MTE dV Sentry Product manual

dV Sentry™
208V –600V
TECHNICAL REFERENCE MANUAL
WARNING
High Voltage! Only a qualified electrician can carry out the electrical
installation of this filter.
Quick Reference
❶
Performance Data
Pages 5 –8
❷
Selection Guide
Pages 9 –13
❸
Installation Guide
Pages 14 –20
❹
Start-up/Troubleshooting
Pages 21 –23

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dV Sentry™Technical Reference Manual 208V –600V
III Form: DVS-TRM-E January 2018 Rev. 005
TABLE OF CONTENTS
1. SAFETY....................................................................................................................................................1
WARNINGS AND CAUTIONS........................................................................................................1
PRODUCT SAFETY LABELING .....................................................................................................1
GENERAL SAFETY INSTRUCTIONS ..............................................................................................2
2. GENERAL INFORMATION...................................................................................................................... 3
RECEIPT &REPAIR STATEMENT.................................................................................................3
ENCLOSURES ...........................................................................................................................4
AGENCY APPROVALS ................................................................................................................4
WARRANTY ..............................................................................................................................4
3. DV SENTRY PERFORMANCE DATA ..................................................................................................... 5
PERFORMANCE SPECIFICATIONS ...............................................................................................5
FILTER EFFICIENCY +WATT LOSS..............................................................................................6
PERFORMANCE CHART .............................................................................................................7
ALTITUDE DERATING.................................................................................................................8
MOTOR FREQUENCY DERATING.................................................................................................8
4. HOW TO SELECT ....................................................................................................................................9
SELECTION GUIDE ....................................................................................................................9
UNDERSTANDING THE DVSENTRY PART NUMBER: ...................................................................10
PART NUMBER SELECTION TABLES..........................................................................................11
5. HOW TO INSTALL .................................................................................................................................14
INSTALLATION CHECKLIST .......................................................................................................14
G ROUNDING ..........................................................................................................................15
POWER WIRING CONNECTION .................................................................................................16
BASIC SCHEMATIC DIAGRAM ...................................................................................................17
INTERCONNECTION DIAGRAM –PANEL (3A-110A) AND ENCLOSED (3A-600A) ...........................18
INTERCONNECTION DIAGRAM –MODULAR (130A-600A) ...........................................................19
TORQUE RATINGS...................................................................................................................20
6. START-UP..............................................................................................................................................21
S AFETY P RECAUTIONS ..........................................................................................................21
7. TROUBLESHOOTING............................................................................................................................22

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 IV
List of Figures
Figure 3-1: Typical Performance Chart ...................................................................................... 7
Figure 3-2: Altitude Derating Curve............................................................................................ 8
Figure 3-3: Current Derating for Drive Output Frequency........................................................... 8
Figure 5-1: Basic Schematic Diagram.......................................................................................17
Figure 5-2: Open Panel and Enclosed Diagram........................................................................18
Figure 5-3: Modular Diagram ....................................................................................................19
List of Tables
Table 3-1: Performance Specifications....................................................................................... 5
Table 3-2: Filter Efficiency & Watt Loss...................................................................................... 6
Table 4-1: Panel Selection Table ..............................................................................................11
Table 4-2: Enclosed NEMA 1/2 Selection Table........................................................................12
Table 4-3: Enclosed NEMA 3R Selection Table........................................................................13
Table 5-1: Overtemperature Switch...........................................................................................15
Table 5-2: Torque Ratings ........................................................................................................20
Table 7-1: Troubleshooting Guide.............................................................................................23

dV Sentry™Technical Reference Manual 208V –600V
1 Form: DVS-TRM-E January 2018 Rev. 005
1. SAFETY
Warnings and Cautions
The following symbols are used in this manual:
Product Safety Labeling
The following labels are placed on the dV Sentry product:
WARNING
High Voltage Warning: warns of situations that dangerously
high voltage is involved. Failure to use proper precautions
may lead to serious injury or death.
WARNING
General Warning: warns of situations that can result in
serious injury or death if proper precautions are not used.
Caution
General Caution: identifies situations that could lead to
malfunction or possible equipment damage.
Label notes to installer to refer to instruction manual first before
installing.
High Voltage: surfaces on product can have high voltage which can
cause injury.
Connect Thermal Switch: connecting the thermal switch can reduce
risk of damage.
Hot Surfaces: surfaces of product can be hot at times and cause
burns.

