ATS l AU AUTOMATIC TRANSFER SWITCH
MASCHINENBAU HALBERSTADT GROUP, building on its 60 years legacy in power
generation, introduces a novel design of Automatic Changeover Switch ideally suited
for quick, safe and reliable transfer of load between two energy supply sources automatically.
INDEX
POWER GENERATION
1
MAIN APPLICATION
2
GENERAL CHARACTERISTICS
3
ATS CONTOLLER
6
MANUAL OPERATION
10
DIMENSIONS
12
CATALOG NO.
16
www.MBHelectric.de
POWER GENERATION
EXPERTISE
Several decades of experience and contribution to power generation technology have
allowed Maschinenbau Halberstadt GmbH to conceptualize and tailor the ideal low
voltage transfer switch that enables:
■■ Quick, safe and reliable transfer.
■■ Secure isolation.
■■ Minimum energy consumption.
■■ Minimizing downtime and service continuity.
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MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
MAIN APPLICATIONS
The transfer switch serves as an equipment to transfer load supply service
between two sources.
■■Utility to Generator
For application with single utility feeder and a standby generator source. The
transfer switch senses loss or abnormality in utility voltage then issues a remote
start signal to the standby generator and transfers the load. Load is transferred
back under normal utility conditions.
LOAD
■■Generator to Generator
For application in a power system with multiple site generators. Load is
transferred to secondary generation in the events of failure or scheduled
maintenance.
LOAD
■■Utility to Utility
For application with multiple utility feed. Transfer from one source to another is
enabled in case of scheduled maintenance of source failure.
LOAD
■■Multiple Source System
Multiple Source Systems may include multiple redundant utility feeds and/or
multiple standby generators.
Load is transferred to standby source in the event of utility (ies) failure in the
case of multiple utility feeds.
Load transfer to secondary generator is accomplished following the failure of
both utility and standby generators.
LOAD
2
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GENERAL CHARACTERISTICS
The ATS is intended for use in low voltage power networks in order to reduce and
virtually eliminate outage periods of critical loads. The ATS ratings range from 100A
to 3000A to cover the widest range of industrial, commercial and residential needs.
MBH AU’s unique design is optimized to ensure personnel safety, equipment protection
and virtually eliminating outages thus combining safety, reliability and fast response. It
is widely trusted to maintain service of critical and non-critical processes online at all
time to enhance our client’s manufacturing capabilities.
■■ Extended product lifetime through minimization of arcing time.
■■ On-Load Switching.
■■ 3 Stable switch positions (Main Source, Neutral, Emergency Source).
■■ Manual Bypass Capabilities.
■■ Dual switching strategies:
Main ←→ Emergency or Main ←→ Neutral ←→ Emergency.
■■ Individual phase enclosure and arc chamber to improve breaking capacity.
■■ Enhanced main contact protection & breaking capacity.
■■ Easy to maintain.
■■ High transfer capabilities for inductive and motor loads.
Safety
■■ All phases are fully insulated, each in its unique structure.
■■ The breaking chambers are fully enclosed to prevent contact
with any live parts
caused by insulation degradation following an arcing event.
■■ Safe conductive performance is ensured by applying adequate contact pressure at
all times during operation.
Compact Design
■■ The
compact and unique design allows for switching between main source and
emergency source through the use of one coil.
■■ The uniquely structured arc shute reduces the arc breaking time leading to longer
contact lifetime.
■■ Stable breaking is ensured by the use of a breaking spring for tripping operations.
■■ Low loss and low energy consumption due to the application of instantaneous
excitation mode.
■■ Both direct source transfer and transfer through neutral stable position are possible.
Arc Chamber
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MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
■■AU Technical Description
AC 23B
4
AC 23B
AC 23B
AC 23B
www.MBHelectric.de
AC 23B
AC 23B
AC 23B
AC 23B
AC 23B
5
MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
AUC 173
DIN RAIL MOUNTED
Features
■■ DIN Rail mounted.
■■ No DC supply required.
■■ Adjustable MCB and GCB delays.
■■ 10A/250VAC MCB and GCB outputs.
■■ 10A/28VDC/250VAC remote start output.
■■ Isolated mains and genset inputs.
Inputs
■■ R-S-T: Mains phase voltages.
■■ NEUT-MN: Mains neutral terminal.
■■ G: Generator phase voltage.
■■ NEUT-GN: Generator neutral terminal.
Outputs
■■ MCB-MAINS Contactor: Normally open relay output connecting the phase-R voltage to the terminal. (10A@250V-AC)
■■ GCB-Generator Contactor: Normally open relay output connecting the phase-G voltage to the terminal. (10A@250V-AC)
■■ Remote Start: Normally open engine start request relay output. (10A@28V-DC/250V-AC)
Technical Specifications
■■ Alternator Voltage: 170-300 V-AC (Ph-N).
