HomeMy WebLinkAboutTRANSFER SWITCH OWNER'S GUIDEGeneral Description
ection 2: General Description smmw
kutomatic Transfer Switch (ATS)
he Automatic Transfer Switch (ATS) transfers critical
lectrical loads from a utility (normal) power source to a
enerator (standby) power source. Transfer of electrical
)ads occurs automatically when the utility power source
fits or is substantially reduced and the generator source
oltage and frequency are at an acceptable level. The
TS also prevents electrical feedback between the
ifferent power sources and is required by code in all
tandby installations.
nsfer Switch Models
Figure 2-1. Two transfer switch models are
bed herein: RTSB (U.S.) and RTSI (Canada).
RTS B
(U.S.)
RTS 1
(Canada)
003005
Figure 2-1. 'Transfer Switch Models
UT
8_L,,�4
Overload Prevention Control
Board (OPCB)
M
(N Electrocution. Turn utility supply OFF before
working on utility connections of the transfer
switch. Failure to do so will result in
death or serious injury. (000123)
j2,'
14 Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
(000129)
IMPORTANT NOTE: Also turn OFF the generator
(standby) power supply before connecting power
source and load lines to the transfer switch.
NOTE: All loads greater than 10 kW (9 kW if running on
Natural Gas) or 2HP (motors) must be connected to the
OPCB.
OPCB/PMM Connection
See Figure 2-2. When fully functional, the Overload
Prevention Control Board (OPCB) manages six loads —
two A/C units, and four general use contactors. The
general use contactors are used to power any typical
load, such as a well pump or room lighting circuit.
/.%= M
ac l.. J
]10AD17117
C
AIC2 'Aw
LOAD
1A_ 2
1
LOAD
'A- z 003006
A
Air Conditioner
Connections
Control up to two A/Cs using 24V
low voltage thermostat wires
B
Status LEDs
Illuminate to indicate loads
currently allowed to run
Control up to four loads using four
C
Load Connections
PMMs and one transformer
(purchased separately).
Transfer Switch Owner's Manual
Figure 2-2. Overload Prevention Control Board
Description
The O ICB is hard wired to control the two A/C units (A/C
1, A/C) and comes ready for use without additional
parts.
The fl lur general use contactors need additional
hardw �i�e to become functional. The hardware, which is
purchaed separately, is contained in two kits:
Po;er Management Module (PMM) Starter Kit,
Pali No. 0061990. Includes one PMM with
tra sformer. The transformer, which is mounted to
the.11 subplate inside the ATS enclosure, interfaces
wit the OPCB to generate the 24 VAC signal
ne ded for control of the selected general use
co I tactor (Load 1, 2, 3, or 4).
Po ver Management Module (PMM), Part No.
00 1860. To achieve full system functionality, a total
of hree PMMs are required to allow control of the
thr a remaining general use contactors on the
O 1CB.
NOTE The Starter Kit must be purchased to enable use
of PMlls. PMMs will not function without installation of
11
the tra i sformer included in the Starter Kit.
See Load Management for additional information.
Stan rd Load Shed Mode
When configured for full functionality, six loads are
organi �ed into four priority groups. Priority 1 (A/C 1) and
the asipciated general use contactor (Load 1) is the
highest priority and is usually the first load(s)
reconr ted, except in fast load shed mode. Priority 4
(Load ii)cis the lowest priority and is usually the last load
recon cted, except in fast load shed mode. The priority
group flare as follows:
• Priority Group 1—A/C 1 and Load 1
• Priority Group 2—A/C 2 and Load 2
• Priority Group 3—Load 3
• Priority Group 4—Load 4
Since 4JC is typically considered the most important, it is
hard4ed as the two highest priority levels (A/C 1, A/C
2). Two other equally important loads are wired to the
assocated general use contactors (Load 1, Load 2).
Less I'mportant loads are wired to the remaining
conta ,ors (Load 3, Load 4).
If thl OPCB is fully functional and managing six
conne ted loads, and an event occurs which causes a
load t increase beyond generator capacity, the OPCB
identi 'es an overload condition and instantly sheds all
loads. fter five minutes elapse, the OPCB reconnects
the to ds associated with Priority Group 1 (A/C 1, Load
1), antl then reconnects the remaining loads at fifteen
second intervals. If the OPCB sees another overload
while ',�„{ is reconnecting loads, the offending load is shed
and locked out for 30 minutes. The next load in the
sequence is then reconnected. This process continues
until all loads have tried to reconnect.
Standard Load Shed
Elapsed Time
Event
5 minutes
Priority group 1 reconnects
15 seconds later
Priority group 2 reconnects
15 seconds later
Priority group 3 reconnects
15 seconds later
Priority group 4 reconnects
Synergy Fast Load Shed Mode
Specially designed for use with the Synergy product, the
OPCB features "Fast Load Shed" capability that
effectively prevents large loads from stalling the engine.
If the generator senses the application of a large load
greater than 10 kW (9 kW if running on Natural Gas)
or 2HP (motor) while running at low speed, all loads are
instantly shed. The engine is then instructed to run at
3600 RPM. Six seconds later, Load 3 is reapplied. Fifteen
seconds after application of Load 3, Load 4 is reapplied.
After a five minute delay to prevent damage to the air
conditioner motors, Load 1 is reapplied. Fifteen seconds
after application of Load 1, Load 2 is applied..
