Dimensions - Standard
15.88”
403mm
3”
76.2mm
.63” max
16mm
3”
76.2mm
‘R’ Rated Motor Fuses
D
15.88”
403mm
3”
76.2mm
.63” max
16mm
3”
76.2mm
DD
6.31”
160mm
Dimensions - ‘B’ bolt-in
3”
76.2mm
15.88”
403mm
.44” X .91” Slots
(1.53” c.t.c.)
.63” max
16mm
3”
76.2mm
3.6”
91.4mm
3”
76.2mm
.63” max
16mm
3”
76.2mm
7.6”
193mm
17.8”
457mm
Front view
19.3”
490mm
Dimensions - GE Tags
Dimensions for GE tags are dictated by the GE starters they fit into.
Other Medium Voltage Products
- ‘E’ Rated Distribution Fuse to 28.8kV
- DIN Distribution Fuses to 38kV
- Load Break Switches to 38kV
- Capacitor Fuses
- Adapter Kits & Live Parts
- Remote Indicator Kits
- Clips & Insulators
- PT Fuses to 38kV
pub: MVR09-1
Printed in Canada
Head Office
599 Norris Court
Kingston, On. K7P2R9
Toll Free T: 800-479-3875
Toll free F: 800-866-7690
Intl T: 613-384-4144
Intl F: 613-384-0167
E: info@fusetek.com
W: www.fusetek.com
2.75kV, 5.5kV & 8.3kV ‘R’ Rated Motor Fuses
MVR
MVR
‘R’ Rated Motor Fuses
‘R’ Rated Motor Fuses
KNOWLEDGE, SERVICE, SOLUTIONS
‘R’ Rated Motor Fuses
HV Accessories
600 Amp clip for 3” diameter barrels
MVR fuses are current and energy limiting fuses intended for the
backup protection of medium voltage motor control. They are
non-venting.
p/n. FC3R
Steel backup spring for high pressure contact.
Compatible with any 3” diameter fuse.
MVR fuses have integral striker/indicators and have standardized
dimensions compatible with today’s 5.5kV motor control gear.
They are fully interchangeable with other manufacturers’ fuses of
the same type and rating.
Hookeye Add on
They feature a ‘field toughened’ element design which makes
them less susceptible to mechanical damage during shipping and
installation while also providing superior cycling characteristics.
p/n. Hookeye
Hookeye kit is compatible with any 3” diameter
fuse. May be ordered separately.
Features
• Integral indicating pin
• Standard “R” Ratings
• Toughened element design
Epoxy Resin Insulators
p/n. refer to Fusetek
• Fully plated parts
We carry a range of epoxy resin insulators
from 7.2kV to 38kV. Tapped brass inserts can
accomodate a wide range of equipment.
MVR Series General Specifications
Series
Vac
MVR2
2.75kV
MVR5
5.5kV
MVR8
8.3kV
I.R
Clip Diam
50kA rms symm
3”
Clip centers
Ratings
Options
7” (178mm)
25A, 30A, 2R,
3R, 4R, 5R, 6R,
9R, 12R, 18R,
24R, 36R
B,Y,S,X,1B,1iB
12” (305mm)
12” (305mm)
B,Y,S
B,Y,S
Medium voltage LED line Indicators
p/n. KF22-12
Bolt these line indicators onto any convenient
live part and the high brightness LED cluster
will flash to indicate presence of voltage.
Rated for 2.5kV - 38kV
Options
Standard fuses are clip-in design with 3” diameter barrels (18R - 36R are double barrel designs) and have an integral striker/indicator pin. Several options are available to make them compatible with other manufacturers’ specialized designs. Add suffixes
to the part number as required. More than one option can be specified.
All options are not available in some voltages.
1B
GE 1B-Bolt-in
Standard
Hook-eye
Bolt-in
Extended
1iB
GE 1iB-bolt-in
Inverted
Medium Voltage Microswitch
p/n. 3100110
Need more than visual indication? Our remote
mount microswitch is good for all systems up
to 38kV. The insulated Bowden cable is actuated by the fuse striker which then actuates the
microswitch at the other end.