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 2
General Safety Instructions
WARNING
High Voltage! Only a qualified electrician can carry out the electrical
installation of this filter.
High voltage is used in the operation of this filter. Use Extreme caution to
avoid contact with high voltage when operating, installing or repairing
this filter. Injury or death may result if safety precautions are not
observed.
WARNING
The opening of the branch circuit protective device may be an indication
that a fault current has been interrupted. To reduce the risk of fire or
electrical shock, current-carrying parts and other components of the filter
should be examined and replaced if damaged.
An upstream disconnect/protection device must be used as required by
the National Electrical Code (NEC) or governing authority.
Even if the upstream disconnect/protection device is open, the drive
down stream of the filter may feedback high voltage to the filter. The
drive safety instructions must be followed. Injury or death may result if
safety precautions are not observed.
The filter must be grounded with a grounding conductor connected to all
grounding terminals. Modular filters must have reactor grounded
through a 2”x2” area cleaned of paint and varnish on lower mounting
bracket.
Only spare parts obtained from MTE Corporation or an authorized MTE
distributor can be used.
Caution
Loose or improperly secured connections may damage or degrade filter
performance. Visually inspect and secure all electrical connections
before power is applied to the filter.
Wiring should not be routed underneath panel in resistor housing. Doing
so could result in fire or damage to the product.
Product should not be mounted on wood or any other combustible
surface. Doing so could lead to fire or damage to the product.

dV Sentry™Technical Reference Manual 208V –600V
3 Form: DVS-TRM-E January 2018 Rev. 005
2. GENERAL INFORMATION
The purpose of the manual is to properly specify size, install, interconnect and operate the dV
Sentry motor protection filter.
For most current information, please refer to website
http://www.mtecorp.com/products/dv-sentry-dvdt-filters/
This manual is intended for use by personnel experienced in the operation and maintenance of
inverters. Because of the high voltages required by the filter, inverter and the potential dangers
presented by rotating machinery, it is essential that all personnel involved in the operation and
maintenance of this filter know and practice the necessary safety precautions for this type of
equipment. Personnel should read and understand the instructions contained in this manual
before installing, operating or servicing the filter and inverter to which it is connected.
Receipt & Repair Statement
Upon Receipt of this Filter:
The dV Sentry motor protection filter has been subjected to demanding factory tests before
shipment. Carefully inspect the shipping container for damage that may have occurred in transit.
Then unpack the filter and carefully inspect for any signs of damage. Save the shipping
container for future transport of the filter.
In the event of damage, please contact and file a claim with the freight carrier involved
immediately.
If the equipment is not going to be put into service upon receipt, cover and store the filter in a
clean, dry location. After storage, ensure that the equipment is dry and that no condensation or
dirt has accumulated on the internal components of the filter before applying power.
Repair/Exchange Procedure:
MTE Corporation requires a Return Material Authorization Number and form before we can
accept any filters that qualify for return or repair. If problems or questions arise during
installation, setup, or operation of the filter, please contact MTE for assistance at:
Toll Free: 1-800-455-4MTE (1-800-455-4683)
International Tel: [phone]
Fax: [phone]

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 4
Enclosures
MTE enclosures are designed to provide a degree of protection for electrical components and
prevent incidental personnel contact with the enclosed equipment. Depending on the enclosure
selected, these enclosures meet the requirements of NEMA 1/2 or 3R.
An approximate cross reference guide between NEMA, UL, CSA and IEC enclosure follows.
Type 1 NEMA / IEC IP20 Enclosure:
Are designed for indoor use and will provide protection against contact with the enclosed
equipment.
Type 2 NEMA / IEC IP20 Enclosure:
Are designed for indoor use and will provide protection against contact with the enclosed
equipment and provide a degree of protection against limited amounts of falling water
and dirt.
Type 3R NEMA / IEC IP23 Enclosure:
Are designed for outdoor use primarily to provide protection against contact with the
enclosed equipment and provide a degree of protection against falling rain sleet and
external ice formation.
Agency Approvals
UL and cUL listed to UL508 Type MX and CSA-C22.2 No 14-95
File E180243
CE Marked Warranty
Three years from the date of shipment. See http://www.mtecorp.com/industry-leading-warranty/
for details.

