Emerson 7000 User Manual 3
Operator’s
y
pp
7000 Series Medium-Voltage
Automatic Transfer Switches
4.76, 15.0, 27 kV; 1200, 2000, 3000 ampere
DANGER
!
DANGER is used in this manual to warn of a
hazard situation which, if not avoided, will result in
death or serious injury.
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided, could
result death or serious injury.
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in minor or moderate injury.
WARNING
!
CAUTION
!
Refer to the outline and wiring drawings provided
with your 7000 Series ATS for all installation and
connection details and accessories.
Refer to the Group 5 Controller User’s Guide
381333-126 for ATS status display messages, time
dela
s, pickup & dropout settings, & adjustments.
ASCO 7000 Series Medium-Voltage Automatic Transfer
Switches (ATS) are designed to ANSI C37.20.2 standard
for metal-clad switchgear and are UL 1008A Listed.
Nameplate and Rating Label
The nameplate includes data for each specific automatic
transfer switch. Use the ATS only within the limits
shown on this nameplate. Each ATS has a rating label to
define the loads, interrupting, short-time, and close &
latch ratings. Refer to the label for specific values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury or
serious equipment damage.
This equipment is designed for use with dangerous
levels of power from multiple sources. Additionally,
voltage transformers and standby control power
sources (i.e. station battery system, UPS) included in
the equipment must be disconnected when servicing
this equipment. Persons installing, servicing, and
operating this equipment must be trained, licensed
appropriately, and familiar with medium voltage
electrical power equipment and adhere to required
a
arel, protection, tools, controls, and procedures.
WARNING
!
Table of Contents
Catalog No., major components view...............i
INSTALLATION
Mounting, Connections ................................1-1
OPERATION
Energizing ATS after Installation..................2-1
Controller, Lock-out relay (optional)............. 2-2
Transfer Test ATS, ACTS, ADTS ..2-3, 2-4, 2-5
Typical 7000 Series MV ATS, 1200 A
50 Hanover Rd., Florham Park, NJ 07928 USA
For sales or service call 800-800-2726 (ASCO) www.ascopower.com
TROUBLESHOOTING
ATS, ACTS, ADTS.........................3-1, 3-2, 3-3
INDEX...............................................back page
381333-395
i Catalog Number 381333-395
g
(
)
(
Catalog Number Identification
A typical Catalog Number is shown below with its elements explained. The example is for a 7000
Series Automatic Transfer Switch, class A interrupting rating, automatic, open-transition transfer, dualcircuit breaker, 3 pole, 1200 ampere, 6.6 kV 60 Hz, in a Type 1 enclosure.
Fixed elements
Catalo
Number
Variable
elements
Interrupting
Rating
A = 25 kAIC
B = 40 kAIC
C = 50 kAIC
D = 16 kAIC
NOTE
Interrupting rating A (25 kAIC)
is not available for voltage
ratings below 5 kV.
Product Series
7 = 7000
Operation
Type
A = Automatic
N = Non-auto
Emergency Source
Circuit Breaker
Emergency source
Breaker Control
switch
Device Type
M = dual CB transfer
Poles
3 = 3 pole
Controller
5 = Group 5
A 7 A T M 0 3 1200 6 5 X C
Transition
Type
blank = Open
C = Closed
D = Delayed
S = Soft load
Construction
T = Transfer
(non-soft load)
L = Soft load
transfer
U = Service
entrance (Normal)
G = Service
entrance (Emerg)
P = Service
entrance (N & E)
Transfer Switch
CB SECTION
Neutral
Type
0 = None
A = Solid
Amperes
1200
2000
3000
CONTROL SECTION)
Voltage
T = 2.4 kV
U = 4.16 kV
V = 11 kV
W = 12.47 kV
X = 13.2 kV
Z = 14.4 kV
3 = 3.3 kV
6 = 6.6 kV
7 = 7.2 kV
8 = 10 kV
9 = 13.8 kV
O = Other
Controls
Accessories
X = yes
Z = special
Enclosure
Type
C = 1
M = 3R
(secure)
Voltage
transformer
Transfer control
& lights
Controller
Normal Source
Breaker Control
switch
Transfer Switch
control
Customer
Normal Source
terminal block
Circuit Breaker
Voltage
transformer
Typical 7000 Series MV ATS with location of major components (1200 amp shown)
381333-395 Installation 1-1
Installation
The ASCO 7000 Series Medium-Voltage Automatic
Transfer Switch (ATS) is factory wired and tested.
