Leviton 52120-7MS User manual

Multi-Phase Surge Protective Devices with Integral
Disconnect Switch
Cat. Nos. 52120-7MS, 52277-7MS, 52120-7CS, 52277-7CS
For main distribution and branch circuit panels
WARNINGS AND CAUTIONS:
• TO AVOID FIRE, SHOCK, OR DEATH: TURN OFF POWER AT CIRCUIT BREAKER OR FUSE AND TEST THAT
THE POWER IS OFF BEFORE WIRING!
• IT IS RECOMMENDED THAT THE 52000 SPD PANEL PROTECTION SYSTEM BE INSTALLED BY
AN ELECTRICIAN.
WARNINGS AND CAUTIONS:
• TO BE INSTALLED AND/OR USED IN ACCORDANCE WITH APPROPRIATE ELECTRICAL CODES AND
REGULATIONS (INCLUDING NEC/CEC, AS APPLICABLE).
• USE THIS DEVICE WITH COPPER OR COPPER CLAD WIRE ONLY.
• OPERATE INDOORS BETWEEN 30-90% RELATIVE HUMIDITY.
INSTALLATION ENGLISH
PK-93014-10-00-0A
DESCRIPTION
FEATURES
TO INSTALL
The 52000 SPD Panel Protection System with Integral Disconnect Switch is a
high-performance Surge Protective Device designed for use on main distribution
and branch circuit panels.
• cULus Listed.
• Integral disconnect switch with lockout feature.
• Replaceable plug-in modules, which facilitate maintenance.
• Hybrid component suppression design.
• 7 Mode Protection.
• Diagnostic monitoring of each phase module.
• Audible and visual failure indicators.
• Provisions for operation with an optional Remote Supervisor Panel, allowing monitoring of
SPD status from distant locations.
• 50-60 Hz operation.
• ANSI/IEEE Location Category A, B & C.
• Optional surge counter with front panel LCD display.
NOTE: The lockout feature of the disconnect switch will accommodate a
lock-shaft diameter of 0.20 in. - 0.31 in. , 5-8 mm (FIGURE 2).
1. Identify the device or load to be protected: The 52000 Panel should be located as close
as possible to the electrical panel serving the load to be protected in order to minimize
connection lead length resistance and inductance.
2. Identify the electrical system in use: This SPD panel is compatible with 3 Phase, 4 Wire
with Ground WYE configurations. The 52120-7MS and 52120-7CS series are compatible
with 120/208V AC WYE and the 52277-7MS and 52277-7CS are compatible with
277/480V AC WYE congurations (FIGURE 1).Matching SPD module and line voltages is
critical! Identify the system in use by measuring L-N and L-L voltages.
CAUTION: VOLTAGE MEASUREMENTS CAN BE DANGEROUS TO LIFE
AND/OR PROPERTY!
CONFIRM THAT THE MAXIMUM MEASURED VOLTAGES DO NOT EXCEED THE AC
RMS VOLTAGE RATING SPECIFIED ON THE 52000 REPLACEABLE MODULES, OR
DAMAGE MAY OCCUR TO THE MODULES.
3. Cutting Access Holes: Cut holes for conduit in panel using approved metal cutting tools.
Prevent any metallic filings from remaining inside the panel. If any metallic filings enter
panel, care must be exercised to remove them using a vacuum device or other
tools, as required.
Mount securely: Refer to the “Panel Mounting” Instruction Sheet enclosed.
Conduit Installation: Conduit should be installed with lock nut and bushing. Lock nut
should be adjusted so that bushing secures properly, and conduit and bushing extend as
little as possible into the enclosure.
4. Connections: NOTE: Maximum wire size is #3 AWG. The SPD Panel is connected
through dedicated circuit breakers at 30 amps. For maximum surge protection the SPD
Panel should be mounted as close as possible (no more than 18 inches) from the circuit
breaker panel. Use wire size #10 to #3 AWG stranded. In a variation of this connection,
the panel circuit breakers can also feed a load by connecting the SPD panel to the circuit
within an approved connection enclosure. In this case, the circuit breakers must be rated
for this load. This facilitates SPD disconnection for installation or maintenance without
interrupting power to the load. It should be noted that during installation or maintenance
of the 52000 SPD Panel, the circuit breakers which feed the 52000 must be opened,
therefore power to the load will be momentarily disconnected.