dV Sentry™Technical Reference Manual 208V –600V
5 Form: DVS-TRM-E January 2018 Rev. 005
3. dV SENTRY PERFORMANCE DATA
Performance Specifications
Table 3-1: Performance Specifications
Service Load Condition
Invertor Duty Three Phase Motors
Voltage
208 –600 VAC +/- 10%, 60Hz
Input Voltage Wave Form
PWM
Inverter Switching Frequency
2kHz –10kHz (3-110A models)
2kHz –5kHz (130A-600A models)
Inverter Operating Frequency
0 –90 Hz without derating
Maximum Ambient
Temperature
60C Open filters
50C Enclosed Filter
Insulation System
Class N (200° C)
Insertion Loss (Voltage)
1.7% at 60 Hz; 2.6% at 90 Hz
Efficiency
>99%
Current range
3A –600A
Available form factors
Panel
NEMA 1/2
NEMA 3R
Altitude without derating
3,300 feet above sea level
Maximum Motor Lead Length
1,000 feet (VFD rated cable recommended)
Relative Humidity
0% to 99% non-condensing
Current Rating
100% RMS Continuous
150% for 1 minute
200% for 10 sec
*Operating in overload will result in increased proportional
voltage drop
Audible Noise
<65db at 1 meter
Rise Time
Less than 0.1 uS
Peak Voltage @ Motor
150% of DC bus voltage up to 1,000 feet
Common Mode Reduction
50%+ Peak Current Reduction Typical

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 6
Filter Efficiency + Watt loss
Table 3-2: Filter Efficiency & Watt Loss
Maximum
Output Amps
RMS/Filter Current
Rating Amps RMS
Efficiency
(%)
Typical Power
Dissipation
(Watts*)
3
99.3%
67
4
99.3%
67
7
99.3%
67
9
99.3%
67
12
99.3%
67
17
99.3%
96
22
99.5%
91
27
99.6%
92
35
99.7%
91
45
99.8%
88
55
99.7%
137
65
99.7%
166
80
99.8%
158
110
99.8%
175
130
99.7%
273
160
99.8%
289
200
99.8%
325
250
99.8%
423
305
99.8%
481
365
99.8%
564
415
99.8%
795
515
99.8%
795
600
99.8%
822
*Based on a typical 480V, 60Hz output frequency, 1,000 feet of drive cable, 2kHz carrier
frequency at full load application.

dV Sentry™Technical Reference Manual 208V –600V
7 Form: DVS-TRM-E January 2018 Rev. 005
Performance Chart
Figure 3-1: Typical Performance Chart
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 200 400 600 800 1000 1200
Peak Voltage at Motor (Kvolts)
Cable Length (ft.)
65 Amp DV Sentry Overall Performance - 50hp 480 Vac Motor
Unfiltered
With DVSentry
1.5 x Bus
Drive Bus

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 8
Altitude Derating
Figure 3-2: Altitude Derating Curve
Motor Frequency Derating
Figure 3-3: Current Derating for Drive Output Frequency
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
1.05
80 90 100 110 120 130
Current Derating Factor
Output Drive Frequency Hertz
DV Sentry Filter Current Derating For Drive Output Frequency

