ATS022 User Manual

Doc. No. 1SDH000760R0002 - L5785
Automatic transfer switch ATS022
Installation and operating instructions
Contents
Installation and operating instructions, ATS022
Contents
2.2. Times ............................................................................................................................................. 5
5.1 Interface.......................................................................................................................................17
5.5.2 Browsing through the Menu ........................................................................................................22
8.2. DIN rail-mounted Automatic Transfer Switch ATS022.................................................................38
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Installation and operating instructions, ATS022
1. Safety notes
1. Safety notes
Before using the ATS022 unit, read the following “Safety notes”: using the unit without following the indications can lead to malfunctioning and, in some cases, hazardous conditions.
If there are doubts about safe use, the unit must be put out of service. The automatic transfer switch ATS022 must be prevented from operating the circuit breakers before:
• accessing the circuit breakers
• performing maintenance on circuit breakers or any electrical circuits powered by them
• performing any operation where opening/closing the circuit breaker could be dangerous
During maintenance:
• set the "Manual" mode.
• lock the circuit breaker mechanically in the open position.
Safe use is not guaranteed if:
• the device has been damaged during transport
• the device shows visible signs of damage
• the device does not work
• the device has been stored for a long period
Even if the device seems to be in stand-by status switch it off from the control circuit, as there is risk of it operating the circuits without warning.
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2. Explanation of abbreviations and terms
Installation and operating instructions, ATS022
2. Explanation of abbreviations and terms
2.1. General information
ATS:
ATS022:
CB:
CB1:
CB2:
CB3:
LN1:
LN2:
Bus Tie:
NPL:
NPL BUS TIE:
Modbus RTU:
Automatic Transfer Switch; automatic switching device
ATS of the ATS02x series, version with display and Modbus communication.
Circuit Breaker; low voltage automatic Circuit Breaker.
CB on line LN1.
CB on line LN2.
CB for Bus Tie, NPL and NPL BUS TIE operating modes.
Power supply line No.1.
Power supply line No.2.
Operating mode with busbar tie circuit breaker.
Operating mode with non priority control circuit breaker
Operating mode with non priority control circuit breaker for non priority loads control
Communication protocol.
2.2. Times
NOTE: All the details of the times and switching logics are described in the Chapters concerned.
TS:
TCE:
TBS:
TCN:
TGOFF:
TC:
- Opening delay of main line CB, after detection of fault in mains (generator is not in use)
- Generator start delay, after detection of fault in mains (generator in use).
Closing delay of CB2 of line LN2
Opening delay of emergency line CB, after detection of stabilised voltage on main line.
Closing delay of CB1 of line LN1
Generator switching off delay, after closure of main line CB.
Delay in opening and closing of CB3 in Bus Tie application.
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Installation and operating instructions, ATS022
3. Introduction
3. Introduction
3.1 Product overview
The automatic transfer switch ATS022 is used in all installations where switching is required between two lines to ensure the supply of loads in case of a fault on one line.
ATS022 selects the power supply line by acting directly on the CBs provided on the lines: ATS022 can be used with automatic CBs and ABB SACE switch-disconnectors.
The device monitors the voltage of the main line and emergency line and records the following faults:
• Maximum and minimum voltage
• Maximum and minimum Frequency
• Phase balance
• Voltage imbalance
• Frequency imbalance
ATS022 does not require an auxiliary safety power supply since it is powered directly by the line voltages.
If both lines are absent, ATS022 enters Powersave mode (maximum duration 1 minute) in which the device is active and in stand-by for one of the power supply lines to be restored. When the Powersave period ends, the LED switches off and the device awaits a line voltage. The moment the main or the emergency line is restored, the unit analyses the conditions of the lines monitored and the status of the circuit breakers and proceeds with the switching operation in accordance with the situation concerned.
The safety auxiliary supply is obligatory in the following cases:
• utilisation of Modbus RS485 communication
• utilisation in systems with rated frequency 16 2/3Hz
• utilisation in single-phase systems with Un 57,5…109VAC
A 24VDC ….110VDC auxiliary safety power supply can be used (-10%, +15%).
ATS022 can be used in systems with rated frequency 50Hz, 60Hz, 400Hz, 16 2/3 Hz that can be set from the menu.
The device can be used in systems with single-phase, three-phase with Neutral and three-phase without neutral, setting can be done from the menu. ATS022 makes it possible to select from the display a different distribution system between Line LN1 and Line LN2. ATS022 can be used in manual or automatic mode. In the first case the circuit breakers must be controlled by means of the pushbuttons present on the front panel of the device, while in automatic mode, the switching logic is controlled directly by the device
The device is equipped with a front graphic display by means of which the user can check the settings and display the status of the unit and the circuit breakers connected to it.
It is also possible to integrate the ATS022 device inside a communication network which uses the Modbus RS485 protocol.