Phase A, B & C leads ONLY - With the line POWER OFF, connect Phase A, B and C leads
to the upper terminals on the disconnect switch (18 in.-lbs).
Neutral and Ground ONLY - Remove Terminal Block Cover and connect leads using the
largest stranded wire size possible (#10 to #3 AWG) as illustrated in FIGURE 1. Power
leads may be connected to L1, L2, and L3 without regard to phase A, B, or C.
Replace terminal block cover.
Screw terminal torque requirements: #10 AWG (35 in.-lbs.), #8 AWG (40 in.-lbs.),
#3-#6 AWG (45 in.-lbs.).
5. Conduit attachment: A 2-inch hole in the enclosure is recommended to be used for
In-Out conduit connection.
CAUTION: THE ENCLOSURE MUST BE PROPERLY GROUNDED BY USE OF #10 AWG
MINIMUM SIZE COPPER WIRE ROUTED TO THE “G” TERMINAL LUG.
6. Attaching the connection leads - SPD to power lines:
WARNING: TO AVOID FIRE, SHOCK OR DEATH: TURN OFF POWER AT CIRCUIT
BREAKER OR FUSE AND TEST THAT THE POWER IS OFF BEFORE WORKING
ON THE SPD PANEL, SUCH AS WHEN CHANGING FUSES AND INSERTING OR
REMOVING REPLACEABLE MODULES.
NOTE: Power to the modules is disconnected when the disconnect switch is set to
the OFF position.
The ground terminal within the SPD Panel is connected to the metal enclosure. For
isolated ground systems, the isolated ground wire should not be connected to the In-Out
ground terminals. However, as indicated in step 5, the enclosure must be grounded via a
ground conductor to the ground terminal. With the power OFF, connect phase leads to L1,
L2, and L3 as indicated in step 4. Connect the neutral, for WYE systems, to the neutral
terminal. Connect ground to ground terminal.
Avoid sharp bends: Lead wire insulation should not be cut or damaged except to expose
ends for connection.
7. Remote connection:
• Relay status circuit and contacts rated at 7 Amps. The voltage rating is 240VAC or
30VDC. Contacts accommodate 20-12 AWG wire secured to terminals using 3.5 in.-lbs.
of torque. Wiring must be rated 600 VAC, dressed and secured away from live parts
and protected from sharp edges and door entrapment. Hole must be cut in enclosure for
conduit connection. If surge protection fails, continuity will be between the “NO” and “C”
contacts.
NOTE: If surge suppression failure has occurred, a transient surge has exceeded the
rating of the module and it should be replaced immediately.
• A 7/8 inch hole cut on the hinged side of the enclosure is recommended for the Remote
Supervisor Panel connections. See Remote Supervisor Panel Instructions for its
connection method.
8. Battery Installation: A 9-Volt alkaline battery is included in the shipping carton. The
purpose of the 9-Volt battery is to power the diagnostic warning circuitry in the event of
a power failure or multiple fuse failures. Remove the battery holder from the diagnostic
assembly. Insert the 9-Volt battery (be sure to follow the polarity markings on the battery
compartment), and slide the battery holder back in.
9. Secure modules and replace terminal block cover: Be certain all SPD Modules are
tightly in place and remove any extra materials. Close and secure enclosure cover door
before applying power.
10. Activate the system by turning AC power and Disconnect Switch ON: The Green
Module Status lights should be illuminated and visible through the ports in the enclosure
door, and all other lights should be OFF. If problems are encountered that can not be
resolved using the Problem Isolation Procedure printed on the inside of the enclosure
door, contact Leviton Technical Support: 1-800-824-3005.
11. Diagnostic Test: Press and hold down the test button. The Red warning indicator should
blink, the audible tone signal should beep, the Yellow low battery light should illuminate,
and the Remote Supervisor Panel warning indicator, if wired in, will be activated. Release
the test button.