Synergy Load Shed
Elapsed Time
Event
Start at
6 seconds
Priority group 3 reconnects
the same
15 seconds
Priority group 4 reconnects
time
5 minutes
Priority group 1 reconnects
—
1 15 seconds later
I Priority group 2 reconnects
0
Automatic Transfer Switch Owner's Manual
General Description
�reiiminary instructions
npack Transfer Switch
:fully unpack the transfer switch. Inspect closely for
damage that might have occurred during shipment.
purchaser must file with the carrier any claims for
or damage incurred while in transit.
'y that all packing material is removed from the
3fer switch prior to installation.
istalling Transfer Switch
he transfer switch was wired and tested at the factory
efore packaging. Installing the switch involves the
)flowing procedures:
Mount transfer switch; connect utility source,
customer load, and generator source leads; connect
customer control wires; manually exercise transfer
switch.
• See RTSB Mounting and Installation or RTSI
Mounting and Installation.
Install transformer and PMMs.
• See Load Management.
Perform functional tests to verify system operation.
• See Testing.
TOTE: Wiring diagrams and physical dimensions of
each model are provided in Wiring and Installation
OTE: All installations must comply with national, state
id local codes. It is the responsibility of the installer to
3rform an installation that passes final electrical
spection.
Use of Transfer Switch
o prevent accidents and/or equipment damage,
arefully read Introduction and Safety before installing,
perating or servicing this equipment. Post a copy of
itroduction and Safety near the transfer switch for
uick and easy reference. Carefully read all information
nd instructions found on any decals, labels, or tags
ffixed to the equipment.
refer to the following publications for additional
iformation on the safe use of transfer switches:
NFPA 70; National Electrical Code
NFPA 70E; Standard for Electrical Safety in the
Workplace
UL 1008, Standard For Safety -automatic Transfer
Switches
OTE: Always use the latest version of any standard to
isure the most complete and current information.
Transfer Switch Owner's Manual 7
RTSB Mounting and Installation
ection 3: RTSB Mounting and Installation
unt Transfer Switch
emove Covers
I
1. See Figure 3-1. Remove thumbscrew (B) next to
the padlock hasp (C) and remove outside cover (D)
from enclosure.
E
F
`JN/NNvm
QWARNING
Record Serial and Model Numbers
1. See Figure 3-2. The Transfer System Data decal
(G) is attached to the inside wall (top left side) of
the transfer switch enclosure.
O no
ems}:
G
Figure
® :QId\1 0% ' ZIZ!irlOj
O o o
0
0
0 0
O m 003008
1-2. Transfer System Data Decal
Information on the decal is required when requesting
information or ordering service parts. For quick and easy
reference, record the Serial and Model numbers printed
on the decal in the space provided on the front cover of
this manual.
Remove Subplate
1. See Figure 3-3. Using a flat -bladed screwdriver,
O 0 O loosen terminal screw (H) from grounding bar (J) to
release green neutral bonding cable (K).
003007
Figure 3-1. Remove Transfer Switch Covers
2. Remove hex nut (E) from threaded stud at bottom of
enclosure and remove inside cover (F).
IOTE: For best results, disengage slotted tab at bottom
f cover from threaded stud before disengaging top from
otches in enclosure.
'.o ipZ�/i :Q5
r,
oT�
Figure 3-3. Remove Subplate From Enclosure
2. Remove four flange nuts (L) from weld studs at
each corner of subplate.
3. Remove subplate (M) with transfer switch
assembly from weld studs.
4. Carefully lay subplate on a flat surface to prevent
accidental damage.
5. Remove three flat washers from each weld stud.
Transfer Switch Owner's Manual 9
RTS131 Pounting and Installation
Mount Enclosure
Electrocution, equipment and property damage.
Handle transfer switches carefully when installing.
Never install a damaged transfer switch. Doing so
could result in death or serious injury, equipment
and property damage. (000195)
The tr' 'nsfer switch enclosure can be mounted inside or
outsid 1 1 Install the transfer switch no more than six feet
(183 ) from the utility disconnect and as close as
poss4, ��to the electrical loads to be connected.
1. Petermine suitable location for mounting of transfer
2. "'i ounting hardware is not provided. Obtain
appropriate hardware for securely mounting
nclosure to solid structural surface or rigid
ipporting structure.
3. osition enclosure vertically against structural
�I rface and use a pencil to trace four mounting
Iles. See Wiring and Installation Diagrams for
v iring diagrams and physical dimensions of
closure.
NOTE Centerline of Utility Service Disconnect Circuit
Break ,. should be no more than six feet (183 cm) from
the grc end.
4. 11
Illecurely fasten enclosure to structural surface.
5. N erifv that enclosure is level.
Rout ei Wiring
1. Run conduit and wires to area of enclosure.
2. tudy enclosure to determine entry points for utility
°1ource, generator source, and customer load
firing conduit. Six knockout plugs are provided for
Ige as needed.
3. F emove knockout plugs as follows:
Use a pencil to mark the center of the knockout
plug.
Use a punch to make a divot in center of mark
c.1 Cover bottom of enclosure with clean shop
cloth to collect metal shavings.