■■ Mains Voltages: 170-300 V-AC (Ph-N).
■■ Generator Contactor Delay: 1 to 40 sec. adjustable.
■■ Mains Return Delay: 1 to 40 sec. adjustable.
■■ MCB Relay Output: 10A @ 250V-AC.
■■ GCB Relay Output: 10A @ 250V-AC.
■■ Remote Start Relay Output: 10A @250V-AC/28V-DC.
■■ Operating temp.: -30°C (-22°F) to 70 °C (158°F).
■■ Storage temp.: -30°C (-22°F) to 80 °C (176°F).
■■ Maximum humidity: 95% noncondensing.
■■ Dimensions: 70x115x66mm (WxHxD).
■■ Weight: 180g (approx.).
■■ Installation: DIN Rail mounted.
■■ Case Material: High Temp. ABS/PC (UL94-V0).
■■ IP Protection: IP20.
■■ Conformity (EU directives).
2006/95/EC (low voltage).
2004/108/EC (EMC).
■■ Norms of reference:
■■ EN 61010 (safety requirements).
■■ EN 61326 (EMC requirements).
■■
■■
6
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7
MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
AUC 329 ATS CONTROLLER
WITH MULTIPLE GENSET
SUPPORT
Features
■■ Automatic contactor control.
■■ Synchroscope & check synch.
■■ No break transfer & no break load test.
■■ Multiple genset system support.
■■ Electrical protections for genset.
■■ Built in alarms and warnings.
■■ Load shedding, dummy load.
■■ Periodic maintenance request indicator.
■■ Built in daily / weekly / monthly exerciser.
■■ Event logging with time stamp and measurements.
■■ Statistical counters.
■■ Battery backed-up real time clock.
■■ Weekly operation schedule programs.
■■ 3 level password system.
■■ Field adjustable parameters.
■■ RS-232 serial port.
■■ Firmware downloadable from serial port.
■■ Free MS-Windows Remote monitoring SW:
Local and modem connection.
Monitoring, download of parameters.
■■ Modem networking.
■■ GSM and PSTN modem support.
■■ GSM SMS message sending on fault.
■■ MODBUS communications.
■■ Graphic LCD display (128x64 pixels).
■■ User friendly graphic indicators.
■■ Triple language support.
■■ Customer logo display capability.
■■ Configurable digital inputs: 7.
■■ Configurable digital outputs: 2.
■■ Total digital outputs: 6.
■■ I/O expansion capability.
■■ Survives cranking dropouts.
■■ Sealed front panel.
■■ Plug-in connection system for easy replacement.
■■
■■
Inputs
The unit has 7 configutable digital inputs. Each input has following
programmable parameters:
■■ Alarm type: shutdown / load-dump / warning / no alarm.
■■ Alarm polling: on engine running / always / on mains OK.
■■ Latching / non-latching operation.
■■ Contact type: NO / NC.
■■ Switching: BAT+ / BAT.
8
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Outputs
The unit provides 6 digital outputs and 2 of them have programmable functions, selectable from a list. Any function or alarm
condition may be output as a relay output. Using two Relay Expansion Modules, the number of relays may be increased to 22, 16
of them being volt-free contacts.
■■ Alternator voltage: 0 to 300 V-AC (Ph-N).
■■ Alternator frequency: 0-100 Hz.
■■ Mains voltage: 0 to 300 V-AC (Ph-N).
■■ Mains frequency: 0-100 Hz.
■■ DC Supply Range: 9.0 to 30.0 V-DC.
■■ Cranking dropouts: survives 0 V for 100ms.
■■ Typical Standby Current: 100 mA-DC.
■■ Maximum Operating Current: 200 mA-DC. (Relay outputs open)
■■ Generator/Mains Contactor Relay Outputs: 16 A / 250V.
■■ Current inputs: from CTs, .../5A. Max load 0.7VA per phase.
■■ Serial port: RS-232, 9600 bauds, no parity, 1 bit stop.
■■ DC Outputs: 1A @ 28V.
■■ Operating temperature: -20°C (-4°F) to 70 °C (158°F).
■■ Storage temperature: -40°C (-40°F) to 80 °C (176°F).
■■ Maximum humidity: 95% non-condensing.
■■ Dimensions: 165 x 125 x 48 mm (WxHxD).
■■ Panel Cut-out Dimensions: 151x111 mm minimum.
■■ Weight: 300 g (approx).
■■ Case Material: High Temperature ABS/PC (UL94-V0).
■■ IP Protection: IP65 from front panel, IP30 from the rear.
■■ Conformity (EU directives).
■■ 2006/95/EC (low voltage).
■■ 2004/108/EC (electro-magnetic compatibility).
■■ Norms:
■■
■■
EN 61010 (safety requirements).
EN 61326 (EMC requirements).