12. Surge Counter Test: If the 52000 Panel has a LCD surge counter on it’s front panel,
press it’s “Reset” switch, then the “Test” switch. The display should register surge counts
each time the “Test” switch is depressed. The “Reset” switch should be depressed
whenever the LCD display is at a maximum (the LCD unit’s red LED will be illuminated).
“Reset” may be depressed anytime to clear the display.
NOTE: If there is a surge event with an amplitude of 800Vpk (1.2/50 & 8/20 combination
wave) or higher, then the unit will record the number of surges and show the total number
on the counter display.
SERVICING INSTRUCTIONS
Leviton Series 52000 SPD Servicing Instruction Procedure: Carefully read these
instructions as well as the Module and Fuse Replacement Instruction Procedure before
attempting service.
CAUTION: BEFORE OPENING SPD ENCLOSURE COVER, POWER MUST BE TURNED
OFF. FIRE, SHOCK OR DEATH CAN RESULT FROM INCORRECT SERVICING. IT IS
RECOMMENDED THAT THE 52000 SPD PANEL PROTECTION SYSTEM BE SERVICED
BY AN ELECTRICIAN. FUSES AND MODULES CAN BE SERVICED AND REPLACED BY
TURNING DISCONNECT SWITCH OFF.
Diagnostic Indicator Functions: Table 1 lists the diagnostic functions of the 52000 series
panels.
Module Diagnostics: Each module contains a Green LED for each mode. When illuminated,
they indicate that the module is properly seated, power for that phase is present, and the
protection fuse for that mode is intact. Modules should be replaced as soon as possible, after
a failure is noted (unlit Green LED). Absence of illuminated LEDs indicates either a loss of
power or a blown fuse due to excessive transients, such as due to a direct lightning strike.
When this occurs, see the Module LED/Fuse Correspondence Chart (located on the inside
panel door) for the list of the Green LED indicators and their designated fuses.
Fault Indication: A flashing Red warning LED, in addition to an audible beep tone, indicates
loss of power to the modules. This can be due to the absence of main phase power, or a

blown fuse caused by module failure due to transient over-stress (a condition which causes
the Fault Indication). It also transmits the occurrence to a remote indicator (an accessory item)
via an optically isolated Class II wire pair.
Beep Disable Switch: When a fault has been indicated and noted by authorized personnel,
the audible beep tone may be disabled by momentarily pressing the beep disable switch. The
Red warning LED will continue to flash. When the malfunctioning fuse and module have been
replaced, the beep disable switch should be pressed again in order to re-enable the audible
beep tone.
Battery Function: In the unlikely event that more than one fuse has blown, a 9-volt alkaline
battery is utilized to power the diagnostic circuitry so as to alert the user that there is a
problem. When this occurs, the flashing Red warning LED, audible beep tone, and remote
transmitter are activated. When multiple Green module LEDs are OFF, it is probable that the
unit’s diagnostic circuitry is being powered from the battery. In order to conserve battery life,
it is recommended that the user press the beep disable switch to turn OFF the audible beep.
After the fuses and modules are replaced, the Red flashing LED will turn OFF. Press the beep
disable switch in order to reactivate the audible warning tone.
Battery Disable: The unit is shipped with the battery disable switch in the disable position
so the battery will not continually discharge in the absence of AC power. When AC power is
first applied, the Red battery-disable LED and Yellow low-battery LED will be lit. The battery
disable switch should be pressed momentarily to enable the battery. This will be indicated by
both the battery disable and low battery LEDs turning OFF.
Low Battery Indication: An illuminated Yellow LED indicates an abnormally low battery
condition. This may be due to low battery voltage or a missing battery. When this happens
the Red warning LED will flash, the audible beep will sound, and the remote indicator will be
enabled. When the user is alerted to the warning status, the illuminated condition of the Yellow
LED and the lighted condition of all the Green module LEDs denotes a battery fault and not
a SPD module power or fuse fault. The Disable Battery switch should then be pressed to
silence the audible alarm beep, flashing LED, and remote warning for the battery malfunction.
The Yellow LED may remain illuminated as a reminder that the battery needs replacing. This
action re-enables the warning function to continue to monitor SPD faults. When the battery is
replaced, the Disable Battery switch should be momentarily pressed. A fresh battery, when the
disable battery switch is pressed, will cause the Yellow LED to turn OFF and will re-enable the
Low Battery warning function after pressing the battery disable switch.