NOTE: Metal shavings have sharp edges that can nick,
cut or, abrade wire insulation, possibly resulting in
equipm nt failure. Thoroughly clean enclosure of
constru�lbtion debris and metal chips.
di Drill pilot hole using divot as a guide.
e� Install knockout punch (slide hammer) and
remove plug.
f. Use a round file to remove any metal debris
around hole and to smooth sharp edges.
g Install grommet in knockout plug hole.
h. Carefully remove shop cloth.
I. Thoroughly clean area of any metal shavings
not collected by the shop cloth.
IMPORTANT NOTE: Avoid drilling into the top of the
enclosure when the unit is to be located outside. If
this is not possible, install a water -tight fitting to
prevent water or moisture from entering or
accumulating within the enclosure.
Install Subplate
1. See Figure 3-4. Install three flat washers (A) onto
each of four weld studs in enclosure.
003010
Figure 3-4. Install Flat Washers on Studs
2. Install subplate with transfer switch assembly onto
weld studs.
3. Install four flange nuts onto weld studs, and
alternately tighten in a crosswise pattern until snug.
4. Install green neutral bonding cable to grounding
bar, and tighten terminal screw as shown in Table
3-1.
Table 3-1. Neutral Bar Torque Specifications
Switch Rating Torque
200A 275 in-lbs. (2.1 Nm)
10
Automatic Transfer Switch Owner's Manual
RTSB Mounting and Installation
ae Figure 3-5. Check label (E) attached to front of
side cover to verify torque specification.
fV1 N2
003012
Figure 3-5. Torque Specifications Labels
Connect Utility, Customer Load and
Generator Leads
Install Utility Source Connections
1. See Figure 3-6. Remove two screws (A) and
plastic cover (B) from utility source lugs.
003011
Figure 3-6. Install Utility Source Connections
2. Back out terminal screws (C) from utility source
lugs (N1, N2).
3. Route red and black utility source cables through
upper rear hole in enclosure and into lugs until
bottomed. Alternately tighten terminal screws to
375 in-lbs (42.3 N-m).
NOTE: See Figure 3-5. Check label (D) on Utility
Service Disconnect Circuit Breaker to verify torque
specification.
NOTE: For best results, apply NO-OX-ID electrical
grease to prevent the formation of corrosion deposits on
copper, aluminum, and steel surfaces and conductors.
4. Place plastic divider over- utility source lugs and
install two screws. Alternately tighten screws until
snug.
Transfer Switch Owner's Manual 11
RTSB ounting and Installation
InstallillCustomer Load and Generator Source Connections
".
o�co
N
Figure 3-7. Automatic Transfer Switch (RTSB)
003013
A
utral Bar
E
Generator Source Connections
J
Transfer Switch (Down)
(Terminals E1, E2)
Emergency Standby Position
B
L
ility Source Connections
F
Customer Load Connections
K
Utility Closing Coil
(Nierminals
N1, N2)
(Terminals T1, T2)
d Utility Service Disconnect
rcuit Breaker
C
I'sulator
Board
G
WAGO Connector
L
Fuse Block (Terminals N1, N2, Ti)
(Terminals 0, 194, 23)
D
ire Clip
H
Generator Closing Coil
—
—
usto°" er Load
1. a Figure 3-7. Remove wire clip (D) to release
i ! ulator board (C) over customer load and utility
s'i, urce lugs (B, F).
,
2. a "C" in Figure 3-6. Back out terminal screws
f m customer load lugs (T1, T2).
3. Route cables through bottom or side holes in
enclosure and into lugs until bottomed. Alternately
tighten terminal screws as shown in Table 3-2.
IK
Automatic Transfer Switch Owner's Manual
RTSB Mounting and Installation
Table 3-2. Customer Load and
Generator Source Torque Specifications
,Switch Rating Torque
200A 275 in-Ibs. (2.1 Nm)
OTE: See Figure 3-5. Check label (E) attached to front
' inside cover to verify torque specification.
OTE: For best results, apply NO-OX-ID electrical
'ease to prevent the formation of corrosion deposits on
)pper, aluminum, and steel surfaces and conductors.
enerator Source
1. See "E" in Figure 3-7. Back out terminal screws
from generator source lugs (El, E2).
2. Route cables through bottom or side holes in
enclosure and into lugs until bottomed. Alternately
tighten terminal screws as shown in Table 3-2.
OTE: See Figure 3-5. Check label (E) attached to front
inside cover to verify torque specification.
OTE: For best results, apply NO-OX-ID electrical
'ease to prevent the formation of corrosion deposits on
)pper, aluminum, and steel surfaces and conductors.
3. Place insulator board over customer load and
generator source lugs and install wire clip to
secure.
stall Customer Control Connections
neral
length of the wires determines the recommended
gauge sizes for customer control wires as follows:
Table 3-3. Customer Control Wiring
Maximum Wire Length
Recommended Wire
Size
1-115 ft (1-35m)
No. 18 AWG
116-185 ft (36-56m)
No. 16 AWG
186-295 ft (57-89m)
No. 14 AWG
296-460 ft (90-140m)
No. 12 AWG
1. Locate six customer control wires exiting the
generator source conduit.
E: Wires may be contained in single or separate
uit depending upon NEC and local AHJ
2. Separate wires as follows:
Fuse Block
WAGO Connector
1. Utility sensing wire (N1)
1. Transfer wire 23
2. Utility sensing wire (N2)
2. +12 VDC wire 194
3. Battery charger wire (T1)
3. DC Common wire 0
Install Fuse Block Wires
1. Route three wires to fuse block.
2. See "L" in Figure 3-7. Install wires on appropriate
terminals using either Phillips screws or spade
contacts.
