DPM:
Drive
Protection
Module
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Codes
NEC – Article 409
New in 2005!
Industrial Control Panels
409.1 Scope. This article covers
industrial control panels intended for
general use and operating at 600
volts or less.
FPN: UL 508A is a safety standard
for industrial control panels.
409.110 Marking. An industrial
control panel shall be marked with
the following information that is
plainly visible after installation:
(3) Short circuit current rating of
the industrial control panel based on
one of the following:
A. Short circuit current rating of a
listed and labeled assembly
B. Short circuit current rating established utilizing an approved method
FPN: UL 508A-2001, Supplement SB,
is an example of an approved
method.
Meaning: This ties UL 508A and its
supplements into the NEC and the
subsequent SCCR ratings for panels.
UL 508A
SB5.1.1 Effective April 25, 2006, UL
508A approved panels will be
required to include on its nameplate
rating of industrial control panels its
Short Circuit Current Rating (SCCR)
Determination of a panel’s SCCR rating is achieved by listing all of the
individual component’s ratings and
selecting the lowest value. Values
not listed on a component defer to
assumed values defined in Table
SB4.1.
Table SB4.2 defines peak let
through currents, Ip, and clearing ,
I2t, for Class CC, G, J, T, L, RK1 and
RK5 fuses at 50, 100 and 200kA.
Key is using Class J fusible disconnect switches and J fuses in feeder
and branch circuits in panels making
it easier to achieve 50, 100 or
200kA ratings
NEC and UL Standards define
required drive installation methods.
Drive Manufacturer’s are leaving
the responsiblity of meeting these
installation standards and drive
protection in the hands of the installer.
Ferraz Shawmut is committed to the introduction of new and innovative
products. Products that are focused at the end-user, providing the end-user
with time and cost savings, and optimal protection. The Drive Protection
Module combines Ferraz Shawmut manufactured components applied in
the power wiring installation stage.
1. AC Drive manufacturers
do not provide line side
branch circuit or short
circuit fuses. With both
types of protection
required, the HSJ has provided an improved solution
to fusing drives.
2. The drive manufacturers do not provide
a disconnecting means.
3. In the case of
over-voltage, drives
are being protected
by very low quality
surge devices.
4. High short circuit current ratings on
panels are not being addressed.
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Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Benefits
• Latest safety design and electrical code requirements:
- NEC 409
The Drive Protection Module reduces
total cost, time and money!
With a standard DPM
Customer Needs:
• Fuses
• DPM
- UL 508A
- NFPA 79 disconnect switch options
Without a standard DPM
Customer Needs:
• Fuses
• Disconnecting Means
• Surge Protection
Device
• Terminal Blocks
• Grounding Terminals
• Enclosure
• Wire
• Hardware
• Complete Engineering
Design
• Support
Documentation
• High-speed branch circuit fusing (Type HSJ)
• Transient voltage surge protection
• High short circuit current rating up to 100kA
• Pre-designed package, per major drive mfrs.
• IP20/touch safe products for added safety to
personnel
• Easy installation and cost savings
• Available options for custom drive requirements
• 3-5 day lead-time for standard models
UL98 Load break
disconnect switch:
with options to meet NFPA79
requirements with defeatable handle
for maintenance requirements.
HSJ Fusing:
combining the following features:
• Semiconductor protection (very low I2t)
• Compliance to NEC
Surge-Trap: the most advanced
DIN rail Surge Suppression on the
market. Surge-Trap does not require
additional fuses while meeting the
latest revisions of UL 1449 2nd Edition.
(branch circuit protection)
• Ultrasafe fuse holders are UL approved,
IP20/touch safe holders for class J fuses.
FSPDB:
UL approved IP20/touch safe power distribution block. Makes for easy
wire management when working on live
equipment.
Available on backplane
only or with enclosure.
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Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Product Range
Addressable Applications: AC Drives • HP Ratings: 1 to 30 Hp (higher ratings optional)
• Voltage Ratings: 120V - 1ph to 600V - 3ph
• SCCR: up to 100kA
DPM Product Coding
BACKPLANE ONLY
WITH ENCLOSURE
6J
class J 60A max
voltage rating
120
208
P
single
Y
wye
D
delta
112
3R
4
1 or 12
enclosure option
class J 30A max
4X SS
NEMA enclosure rating
3J
configuration
max fuse rating
DPM 3J 480 Y
NM
non-metallic
SS
stainless steel
4X
240
480
600
DPM & Fuse
Selection Process
STEP 1 - Select your drive manufacturer make, drive part number and HP rating.