dV Sentry™Technical Reference Manual 208V –600V
9 Form: DVS-TRM-E January 2018 Rev. 005
4. HOW TO SELECT
Selection Guide
The dV Sentry motor protection filter is intended for use on inverter duty motors. It will typically
be used with lead lengths up to 1,000 feet. The dV Sentry motor protection filter will provide
both common mode and differential mode reduction to prevent overvoltage that can occur due
to reflected wave phenomena. The differential mode filtering reduces EMI, increases motor life,
and reduce cables voltage stress. The added common mode protection will reduce bearing
failures, degradation of cable insulation to ground, and further reduce EMI.
The suitability of this filter for a specific application must therefore be determined by the
customer. In no event, will MTE Corporation assume responsibility or liability for any direct or
consequential damages resulting from the use or application of this filter. Nor will MTE
Corporation assume patent liability with respect to the use of information, circuits or equipment
described in this instruction manual.
NOTE: For non-inverter duty motors, please refer to MTE’s SineWave Guardian filter.
The dV Sentry motor protection filters are available in Panel, NEMA 1/2, and 3R mechanical
configurations.
Please verify information below for proper selection:
Lead Length: This product is suitable for applications with motor leads up to 1,000 ft.
Contact MTE Application Engineering for possible longer applications.
Voltage: Input voltage from 208V –600V. See Table 3-1: Performance Specifications
(p5) for specification.
*Current Rating: Support for 3 Amps –600 Amps.
Switching Frequency: Support for carrier frequency of 2kHz –10kHz. See Table 3-1:
Performance Specifications (p5).
Drive Output Frequency: Support for 0Hz to 90Hz without derating, >90Hz to 120Hz
with derating. See Figure 3-3: Current Derating for Drive Output Frequency (p8) for
derating curve.
Temperature: Maximum ambient temperature, 60C (open), 50C (enclosed). See
Table 3-1: Performance Specifications (p5) for specification.
Altitude: 3,300 feet above sea level without derating. See Figure 3-2: Altitude Derating
Curve (p8) for derating curve.
Enclosure Type: Panel, NEMA 1/2 & NEMA 3R, see Enclosures (p4) for enclosure
descriptions.
Motor Insulation Class: Verify motor meets inverter duty standards per NEMA MG1
Section 31.
* NOTE: dV Sentry filters can be paralleled for higher current ratings. Contact MTE
Application Engineering for more information.

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 10
Understanding the dV Sentry Part Number:
DVS X _ _ _ _ E
dV Sentry Filter
Type
P = Panel
G = General Purpose (NEMA 1/2)
W = Weather (NEMA 3R)
Current Rating
(i.e. 0045 is 45 Amps)
Voltage Rating
(208V –600V)

dV Sentry™Technical Reference Manual 208V –600V
11 Form: DVS-TRM-E January 2018 Rev. 005
Part Number Selection Tables
Table 4-1: Panel Selection Table
208V
Motor
HP
240V
Motor
HP
380V
Motor
KW
480V
Motor
HP
550V-
600V
Motor
HP
Filter
Amp
Rating
Part
Number
App.
Wt.
(lbs.)
OpenMagnetics
(in.)
(HxWxD)
ResistorPanel
(in.)
(H xWxD)
.5
.75
0.5-1.1
0.5-1.5
0.5-2
3
DVSP0003E
7
9.1 x 6.7 x 7.7
-
.75
1
1.5
2
3
4
DVSP0004E
7
9.1 x 6.7 x 7.7
-
1.5
2
2.2 -3
3
5
7
DVSP0007E
7
9.1 x 6.7 x 7.7
-
2
3
4
5
7.5
9
DVSP0009E
7
9.1 x 6.7 x 7.7
-
3
4
5.5
7.5
10
12
DVSP0012E
7
9.1 x 6.7 x 7.7
-
5
5.5
7.5
10
15
17
DVSP0017E
8
9.1 x 6.7 x 7.5
-
5.5
7.5
11
15
20
22
DVSP0022E
11
9.1 x 6.7 x 8.2
-
7.5
10
-
20
25
27
DVSP0027E
11
9.1 x 6.7 x 8.2
-
10
12.5
15
25
30
35
DVSP0035E
15
12.0 x 9.0 x 7.9
-
12.5
15
18.5-22
30
40
45
DVSP0045E
15
12.0 x 9.0 x 7.9
-
15
20
-
40
50
55
DVSP0055E
22
12.0 x 9.0 x 8.2
-
20
25
30
50
60
65
DVSP0065E
31
12.0 x 9.0 x 11.0
-
25
30
37
60
75
80
DVSP0080E
30
12.0 x 9.0 x 11.0
-
30
40
45 -55
75
100
110
DVSP0110E
36
12.0 x 9.0 x 11.0
-
40
50
-
100
125
130
DVSP0130E
66
13.5 x 13.6 x 7.9
18.4 x 5.0 x 7.0
50
60
75 -90
125
150
160
DVSP0160E
72
13.5 x 13.6 x 9.0
18.4 x 5.0 x 7.0
60
75
110
150
200
200
DVSP0200E
69
13.5 x 13.6 x 9.0
18.4 x 5.0 x 7.0
75
100
132
200
250
250
DVSP0250E
89
15.0 x 15.1 x 10.3
18.4 x 5.0 x 7.0
100
125
160
250
300
305
DVSP0305E
94
15.2 x 15.1 x 10.4
18.4 x 5.0 x 7.0
125
150
185-200
300
350
365
DVSP0365E
124
15.1 x 15.1 x 11.8
18.4 x 5.0 x 7.0
150
175
-
350
450
415
DVSP0415E
124
15.1 x 15.1 x 11.8
18.4 x 5.0 x 7.0
175
225
250
400–
450
500-
550
515
DVSP0515E
157
14.9 x 15.1 x 13.3
18.4 x 5.0 x 7.0
200
250
315
500
600
600
DVSP0600E
170
15.1 x 15.1 x 13.4
18.4 x 5.0 x 7.0