NOTE: Wires may be terminated with either ring
terminals or female spade contacts. If ring terminals are
used, tighten Phillips screw to 11 in-Ibs (1.24 Nm) after
installation of ring terminal.
Install WAGO Connector Wires
1. Strip 3/8 inch (1 cm) of insulation from three wires.
2. See "G" in Figure 3-7. Route wires to WAGO
connector.
3. Firmly press and hold terminal lock, insert wire into
appropriate terminal until it bottoms, and then
release lock.
4. Gently tug on each wire to verify that it is secure.
Transfer Switch Owner's Manual 13
RTSB Mounting and Installation
Exer0se Transfer Switch
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
in death or serious injury, and equipment damage.
(000132)
Verify orrect manual operation of the transfer switch
BEFO �iIE operating electrically. Proceed as follows:
1. ee Figure 3-8. A handle (A) is provided for
Manual operation of the transfer switch. The
1- andle is fitted to a bracket (B) mounted to the front
of the inside cover.
C
003014
Figure 3-8. Handle Location
2. C bserve the position of the handle carrier arm on
tTe transfer switch mechanism. The arm is colored
yellow (like the handle) for easy identification and
NOTE:„lf the inside cover is installed, use the narrow slot
(C) ne it to the handle bracket to perform steps 3 and 5.
3. F amove yellow handle from bracket.
4. a Figure 3-9. Insert handle into hole in handle
c' rrier arm and proceed as follows:
IV ve the handle UP:
• CUSTOMER LOAD (T1 and T2) is connected
to UTILITY SOURCE (N1 and N2).
IV ove the handle DOWN:
• CUSTOMER LOAD (T1 and T2) is connected
to GENERATOR SOURCE (E1 and E2).
i
k
I
�s
xl;
� zi.
'.
1 �
l
003015
Figure 3-9. Exercise Transfer Switch
ACAUTION
Equipment damage. Do not use excessive force
while manually operating the transfer switch.
Doing so could result in equipment damage.
(000122)
5. After use, remove handle from carrier arm. Insert
handle in bracket.
Install Covers
1. See Figure 3-1. Place inside cover into enclosure.
For best results, first engage top of cover in
notches of enclosure before engaging slotted tab
at bottom with threaded stud.
2. Install hex nut on threaded stud and tighten until
snug.
3. Place outside cover into enclosure. Tighten
thumbscrew until snug.
4. Install customer supplied padlock into hasp at
bottom of enclosure.
14
Automatic Transfer Switch Owner's Manual
Load Management
5: Load Management
meral
en fully functional, the Overload Prevention Control
and (OPCB) manages six loads —two A/C units, and
r general use contactors. The general use contactors
used to power any typical load, such as an additional
unit, well pump, or room lighting circuit. See Figure.
loads greater than 10 kW (9 kW if running on Natural
s) or 2HP (motors) must be connected to the OPCB.
Prevention Control Board (OPCB)
OPCB prevents overloading of the generator.
D03006
Air Conditioner
Connections (2)
Control up to two A/Cs using 24V
low voltage thermostat wires
B.
Status LEDs (4)
Illuminate to indicate loads
currently allowed to run
Load Connections
Control up to four loads using four
(4)
PMMs and one transformer
(purchased separately).
Figure 5-1. Overload Prevention Control Board
(OPCB)
a drop in frequency occurs when powering customer
ads, the OPCB "sheds" all connected loads. Loads to
"shed" are grouped in four priority levels on the
rE: Loads are shed when frequency is less than 58
for three seconds, or less than 50 Hz for a half
md.
Priorities 1 and 2 (A/C 1, A/C 2) each provide
connections for both one air conditioner and one
general use contactor. Both the air conditioner and
associated contactor can be used at the same time.
While no additional equipment is required to control
the air conditioners (internal relays interrupt the
thermostat 24VAC control signal to disable the air
conditioner loads), a PMM is required to enable each
contactor (Load 1, Load 2).
Priorities 3-4 (Load 3, Load 4) provide connection for
one general use contactor each, which requires a
separate PMM to be operational. Any load, including
air conditioners, can be controlled via the PMMs. The
OPCB supplies 24VAC to energize the contactor coil
in each PMM. The PMMs and required transformer
must be purchased separately. For details, see
Power Management Module (PMM) Kits
• Four LEDs illuminate to indicate when the associated
priority load is enabled. The LEDs are extinguished
when the associated load is shed (disabled).
NOTE: Press the Test button at the bottom of the OPCB
to simulate an overload condition.
Transfer Switch Owner's Manual 21
Load Mpriagement
Coni
An air
or f-v
OPCB
comes,
iect A/C 1 and A/C 2 Wiring
conditioner can be controlled (using the 24VAC
>tat control Y wire) by wiring it directly to the A/C 1
2 terminals on the OPCB terminal strip. The
's hard wired to control the two A/C units and
Feady for use without additional parts.
R
Figure 5-2. Connect A/C 1 and A/C 2 Wiring
1. SSee Figure 5-2. Route the 24 VAC thermostat
clii
coli ntrol Y wire (from the furnace to the outdoor air
nditioner unit) to the OPCB terminal strip.