STEP 2 - Select drive protection fusing from the last column of the drive manufacturers selection table.
STEP 3 - Select DPM current rating from the table provided: Selected Fuse Ampere Rating
DPM Current Rating
1A thru 30A
35A thru 60A
3J
6J
STEP 4 - Select system voltage & wiring configuration from page 5 diagrams.
STEP 5 - Select DPM mounting method: Enclosure or Backplane only.
EXAMPLE:
STEP 1 - Select your drive manufacturer make, drive part number and HP rating.
ABB, ACS series, ACS550-U1-044A-4 which is a 30HP drive.
STEP 2 - Select drive protection fusing from the last column of the drive manufacturers selection table.
HSJ60 from the fuse selection column of the ABB table off the Ferraz Shawmut website.
STEP 3 - Select DPM current rating from the table provided.
HSJ60 corresponds to the 35A thru 60A selection which points to the 6J DPM current rating.
STEP 4 - Select system voltage & wiring configuration from page 5 diagrams.
From the wiring diagrams my system is a 3 phase, 480 volts, Wye connected, (schematic C)
STEP 5 - Select DPM mounting method: Enclosure or Backplane only.
Need it in enclosure with a NEMA 4X rating in stainless steel.
A) If in enclosure - Choose required NEMA rating and enclosure material.
B) If backplane only - Reference switch section of Ferraz Shawmut product Advisor
or website for proper handle and shaft length selection.
DPM part number from selection table:
Enclosed DPM, 60A current rating, 480V, 3ph Wye connection, 4X, stainless box
Part Number: DPM6J480Y4XSS
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Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Standard DPM Data
*Note: 1 = L-N/L-G Only
2 = L-L/L-N/L-G/N-G
3 = L-L Only
Options
The DPM is designed with standard necessities in mind. We understand
that our customers will want to add different features. Below is a
list of some of our offerings:
High Speed Fuses - round or square body
Flange Mounted Handle
Control Transformer
RFI/Chokes/Filters
Auxiliary Contacts
Overload Relays
Motor Heaters
Line-Reactors
Heat Sinks
Contactors
Fans
Special applications require special
needs. Ferraz Shawmut is ready to
service you. Contact technical
services for more information.
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Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Schematics
(A) MAXIMUM 30A - 3-PHASE - WYE
DPM:<=30A – 3Ph Wye
Drive
M
(B) MAXIMUM 30A - 3-PHASE - DELTA
G
DPM:<=30A – 3Ph Delta
N
Drive
M
G
(C) GREATER THAN 30A - 3-PHASE - WYE
DPM:>30A – 3Ph Wye
Drive
M
G
(D) GREATER THAN 30A - 3-PHASE - DELTA
DPM:>30A – 3Ph Delta
N
Drive
M
G
(E) MAXIMUM 30A - SINGLE PHASE
DPM: Single Phase
Drive
M
G
5
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
Dimensions
W
W
X
X
D
Y H
H Y
ENCLOSED
BACKPLANE
(NON-ENCLOSED)
• When specifying backplane only, see www.ferrazshawmut.com/oem for switch shaft and handle options.
• 30A backplane uses switch catalog #SCV30
• 60A backplane uses switch catalog #FBJ60
For more innovative products and information, visit ferrazshawmut.com
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Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
North American Headquarters
Ferraz Shawmut
374 Merrimac Street
Newburyport, MA 01950-1998
Phone: 978-462-6662
Fax: 978-462-0181
E-mail: info@ferrazshawmut.com
ferrazshawmut.com
Global Headquarters
Ferraz Shawmut
1,rue Jean Novel
F-69100 Villeurbanne
France
Phone: +33 (0)4 72 22 66 11
Fax: +33 (0)4 72 22 67 13
Ferraz Shawmut Canada
88 Horner Avenue
Toronto, Ontario, Canada M8Z 5Y3
Phone: 416-252-9371
Toll-Free Phone: 800-267-8727
Fax: 416-252-6572
Toll-Free Fax: 800-387-3329
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com