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 12
Part Number Selection Tables
Table 4-2: Enclosed NEMA 1/2 Selection Table
208V
Motor
HP
240V
Motor
HP
380V
Motor
KW
480V
Motor
HP
550V-
600V
Motor
HP
Filter
Amp
Rating
Part
Number
App.
Wt.
(lbs.)
NEMA1/2
Enclosure
(in.)(HxWxD)
.5
.75
0.5 –
1.1
0.5 –
1.5
0.5 -2
3
DVSG0003E
19
13.2 x 13.0 x 13.1
.75
1
1.5
2
3
4
DVSG0004E
19
13.2 x 13.0 x 13.1
1.5
2
2.2 -3
3
5
7
DVSG0007E
19
13.2 x 13.0 x 13.1
2
3
4
5
7.5
9
DVSG0009E
19
13.2 x 13.0 x 13.1
3
4
5.5
7.5
10
12
DVSG0012E
19
13.2 x 13.0 x 13.1
5
5.5
7.5
10
15
17
DVSG0017E
19
13.2 x 13.0 x 13.1
5.5
7.5
11
15
20
22
DVSG0022E
23
13.2 x 13.0 x 13.1
7.5
10
-
20
25
27
DVSG0027E
23
13.2 x 13.0 x 13.1
10
12.5
15
25
30
35
DVSG0035E
25
13.2 x 13.0 x 13.1
12.5
15
18.5 -
22
30
40
45
DVSG0045E
25
13.2 x 13.0 x 13.1
15
20
-
40
50
55
DVSG0055E
32
13.2 x 13.0 x 13.1
20
25
30
50
60
65
DVSG0065E
42
13.2 x 13.0 x 13.1
25
30
37
60
75
80
DVSG0080E
43
13.2 x 13.0 x 13.1
30
40
45 -55
75
100
110
DVSG0110E
43
13.2 x 13.0 x 13.1
40
50
-
100
125
130
DVSG0130E
97
24.0 x 17.1 x 18.5
50
60
75 -90
125
150
160
DVSG0160E
111
24.0 x 17.1 x 18.5
60
75
110
150
200
200
DVSG0200E
116
24.0 x 17.1 x 18.5
75
100
132
200
250
250
DVSG0250E
166
33.9 x 18.3 x 20.9
100
125
160
250
300
305
DVSG0305E
171
33.9 x 18.3 x 20.9
125
150
185 -
200
300
350
365
DVSG0365E
202
33.9 x 18.3 x 20.9
150
175
-
350
450
415
DVSG0415E
202
33.9 x 18.3 x 20.9
175
225
250
400 –
450
500 -
550
515
DVSG0515E
329
51.3 x 27.7 x 24.9
200
250
315
500
600
600
DVSG0600E
340
51.3 x 27.7 x 24.9