2. Ouuill llnnect the wire to the A/C 1 terminal on the
CB terminal strip. These are normally closed
c, �i ntacts which open upon load shed conditions.
�ep wire away from High Voltage wires.
3. If required, connect a second air conditioner to A/C
2 t erminal on the OPCB terminal strip.
Contact Ratings
l & A/C 2 1 24 VAC, 5.0 Amps Max
NOTE:
installai
Ma
23 Transfer
AJ.0 i ;sr, SGPPLY'y
24V 1
_ LOAD
1A MAX 2
LOAD2
2
1A MAX
LOADS
1A MAX
K
1
LOAD4
1A MAX 2
003022
Connect Transformer and PMM Wiring
Power Management Module (PMM) Kits
The four general use contactors need additional
hardware to become functional. The hardware, which
must be purchased separately, is contained in two kits as
follows:
ese instructions are for a typical air conditioner
. Control of heat pump and two -stage air •
-s require special connections or use of Power
mt Modules (PMMs).
Power Management Module (PMM) Starter Kit, Part
No. 0061990, includes one PMM with transformer.
The transformer, which is mounted to the subplate
inside the ATS enclosure, interfaces with the OPCB
to generate the 24 VAC signal needed for control of
the selected general use contactor (Load 1, 2, 3, or
4).
Power Management Module (PMM), Part No.
0061860. To achieve full system functionality, a total
of three PMMs are required to allow control of the
three remaining general use contactors on the
OPCB.
NOTE: See Figure 5-4. The Starter Kit must be
purchased to enable use of PMMs. PMMs will not
function without installation of the transformer (B)
included in the Starter Kit.
22
Automatic Transfer Switch Owner's Manual
Load Management
onnect Transformer Wiring
1. Obtain Power Management Module (PMM) Starter
Kit.
2. See Figure 5-3. Mount the transformer using the
existing holes (A) in the subplate.
3. Install transformer wire connections to the OPCB
terminal strip as indicated in the diagram. (NOTE:
Factory wiring is indicated with an "F.")
n
ID
Color
Description
B
Blue
LOAD SUPPLY 1 terminal
C
Black
T1 terminal
D
White
NEUTRAL terminal
E
Yellow
LOAD SUPPLY 2 terminal
o
Figure 5-3. Connect Transformer Wiring
U
a y
RTS 1
003022
I
Transfer Switch Owner's Manual 23
I�
Load anagement
Connect PMM Wiring
GDOElpUC
K
23 Transfer
LOAD 1
to MAX 2
LOAD
2
IA MAX '
1
LOAD
1A MAX 2
f
LOAD
IA MAX 2
E
I PMM I
Figure 5-4. Connect PMM Wiring
G
O
R
Load #1
PMM #1
Load #2
PMM #2
Load #3
PMM #3
Load #4
PMM #4
F
003024
A.tTSB Transfer Switch E. .Appliance Load Line (240 VAC) J. PMM Starter Kit
B. Utility Source (either with F. Water Heater or Other Large K. Power Management Module
�coming
sconnect or switch; must be SE rated) Appliance (PMM)
C. o T1rr2 G. Control Wires (24 VAC)
D. istribution Panel with Circuit Breakers H. Transformer
I
24 Automatic Transfer Switch Owner's Manual
Load Management
See Figure 5-4. Mount PMM (k) and connect the
load to the main contacts.
Connect PMM contactor coil to the selected
general use contactor on the OPCB terminal strip.
Obtain additional PMMs as required and connect
to remaining general use contactors on the OPCB
terminal strip.
TE: When configuring the system for full functionality,
anize the six loads into four priority groups. Priority 1
1) and the associated general use contactor (Load
is the highest and is usually the first load(s)
onnected (except in fast load shed mode). Priority 4
ad 4) is the lowest and is usually the last load
onnected (except in fast load shed mode).
CD
Transfer Switch Owner's Manual 25
Testing
ection 6: Testing
unctional Tests
intact a Independent Authorized Service Dealer (IASD)
inspect the installation and verify strict compliance with
applicable codes, regulations and standards. Only
rform the functional tests when convinced of the
egrity of the installation.
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury. (000100a)
ACAUTION
Equipment damage. Perform functional tests in the
exact order they are presented in the manual.
Failure to do so could result in equipment damage.
4 (000121)
fl
N TE: Before proceeding, read and understand all
information and instructions in this section. Become
familiar with any and all information found on labels,
d als or tags either affixed or attached to the transfer
svy tch. Also, take special note of any special options or
accessories that might be installed and thoroughly review
th �iir operation.
anual Operation
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
in death or serious injury, and equipment damage.
(000132)
P
correct manual operation of the transfer switch
,RE operating electrically. Proceed as follows:
See Figure 6-1. A handle (A) is provided for
manual operation of the transfer switch. The
handle is fitted to a bracket (B) mounted to the front
of the inside cover.
pWARNING
UTIUTY
o
=(A
,-O
OEICObiELTY18�'OItlICEO
K BUVPLY BE{OPE BEPYcwO
•VEAlROEYFNT fAwEPT0UrE0
LEBEWPf.EO
OW�FM.TEMNw. DE EI.aE
FNINFTEM El IEH PEPNU1id0
6
W=
0;
�y
MPnuPl Ooernl�on
num�.vo wniw�nw
GENERATOR
wp nn.f
'm.u..E�w n"-
003014
Figure 6-1. Handle Location (RTSB shown)
2. See Figure 6-2. Press OFF (G) on the generator
control pad. A red LED illuminates to confirm that
the system is in the OFF mode.