Battery Replacement: Press battery holder and slide battery out. Be sure to follow the battery
polarity marking on the battery compartment.
Test Switch: A “Press to Test Switch” enables the user to test for proper operation of all the
functions described above. When the test switch is held down, the following functions will
occur:
• The Yellow low battery LED will illuminate.
• The Red warning LED will ash.
• The audible tone beeper will sound.
• The Remote Supervisor Panel warning indicator (an accessory item), if wired in, will be
activated, thus also testing the Remote Supervisor Panel.
LIMITED LIFETIME WARRANTY AND EXCLUSIONS
Leviton warrants to the original consumer purchaser and not for the benet of anyone else that this product at the time of its sale by Leviton is free of defects in materials and workmanship under normal and proper use during the lifetime of the product. Leviton’s only obligation
is to correct such defects by repair or replacement, at its option, if the product is returned prepaid, with proof of purchase date, and a description of the problem to Leviton Manufacturing Co., Inc., Att: Quality Assurance Department, 201 North Service Road, Melville, N.Y.
11747. This warranty excludes and there is disclaimed liability for labor for removal of this product or reinstallation. This warranty is void if this product is installed improperly or in an improper environment, overloaded, misused, opened, abused, or altered in any manner, or is not
used under normal operating conditions or not in accordance with any labels or instructions. There are no other or implied warranties of any kind, including merchantability and tness for a particular purpose. Leviton is not liable for incidental, indirect, special, or consequential
damages, including without limitation, damage to, or loss of use of, any equipment, lost sales or profits or delay or failure to perform this warranty obligation. The remedies provided herein are the exclusive remedies under this warranty, whether based on contract, tort or otherwise.
For Technical Assistance Call: 1-800-824-3005 (U.S.A. Only) - 1 800 405-5320 (Canada Only) - www.leviton.com PK-93014-10-00-0A© 2013 Leviton Mfg. Co., Inc.
GL1
L3
NL2
CB
CB
CB Black
Black
Black
Green
White
GN
Integrated
Disconnect
FIGURE 1 - 120/208V WYE or
277/480V WYE, Three Phase
4 Wire with Ground
Table 1 - Diagnostic Indicator Functions:
List of the diagnostic functions of the 52000 series panels
Beeper
("Audio Alarm")
Battery Disable
("Low Battery")
Self Test
("Test")
Fault
LED
(Red)
Beeper Remote Module
LEDs
(Green)
Battery
Status
LED
(Yellow)
Disable
Button
Disable
LED
Disable
Button
Disable
LED
Momentary
Action
Button
Mode
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OUT
IN
OFF
ON
OUT
OUT
OFF
OFF
OUT
OUT
Normal
ON
ON
ON
OFF
ON
ON
one or more
OFF
OFF
OFF
OUT
IN
OFF
ON
OUT
OUT
OFF
OFF
OUT
OUT
Module
Fault
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
OUT
OUT
OFF
OFF
OUT
IN
OFF
ON
OUT
OUT
Low
Battery
ON
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OUT
IN
OUT
OFF
OFF
OFF
OUT
OUT
IN
OFF
OFF
OFF
OUT
OUT
OUT
No AC
Power
ON ON ON ON ON OUT OFF OUT OFF IN
Self
Test
FOR CANADA ONLY:
For warranty information and/or product returns, residents of Canada should contact
Leviton in writing at Leviton Manufacturing of Canada Ltd to the attention of the Quality
Assurance Department, 165 Hymus Blvd, Pointe-Claire (Quebec), Canada H9R 1E9 or by
telephone at 1 800 405-5320.
CAUTION:
TURN SWITCH TO OFF
POSITION TO OPEN THE DOOR.
0.20 in. - 0.31 in.
(5-8 mm)
ON
OFF
O
ON
OFF
O
CAUTION:
TURN SWITCH TO OFF
POSITION TO OPEN THE DOOR.
FIGURE 2 - Integral disconnect
switch with lockout.
NOTE: Pull red lockout tab out with switch
in the OFF position.