dV Sentry™Technical Reference Manual 208V –600V
13 Form: DVS-TRM-E January 2018 Rev. 005
Part Number Selection Tables
Table 4-3: Enclosed NEMA 3R Selection Table
208V
Motor
HP
240V
Motor
HP
380V
Motor
KW
380V
Motor
HP
480V
Motor
HP
550V-
600V
Motor
HP
Filter
Amp
Rating
Part
Number
App.
Wt.
(lbs.)
NEMA3R
Enclosure
(in.)
(H xWxD)
.5
.75
0.5 –
1.1
0.5 –
1.5
0.5 –
1.5
0.5 -2
3
DVSW0003E
29
15.5 x 11.0 x 12.0
.75
1
1.5
2
2
3
4
DVSW0004E
29
15.5 x 11.0 x 12.0
1.5
2
2.2 -3
3
3
5
7
DVSW0007E
29
15.5 x 11.0 x 12.0
2
3
4
5.5
5
7.5
9
DVSW0009E
29
15.5 x 11.0 x 12.0
3
4
5.5
7.5
7.5
10
12
DVSW0012E
29
15.5 x 11.0 x 12.0
5
5.5
7.5
10
10
15
17
DVSW0017E
30
15.5 x 11.0 x 12.0
5.5
7.5
11
15
15
20
22
DVSW0022E
33
15.5 x 11.0 x 12.0
7.5
10
-
-
20
25
27
DVSW0027E
33
15.5 x 11.0 x 12.0
10
12.5
15
20
25
30
35
DVSW0035E
36
15.5 x 11.0 x 12.0
12.5
15
18.5 -
22
25 –30
30
40
45
DVSW0045E
36
15.5 x 11.0 x 12.0
15
20
-
-
40
50
55
DVSW0055E
76
24.0 x 12.5 x 23.0
20
25
30
40
50
60
65
DVSW0065E
85
24.0 x 12.5 x 23.0
25
30
37
50
60
75
80
DVSW0080E
85
24.0 x 12.5 x 23.0
30
40
45 -55
60 –75
75
100
110
DVSW0110E
90
24.0 x 12.5 x 23.0
40
50
-
-
100
125
130
DVSW0130E
142
33.9 x 18.3 x 26.0
50
60
75 -90
100 –
120
125
150
160
DVSW0160E
158
33.9 x 18.3 x 26.0
60
75
110
150
150
200
200
DVSW0200E
161
33.9 x 18.3 x 26.0
75
100
132
175
200
250
250
DVSW0250E
177
33.9 x 18.3 x 26.0
100
125
160
220
250
300
305
DVSW0305E
172
33.9 x 18.3 x 26.0
125
150
185 -
200
250 –
270
300
350
365
DVSW0365E
212
33.9 x 18.3 x 26.0
150
175
-
-
350
450
415
DVSW0415E
202
33.9 x 18.3 x 26.0
175
225
250
340
400 –
450
500 -
550
515
DVSW0515E
342
51.3 x 27.7 x 30.0
200
250
315
430
500
600
600
DVSW0600E
353
51.3 x 27.7 x 30.0