A B
N
R 0 1
® m
H .-Wj K
D
G F E
003026
Figure 6-2. Generator Controls and Switches
A.
LCD Screen
G.
Off
B.
7.5 Amp Fuse
H.
Manual
C.
Up Arrow
J.
Auto
D.
Enter
K.
Utility Service
Disconnect (RTSB)
E.
Down Arrow
F.
Escape
L.
Generator Disconnect
3. Move the transfer switch utility service disconnect
circuit breaker (K) down to the OFF (Open) position
(RTSB), or disconnect as required at Utility
Distribution Panel (RTSI).
Transfer Switch Owner's Manual 27
Testi
4. Move the Generator Disconnect circuit breaker
switch (L) to the OFF (Open) position.
5. iObserve the position of the handle carrier arm on
�he transfer switch mechanism. The arm is colored
itellow (like the handle) for easy identification and
observation.
NOTE If the inside cover is installed on RTSB models,
use t �e narrow slot next to the handle bracket to perform
the fo, owing steps.
6. Remove yellow handle from bracket fastened to
Le
nt of inside cover (RTSB) or subplate (RTSI).
7. ii Figure 6-3. Insert handle into hole in handle
arner arm and proceed as follows:
ove the handle UP:
• Customer load (T1 and T2) is connected to utility
source (N1 and N2).
ove the handle DOWN:
Customer load (T1 and T2) is connected to
generator source (E1 and E2).
�. ,1
.............
FBI
003015
s
{ it
js ar 1
Figure 6-3. Exercise Transfer Switch (RTSB shown)
ACAUTION
Eqipment damage. Do not use excessive force
wh �e manually operating the transfer switch.
Do'I ig so could result in equipment damage.
(000122)
1,1
8. fter use, remove handle from carrier arm. Insert
"andle in bracket.
Voltage Checks
1. Move the transfer switch utility service disconnect
circuit breaker switch up to the ON (Closed)
position (RTSB), or connect as required at Utility
Distribution Panel (RTSI).
2. Turn off all loads.
IMPORTANT NOTE: The transfer switch is now
electrically hot.
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
(000129)
3. See A, B, and C of Figure 6-4. Using an AC
voltmeter, verify that no load voltage measured
across the transfer switch terminals is as follows.
Check
Approximate Measurement
N1 to N2
240 VAC
N1 to NEUTRAL
120 VAC
N2 to NEUTRAL
120 VAC
4. If utility supply voltage is correct and compatible
with transfer switch ratings, turn OFF the utility
supply to the transfer switch.
5. Press MANUAL on the generator control pad to
start the generator.
6. Allow the generator to run at no load for at least
five minutes.
7. Move the generator disconnect circuit breaker
switch to the ON (Closed) position.
IMPORTANT NOTE: Generator output voltage is now
being delivered to transfer switch terminals.
I N
Electrocution. High voltage is present at
60 transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
(000129)
8. See D, E, and F of Figure 6-4. Using a frequency
meter and AC voltmeter, verify that frequency and
no load voltage measured across the transfer
switch terminals is as follows.
Check
Measurement
Frequency
60-62 Hertz
E1 to E2
240-246 VAC
E1 to NEUTRAL
120-123 VAC
E2 to NEUTRAL
120-123 VAC
28
Automatic Transfer Switch Owner's Manual
Testing
1
MOM
. _ .
,
000...
;
�I
E2II
ww
�B
1::
IC
::: �-
,_,�i:
r;;
......
,
'
000
MGM
coo
NI
N2 111—
I
��
�J
II
•00
■ill i �-
. _ . 1
3
I
.
I
�6000
1N1
N2
I
000>
-
1
003028
Figure 6-4. Voltage Checks
I
Move the generator disconnect circuit breaker NOTE: Do NOT proceed until generator frequency and
switch to the OFF (Open) position. AC output voltage are within stated limits. If the no load
. Press OFF on the generator control pad to shut voltage is correct, but no load frequency is incorrect, the
down the generator. A red LED illuminates to engine governed speed may require adjustment. If no
confirm that the system is in the OFF mode. load frequency is correct, but output voltage is not, the
voltage regulator may require calibration (see generator
i
Installation Manual).
Transfer Switch Owner's Manual
29
Ds Generator Under Load Check Automatic Operation
1. 11,"ove
ove the GENERATOR DISCONNECT Circuit Check the system for proper automatic operation as
reaker switch to the OFF (Open) position. follows:
2. the transfer switch UTILITY SERVICE 1. Verify that the generator is in the OFF mode. A red
ISCONNECT circuit breaker switch down to the LED illuminates to confirm that the system is in the
FF (Open) position (RTSB), or disconnect as OFF mode.
l�quired at Utility Distribution Panel (RTSI). 2. If removed, install cover(s) onto transfer switch
3. 111
emove yellow handle from bracket fastened to enclosure.
ont of inside cover (RTSB) or subplate (RTSI). 3. Turn ON the utility power supply to the transfer
4.isert handle into hole in handle carrier arm of switch using the means provided (such as a utility
transfer switch. main line circuit breaker).
5. Figure 6-3. Move the handle DOWN to
lee
onnect CUSTOMER LOAD (T1 and T2) to
GENERATOR SOURCE (E1 and E2).