3.2 Application scenarios
The ATS022 device can be used in the following applications:
• Main line – Emergency line switching
• Main line – Emergency generator switching
ATS022 makes it possible to operate a thrid circuit breaker CB3 and can therefore also be used in the following applications which can be set on the menu:
• non priority loads control with CB3 on starting line (3CBs NPL)
• non priority loads control with CB3 Bus Tie (3CBs NPL Bus Tie)
• control of two independent power supply lines separated by Bus Tie (3CBs Bus Tie)
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3. Introduction
The ATS022 also makes it possible to select which of the lines is the main one and which one is secondary, also with the system running.
The following selections are possible, set from the menu:
• Main line: Line LN1
• Main line: Line LN2
• No priority line
In automatic mode, it is possible to select whether or not the switching procedure must include inverse switching.
The following selections are possible:
• with inverse procedure
• without inverse procedure
Installation and operating instructions, ATS022
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Installation and operating instructions, ATS022
4. Applications of device ATS022
4. Applications of device ATS022
The ATS022 device controls all the switching sequences by applying the time delays that can be set:
Time delays Description Value
Opening delay of main line CB after detection of a fault in the
TS Delay
TBS Delay Opening delay of emergency line CB. 0…59s, 1,2,3…30min
TCE Delay Closing delay of line LN2 CB2 0…60s
TCN Delay Closing delay of CB1 of line LN1. 0…60s
TC Delay
TGOFF Delay Generator switching off delay after closure of line LN1 CB1. 0…59s, 1,2,3…30min
Table 4.1: Description of time delays
4.1 Switching Main Line – Emergency Line (2CBs)
Description
Both lines are normally present; in cause of anomaly on the main line,
ATS022 switches to the emergency line used as the reserve line.
mains (Generator is not in use)
Generator start delay after detection of a fault in the mains (Generator in use).
Opening and closing delay of CB3 if used in Bus Tie application.
0…30s
0…60s
KA00428
Figure 4.1: 2CBs application layout – generator not in use
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4. Applications of device ATS022
Installation and operating instructions, ATS022
Time diagrams
Line 1 ok
CB1 CLOSED
Line 2 ok
CB2 CLOSED
TS
TCE
TBS
TCN
Figure 4.2: 2CBs application time diagram - main line LN1
4.2 Switching Main Line – Emergency generator (2CBs)
Description
In case of main line failure ATS022 automatically starts up an emergency generator and, as soon as power on the generator side is available, ATS022 starts the automatic switching procedure.
KA00427
Figure 4.3: 2CBs application layout – generator in use
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G
Installation and operating instructions, ATS022
4. Applications of device ATS022
Time diagrams
Line 1 ok
CB1 CLOSED
Gen start
Line 2 ok
CB2 CLOSED
TS TCE TCNTBS TGOFF
Figure 4.4: 2CBs application time diagram - generator in use
4.3 Non priority loads control (NPL)
Description
In case of main line failure the ATS022 starts the switching procedure and controls the non priority loads by opening closing circuit breaker CB3.
ATS022 acquires the CB3 open/close status from the dedicated input DI11 and commands the opening and closing by activating output DO11.
The application of non priority loads requires the use of two CT-AWE typed timed relays for operating the opening and closing of CB3.
Two configurations are possible for utilisation depending on the position of circuit breaker CB3:
• CB3 in Bus Tie position (3CBs NPL – BUS TIE)
• CB3 on starting line (3CBs NPL).
It is possible to select from two options from the menu on the display:
• only disconnection of non priority loads by opening CB3 (manual re-closure). In this case timed relays CT-AWE are not necessary
• disconnection and re-connection of non priority loads by opening and closing of CB3
For more details refer to the wiring diagrams of the product.
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4. Applications of device ATS022
Installation and operating instructions, ATS022
CB1
CB3
NPL
Figure 4.5: Application layout 3CBs NPL BUSTIE
CB1
CB3
NPL
Figure 4.6: Application layout 3CBs NPL
CB2
CB2
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Installation and operating instructions, ATS022
4. Applications of device ATS022
Time diagrams
Line 1 ok
CB1 CLOSED
Gen start
Line 2 ok
CB2 CLOSED
CB3 CLOSED
TS
TCE
TBS
Figure 4.7: Application time diagram 3CBs NPL BUS TIE - generator in use
Line 1 ok
CB1 CLOSED
TCN
TGOFF
Line 2 ok
CB2 CLOSED
CB3 CLOSED
TS TCE TCNTBS
Figure 4.8: Application time diagram 3CBs NPL BUS TIE - generator not in use - main line LN1
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4. Applications of device ATS022
Line 1 ok
CB1 CLOSED
Gen start
Line 2 ok
CB2 CLOSED
CB3 CLOSED
TS TCE TCNTBS
Installation and operating instructions, ATS022
Figure 4.9: Application time diagram 3CBs NPL- generator in use
Line 1 ok
CB1 CLOSED
TGOFF
Line 2 ok
CB2 CLOSED
CB3 CLOSED
TS TCNTBS
TCE
Figure 4.10: Application time diagram 3CBs NPL - generator not in use - main line LN1
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