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 14
5. HOW TO INSTALL
Installation Checklist
WARNING
Prior to installation, please review the safety instructions on pages 1 & 2.
Failure to practice this can result in body injury!
Input and output wiring to the filter should be performedbyauthorized personnel
inaccordancewithNECand all local electrical codes and regulations.
WARNING
The filter is designed for use with copper conductors with a minimum
temperature rating of 75 degrees C.
The dV Sentry filters are supplied in the following mechanical configurations:
•Panel assemblies (3A-110A): Reactor and resistor are assembled on a panel and pre-wired
together.
•Modular assemblies (130A-600A): Resistors are pre-wired to a terminal block on a panel and
shipped with a modular reactor.
•Floor mounted general purpose NEMA 1/2 & 3R cabinets (3A - 600A): Reactor and
resistor/resistor panel are supplied in a cabinet with all items pre-wired together.
NOTE: 3A –110A panel mounted assemblies are designed for mounting horizontally
(base) or vertically (back panel) in the customer’s enclosure. Vertically mounted filters
must have terminal block on top.
130A –600A modular units are designed for horizontal (base) mounting only.
Minimum Required Space:
When determining the internal temperature rise and cooling requirements of the enclosure,
include the power dissipation of the filter along with all the other components located in the panel.
A general guideline is to allow a side clearance of four (4) inches and a vertical clearance of six
(6) inches for proper heat dissipation and access within the enclosure. Clearances may be less if
proper ventilation exists. Filter components must operate within temperatures specified in this
manual or filter operating life will be compromised. Also, be aware of minimum electrical
clearances as defined by the appropriate system safety standard(s). Open panel dV Sentry filters
generate heat and should be positioned away from heat sensitive components. Avoid locations
where the filter would be subjected to excessive vibrations. Locate the filter as close to the inverter
as possible.
General purpose NEMA 1/2 and 3R enclosed filters are designed for floor mounting in an
environment suitable for the enclosure type. Do not install in or near a corrosive environment.
Avoid locations where the filter would be subjected to excessive vibrations. Allow a minimum side
and back clearance of eight (8) inches and front clearance of thirty-six (36) inches for proper heat
dissipation and access.

dV Sentry™Technical Reference Manual 208V –600V
15 Form: DVS-TRM-E January 2018 Rev. 005
Grounding
NOTE: For cable shield grounding follow the drive manufacturer’s recommendations.
Overtemperature Interlock
An overtemperature interlock circuit should be used in conjunction with thermal switch to turn off
the drive to prevent filter damage due to abnormal operating conditions. The temperature switch
is normally closed and will open when an internal reactor temperature of 150°C is reached. See
Table 5-1 below for contact rating information and the drive user manual for interconnection
information.
Table 5-1: Overtemperature Switch
NC Switch opens at 150 Deg. +/- 5 Deg. C
Current Amps
Voltage
Contact Load
6
120 AC
Resistive Loads
3
120 AC
Inductive Loads
3
240 AC
Resistive Loads
2.5
240 AC
Inductive Loads
8
12 VDC
Resistive Loads
4
24 VDC
Resistive Loads
MTE highly recommends the use of the overtemperature switch to prevent damage to the filter
in rare instances of overheating from abnormal operating conditions.
WARNING
The filter must always be grounded with a grounding conductor connected to
ground terminals.
For panel mounted units, ensure a 2” x 2” area is cleaned of paint and varnish
on lower mounting bracket for ground connection.

dV Sentry™Technical Reference Manual 208V –600V
Form: DVS-TRM-E January 2018 Rev. 005 16
Power Wiring Connection
Verify that the power source to which the filter is to be connected is in agreement with the
nameplate data on the filter. A fused disconnect switch or circuit breaker should be installed
between the filter and its source of power in accordance with the requirements of the NEC and
all local electrical codes and regulations. Refer to the drive user manual for selection of the
correct fuse rating and class.
For 3A –110A panel mounted filter applications, interconnection between the filter, its power
source, and the drive is shown in Figure 5-2: Open Panel and Enclosed Diagram (p18).
For 130A –600A open panel filter applications, interconnection between the filter, its power
source, the resistor panel, and the drive is shown in Figure 5-3: Modular Diagram (p19).
For all filters supplied in general purpose NEMA 1/2 & 3R cabinets, interconnection between the
filter, its power source, and the drive is shown in Figure 5-2: Open Panel and Enclosed Diagram
(p18).
Wire gauge range and terminal torque requirements for the dV Sentry and the resistor panel are
shown in Table 5-2: Torque Ratings (p20).
Refer to the drive user manual for instructions on interconnecting the drive and motor and the
correct start-up procedures for the drive.
The filter is designed for use with copper conductors with a minimum temperature rating of 75
degrees C.
WARNING
Input and output power wiring to the filter should be performed by authorized
personnel in accordance with the NEC and all local electrical codes and
regulations.
Cable lugs and mounting hardware are provided by the customer.
Any extremely low or high resistance readings indicate miswiring and may result
in damage to filter components if not corrected.
On NEMA 3R enclosures, CAB-26AP and larger, no live parts shall be mounted
below 8 inches from the bottom of the enclosure.