6. "Iress MANUAL on the generator control pad to
hart the generator.
7. nce the generator is running, IMMEDIATELY
love the GENERATOR DISCONNECT Circuit
reaker switch to the ON (Closed) position. This
revents the speed from ramping down before the
i6ad is applied, a condition which could cause the
"gine to stall. The generator now powers all
�IOAD circuits.
8. check generator operation under load as follows:
! Turn ON electrical loads to the full rated
wattage/amperage capacity of the generator.
DO NOT OVERLOAD.
With maximum rated load applied, perform
frequency and voltage checks across ATS
terminals E1 and E2. Frequency must be
greater than 59 Hertz and voltage must be
11 greater than 220 VAC.
Verify that gas pressure remains within
specification (see Installation Guidelines
Manual, Part Number OK2503).
Allow the generator to run under rated load for
at least 30 minutes. While the unit is running,
check for unusual noises, excessive vibration,
overheating, or other signs that may indicate
I problems.
9. q, ce the inspection is complete, move the
Gi NERATOR DISCONNECT Circuit Breaker
sl itch to the OFF (Open) position.
10. A ow the generator to run at no load for several
nutes.
11. P ,less OFF on the generator control pad. A red
LED illuminates to confirm that the system is in the
OFF mode.
NOTE: Transfer Switch transfers back to the Utility
position.
4. Move the GENERATOR DISCONNECT Circuit
Breaker switch to the ON (Closed) position.
5. Press AUTO on the generator control pad. A green
LED illuminates to confirm that the system is in the
AUTO mode. The system is now ready for
automatic operation.
6. Turn OFF the utility power supply to the transfer
switch. With the generator ready for automatic
operation, the engine will crank and start when the
utility source power is turned OFF after a ten
second delay (factory default setting). After
starting, the transfer switch will connect load
circuits to the standby side after a five second
delay. Allow the system to operate through its
entire automatic sequence of operation.
7. With the generator running and loads powered by
generator AC output, turn ON the utility power
supply to the transfer switch. The following should
occur:
a. After approximately fifteen seconds, the
switch transfers loads back to the utility power
source.
b. About one minute later, the engine shuts
down.
NOTE: With the generator in the AUTO mode, the
system is now set for fully automatic operation.
30
Automatic Transfer Switch Owner's Manual
Testing
A Overload Prevention Control
and (OPCB)
Figure 6-5. A test button (A) at the bottom of the
.B is used to test the functional operation of the
3m. The test button works in both the Utility Source
Generator Source positions.
LOAD,
LOADS
003029
Figure 6-5. OPCB Test Button and LEDs
as follows:
Turn ON the Utility supply to the ATS.
Press the TEST button.
Verify that all connected loads are shed (disabled)
and that all status LEDs (B) on the OPCB are
extinguished. The method of verification will
depend on the type of load.
After five minutes have elapsed, verify that A/C 1
and Load 1 are energized and that the associated
status LED on the OPCB is illuminated.
Fifteen seconds after A/C 1 and Load 1 are
energized, verify that A/C 2 and Load 2 are
energized and that the associated status LED is
illuminated.
Fifteen seconds after A/C 2 and Load 2 are
energized, verify that Load 3 is energized and the
associated status LED is illuminated.
Fifteen seconds after Load 3 is energized, verify
that Load 4 is energized and the associated status
LED is illuminated.
i tallation Summary
IIJ Ensure that the installation has been properly
G performed and that it meets all applicable codes
and regulations.
Test and confirm proper system operation - as
described in the appropriate owner's and
installation manuals.
Educate end users on the proper operation,
maintenance and service procedures.
Removal From Service During Utility
Outages
If, during prolonged utility outages, the user wishes to
remove the unit from service to conserve fuel, reduce run
hours, or to perform maintenance tasks, then complete
the steps listed below.
IMPORTANT NOTE: Failure to abide by this
procedure can result in equipment damage.
To remove the generator from service while running in
AUTO and online, proceed as follows:
1. Turn the main utility disconnect to OFF (Open).
2. Move the GENERATOR DISCONNECT Circuit
Breaker switch to the OFF (Open) position.
3. Press OFF on the generator control pad. A red
LED illuminates to confirm that the system is in the
OFF mode.
If inspection and/or maintenance tasks are to be
performed, complete the additional steps listed below.
IMPORTANT NOTE: If the generator has been
running, allow one hour to elapse for unit to cool
down and fans to stop. Failure to do so can result in
damage to the AVR electronics.
4. See Figure 6-6. Remove T1 fuse from transfer
switch.
Figure 6-6. Remove T1 Fuse (RTSB Shown)
5. Pull up rubber flap next to generator control pad
and remove 7.5 amp fuse.
6. Remove battery negative cable (black) from battery
negative (=) terminal.
7. Place a DO NOT OPERATE tag or placard on both
the control pad and transfer switch.
To return the generator to service, proceed as follows:
NOTE: If inspection and/or maintenance tasks were
performed, start with step 1. If the unit was just shut down
to conserve fuel or to reduce run hours, start at step 5.
1. Install battery negative cable (black) onto battery
negative (-) terminal.
2. Pull up rubber flap next to generator control pad
and install 7.5 amp fuse.
Transfer Switch Owner's Manual 31
T
3. ee Figure 6-6. Install T1 fuse in transfer switch.