9
MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
MANUAL OPERATION
Manual operation is made feasible through the use of a handle connected to the side of the ATS and by making use of a metal pin
to control source selection and tripping.
■■Manual Bypass to Source A
■■Source A: ON
■■Manual Bypass to Source B
■■Source B: ON
■■Trip
■■Source A: OFF
■■Source B: OFF
■■ CAUTION: ATS Manual operation should be carried out under no load conditions and after careful inspection of live parts.
10
www.MBHelectric.de
OPERATING CONDITIONS
■■Ambient Conditions
Avoid installation in humid areas, locations with risk of exposure to poisonous gas and high temperature places.
■■Orientation
The ATS is designed to be installed in a specific direction as highlighted in the figure. The ATS feature and performance may be
subject to variation if the installation orientation changes. Ideally, the ATS should be installed so as the nameplate can be read
properly facing the front and without any twist or bending of any ATS components.
■■Control Circuit Connection
Use low voltage control/power cable with sufficient length. In case of DC supply, make sure to take into consideration battery and
charging characteristics.
■■Main Circuit Connection
Connect firmly by selecting appropriate wire sizes and solderless terminals. Avoid applying excessive stress to the main circuit
terminal.
■■Maintenance & Inspection
Conduct maintenance and inspection at regular cycles in order to maintain the ATS performance.
■■Recommended
■■NOT Recommended
11
MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
AU DIMENSIONS
■■AU 100A - AU 200A (Front)
Type
3P
4P
A
234
264
B
133
163
■■AU 400A (Front)
12
Type
3P
4P
A
287
338
B
192
243
www.MBHelectric.de
■■AU 600A - AU 1000A (Front)
AU600
AU800
AU1000
3P
4P
3P
4P
3P
4P
A
340
400
400
480
400
480
B
224
284
284
364
284
364
C
220
220
239
239
239
239
D
30
30
31
31
31
31
E
40
40
40
40
50
50
F
20
20
40
40
30
30
G
60
60
80
80
80
80
H
5
5
8
8
10
10
I
36
36
42
42
42
42
J
60
60
54
54
56
56
K
248
248
267
267
267
267
L
58
58
80.5
80.5
79.5
79.5
M
53
53
63
63
63
63
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MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
■■AU 1200A - AU 1600A (Front)
AU1200
A
14
AU1600
3P
4P
3P
4P
452.7
535.7
452.7
535.7
B
328
411
328
411
C
419.4
419.4
419.4
419.4
D
534.4
534.4
534.4
534.4
E
50
50
50
50
F
27
27
27
27
G
33
33
33
33
H
83
83
83
83
I
94.5
94.5
94.5
94.5
J
25
25
25
25
K
12
12
12
12
L
69
69
69
69
M
55
55
55
55
N
153.7
153.7
153.7
153.7
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■■AU 2000A (Back)
AU1200
3P
4P
A
527.7
635.7
B
403
511
C
-
-
D
-
-
E
75
75
F
40
40
G
33
33
H
108
108
I
107
107
J
-
-
K
15
15
L
-
-
M
-
-
N
152.2
152.2
15
MBH ELECTRIC | AU AUTOMATIC TRANSFER SWITCH
■■AU 3000A (Back)
AU3000
3P
4P
A
602.7
735.7
B
478
611
C
25
25
D
142.2
142.2
CATALOG NO.
AUTOMATIC TRANSFER SWITCH
Model
AU Automatic Changeover Switch
Switch Type
S Standard AC
3
4
16
** Specify Protection Index
Poles
3P
4P
Supply voltage (shunt trip)
220
220V
110
110V
Installation
F Front Connection
B Back Connection
0100
0200
0400
0800
1000
Controller
c1 AUC 329
c2 AUC 173
Current Rating
100A
1200
200A
1600
400A
2000
800A
2500
1000A 3000
Enclosure
1200A
1600A
2000A
2500A
3000A
** Protection Index
Authorized Distributor – India
Bliss Electricals Pvt.Ltd.
SA42 A&B, 2nd Floor, Lake City Mall,
Kapurbavdi Junction,
Thane(W) - 400607
Landline - 0091 - 22 - 25368609
Cell - 0091 9819137944
e-mail - kane.shriram@blisselectricals.com
www.blisselectricals.com
MBH Middle East & Africa
Halat, Lebanon
T. +961 9 444 888
middleeast@MBHelectric.de
MBH Gulf
Baniyas Complex
Nasser Square Al Rigga Area
Deira, Dubai, UAE
T. +971 4 239 5954, F. +971 4 239 5944
dubai@MBHelectric.de
Maschinenbau Halberstadt GmbH (HQ)
Rudolf –Diesel-Strasse 50
Halberstadt 38820
Germany
T. +49 1577 3394 113, F. +49 3941 24036
info@MBHelectric.de
www.MBHelectric.de
© 2013 Maschinenbau Halberstadt Gmbh
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