Refer to the manual from the manufacturer of
the metal-clad switchgear for section handling,
installation, power connections, and testing.
Supporting Structure
The supporting foundation for the enclosure must be
level and straight. Refer to the applicable enclosure
outline drawing included with the transfer switch for
all mounting details including door opening space.
Mounting
Refer to the outline and mounting diagram and mount
the automatic transfer switch according to details and
instructions shown on the diagram.
Protect the transfer switch from construction grit and
metal chips to prevent malfunction or shortened life
of the transfer switch.
NOTICE
Testing Power Conductors
Engine-Generator Control
Connections
All customer connections, including the engine control
contact connections, are located on terminal block TB.
This terminal block is located on the interior left side
of the control section. Refer to the wiring diagram
provided with the automatic transfer switch. Connect
the engine start wires to the appropriate terminals. See
Figure 1-1 and Table A.
Table A. Engine-generator control contacts
When normal source fails TB terminals
contact closes TB1 and TB2
contact opens TB1 and TB3
enginegenerator
control
contacts
1
2
3
Do not connect the power conductors to the transfer
switch until they are tested. Installing power cables in
conduit, cable troughs, and ceiling-suspended hangers
often requires considerable force. The pulling of
cables can damage insulation and stretch or break the
conductor’s strands. For this reason, after the cables
are pulled into position, and before they are connected,
they should be tested to verify that they are not
defective or have been damaged during installation.
Line Connections
Refer to the wiring diagram provided with the transfer
switch. All wiring must be made in accordance with
the National Electrical Code and local codes.
DANGER
!
De-energize all conductors, open all circuit
breakers, and rack out all voltage transformers
before making any connections. De-energize any
UPS, station battery system, or any similar
system providing standby control power. Be sure
that the Normal and Emergency line connections
are in proper phase rotation. Place the engine
generator starting control in the OFF position.
Make sure engine generator is not in operation.
Figure 1-1. Customer terminal block TB in controls section.
Auxiliary Circuits
Connect auxiliary circuit wires to appropriate
terminals on terminal block TB as shown on the wiring
diagram provided with the automatic transfer switch.
2-1 Operation 381333-395
(
)
Configuration of Shipped ATS
CB SECTION) (CONTROL SECTION
The MV ATS is shipped with the circuit breakers and controls in
the following state:
ON CB SECTION(S) - Circuit Breakers, check these items
Emergency source
circuit breaker
control switch
▪ Normal source circuit breaker (CBN)
in the OPEN position with the closing spring discharged.
▪ Emergency source circuit breaker (CBE)
in the OPEN position with the closing spring discharged.
▪ Normal source circuit breaker control switch (53CBN)
in the TRIP position (green target displayed on control switch)
▪ Emergency source circuit breaker control switch (53CBE)
in the TRIP position (green target displayed on control switch)
Transfer Switch
control switch
ON CONTROL SECTION – Controls, check this item
▪ Transfer Switch Auto-Man selector switch (53AM)
in the MAN (manual) position.
Circuit breaker
position lights
green=CB open
red=CB closed
Breaker control
target indicator
green=tripped
red=closed
Figure 2-2. Control switches
Be sure to close both enclosure doors
before proceeding to prevent personal
injury in case of electrical system fault.
Normal source
circuit breaker
control switch
Figure 2-1. Location of control switches
WARNING
!
Energizing the Normal Source, Setting Automatic Operation Mode
After the MV ATS is installed, the Normal source can be energized. Then the controls can be set for automatic
(standby) operation. The Normal and Emergency sources must be available. Follow this procedure:
ON CONTROL SECTION – Controls, check these items
▪ The transfer control indicator lights Normal Source Accepted and TS Locked Out should be on.
▪ The controller display should show that the transfer switch is Locked Out.
ON CB SECTION(S) - Circuit Breakers, check these items
▪ Normal source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light).
▪ Emergency source circuit breaker control switch should indicate that the circuit breaker is OPEN (green light).
Energizing procedure
1. On Control Section, turn the Transfer Switch Auto-Man selector switch to the AUTO (automatic) position.
2. On CB Section, turn the Normal source circuit breaker control switch to CLOSE position (red target window).
3. On CB Section, turn the Emergency source circuit breaker control switch to the CLOSE position (red target).
4. On Control Section, press the transfer controls Alarm Reset button. Normal source circuit breaker should close.
The Normal source CB control switch should indicate that the circuit breaker is CLOSED (red light).
The ATS is now in an automatic (standby) operating mode. Proceed to transfer test.