4. emove the DO NOT OPERATE tag or placard
rom both the control pad and transfer switch.
5. ress AUTO on the generator control pad. A green
ED illuminates to confirm that the system is in the
I� UTO mode.
6. Ili nce the generator is running, IMMEDIATELY
l ove the GENERATOR DISCONNECT Circuit
reaker switch to the ON (Closed) position. This
revents the speed from ramping down before the
load is applied, a condition which could cause the
Ingine to stall.
7. urn the main utility disconnect to ON (Closed).
32 Automatic Transfer Switch Owner's Manual
Wiring and Installation Diagrams
ection 7: Wiring and Installation Diagrams
I� g g
TSB Transfer Switch
TSB 200A Transfer Switch Wiring Diagram (Page 1 of 2)
NOTEi
ALL CONTACTS SHOWN WITH
TRANSFER SWITCH IN UTILITY
POSITION.
TR
126 1 5 N1 A
UCB
N 1 A
N2A --��
A F1 B N1 UTI LI TY
1
B A E1 A N2A
1 2 1 2
-- — - - --- o - o -
Nor ----- ANC NCr ----- IN❑ °
l i i i ATS °
xA VB
'
com COM 1
r--------------1--------------- '
i i I (U (U
' VR1� VR21 i wz
Cl C
A 2 1--- 1- 2— TR - O - O
B
T1 A
;
205 - 4 E2A
N2A N2A
23
194
F F 0
r - — - — - — - — -
LOAD SUPPLY 1 F 3
Nmo T1 T1
i
NEUTRAL
0 GROUND
LOAD SUPPLY 2
194 +12V
1
23 TRANSFER LOAD 1
2
A/C 1 1
LOAD 2
2
A/C 2 1
LOAD 3
2
1
LOAD 4
LOAD CONTROLLER 2
7
TR
Y
194
2
TB-3
TB-2
UTI LI TY
2
23
J
194
-0 GND
TB-1
—T1
00
NB
L7
z
0
U
LL1
z
0
Q�
L1J
a
0
U
LEGEND
ATS
TRANSFER SWITCH CONTACTOR
C1
SOLENOID COIL (UTILITY CLOSING)
C2
S❑LENOID COIL (STANDBY CLOSING)
F1 F2 F3
FUSE 5A
NB
NEUTRAL BLOCK
TB
TERMINAL STRIP (CUSTOMER C❑NNECTION)
TR
RELAY TRANSFER '
UCB
UTILITY CIRCUIT BREAKER
VR1 VR2
VARISTOR
XA XB
LIMIT SWITCHES ACTUATOR
Transfer Switch Owner's Manual 33
Wirin6and Installation Diagrams
I
RTSB 200A Transfer Switch Wiring Diagram (Page 2 of 2)
� .CUo(U
0
-0
194
23
Tf UMMAT 1
A/C 1
Tf ONWAT 2
A/C 2
ffi, �,
SrKil 1
U
+]M 7RANSFER wirRAL[+.
[+]
[+7
[+7
[+7
LOAD 1
[+7
[+7
LOAD 2
• LOAD 4
U19 4[+7+7
J �,
T]
126
N2A
N1A
N2A
TR " "
QQ<Q
- 4 .-4 ()j (U
Z Z Z Z
H
A
-4- Q U7
0i
M
W (U
LL
IL
I -
I
B
N1 N2
UTILITY
SENSE
T1
LOAD
240 VAC
CUSTOMER CONNECTION
205
CUSTOMER
CONTROL
CONNECTIONS
NOTER
BONDING JUMPER
IS REMOVEABLE
GND
UTILITY CONNECTION
:e1�►1�I:T��1�1:�
CONNECTION
CUSTOMER
LOAD
CONNECTION
MIT" �Bl
34
Automatic Transfer Switch Owner's Manual
Wiring and Installation Diagrams
B 200A SE Transfer Switch Interconnection Drawing
W
G
Z
tit U
AIC
0
Z
0
W
ae Z z
o W
3
w_
a
0
Transfer Switch Owner's Manual 35
Wirin I and Installation Diagrams
RTSB 200A SE Transfer Switch Installation
Drawing
:OUT SUITABLE
& 2' CONDUIT
2-PLi
4.02mm I0.2'I
517
1
1
1
7mm 110.5'3--1 I I-37,5MM 11.48'1 TYPICAL
�lJ
KNOCKOUT SUITABLE
1-1/2' & 2' CONDUIT
130.1'1 I 1 679.45mm [26.75.1
SUPPLIED)
KNOCKOUT SUITABLE FOR'
1-1/2' & 2' CONDUIT SIZE
;OUT SUITABLE FOR
& 1' CONDUIT SIZE
42.4rgm r1.7'1 TYPICAL
36 Automatic Transfer Switch Owner's Manual
Specifications
ection 8: Specifications
B Transfer Switch
Model
RTSB200A3
Amps
200A
Voltage
120/240V 1 Phase
Load Transition Type (Automatic)
Open Transition Service Rated
Enclosure
NEMA/UL 3R
Withstand Rating (Amps)
22,000
! TSI Transfer Switch
Model
RTS1200A3
Amps
200A
Voltage
120/240V 1 Phase
Load Transition Type (Automatic)
Open Transition Service Rated
Enclosure
NEMA/UL 3R
Withstand Rating (Amps)
10,000