Medium voltage bases
Fusetek can supply single or 3 pole bases for
most of the medium voltage fuses we supply.
p/n. refer to Fusetek
MVR
MVR
‘R’ Rated Motor Fuses
KNOWLEDGE, SERVICE, SOLUTIONS
‘R’ Rated Motor Fuses
Part Number System
8.3kV Total Clearing Time Current Characteristics
MV
R
5
/ 09R
- DI
XYS
100
2R
3R
4R
5R
6R
9R
12R
18R
24R
36R
Time in Seconds
10
MV
Series
5
Medium Voltage
R Motor Fuse
Voltage Class
Rating
Body Size
2 = 2.75kV
25A, 30A
2R, 3R
4R, 5R
6R, 9R
12R, 18R
24R, 36R
D = Single 3”
5 = 5.5kV
8 = 8.3kV
DI
XYS
Option Modifier
DD = Double 3”
I = Striker (standard)
X = 2” extension
B = Bolt-in
S = Div. 1, class ll
Y = Hookeye
1B = GE Tags
1iB = GE inverted tags
Installation Notes:
R Rating Defined
1. When replacing ‘R’ fuses, always replace with the
same ‘R’ rating to maintain coordination and motor
starting capability.
2. These fuses can replace any manufacturers’ fuse of
same ‘R’ rating.
1
09R
3. Ensure that fuse clips have good tension. (if you can
spin the fuse in the clips easily, clips should be
replaced.)
The ‘R’ rating of a fuse is established by dividing the
20-35s melt current of the fuse by 100.
Fuses of the same ‘R’ rating will have the same time
current characteristics and ensure identical motor starting performance and coordination with the overload
relays.
4. Clean all contact surfaces before installation.
5. Install with striker pin facing up.
6. Unless the cause of fuse failure is known to have been confined to 1 phase, fuses should be replaced in sets of 3
to ensure ‘As new’ performance.
0.1
Technical data presented.
Amp Rating
Each fuse has both an assigned ‘R’ and amp rating. It is the ‘R’ rating of the fuse that governs the motor
starting capability and coordination with the overload relays. To maintain the same capabilities, fuses
should be replaced with matching ‘R’ ratings.
0.01
100
9R
200A
On direct across the line starts, the necessity of passing the motor starting current results in a fuse selection with an
assigned amp rating well above the nominal motor full load amps.
1000
10000
RMS Amperes
100000
However, applications using reduced voltage starts, variable frequency drives or other methods to reduce the motor
starting current, can result in a fuse rating with an amp rating too close to the motor F.L.A. As a check, the fuse’s assigned full load amp rating should be a minimum of 140% of the nominal full load amps of the motor.
MVR
MVR
‘R’ Rated Motor Fuses
KNOWLEDGE, SERVICE, SOLUTIONS
‘R’ Rated Motor Fuses
Total Clearing time current characteristics
Peak Let-thru Characteristics
Use these characteristics to evaluate busbar bracing requirements and withstand capability of down-the-line components.
Read RMS fault value on lower scale and read up to where it intersects the line for the fuse you are evaluating. From this intersection point, read across to the left hand scale to obtain the peak current let-thru. Note: this value is in peak asymmetrical amperes.
To convert to RMS symmetrical, divide by 2.3. Peak let-thru graph is valid for all voltage classes.
100
90
80
70
60
Time current Characteristic curves.
18R (390A)
12R (230A)
40
30
9R (200A)
6R (170A)
5R (150A)
4R (130A)
3R (100A)
Characteristic curves are generated with the fuse at an ambient
temperature of 24-26oC. Ambient temperatures higher than 30o C may
require fuse de-rating. Please contact Fusetek in this instance.
Peak Let-Thru - Assymmetrical Amperes X 1000
20
Time current curves shown on pages 4-6 are minimum melting curves. For total clearing,
please refer to the curves on pages 7-9.
5.5kV Total Clearing Time Current Characteristics
5.5kV Total Clearing Time Current Characteristic
24R (450A)
50
10
9
8
7
6
2R (700A)
25A/30A
5
4
3
100
30A
2R
3R
4R
5R
6R
9R
12R
18R
24R
36R
2
1
.9
.8
.7
.6
.5
.4
.3
.2
1
.09
.08
.07
.06
.05
.04
.03
20000
60000
70000
80000
90000
100000
40000
30000
RMS Symmetrical Amperes
50000
2000
3000
4000
5000
6000
7000
8000
9000
10000
40 50 60 70
200
30
300
20
400
5 6 7 8 9 10
80
90
100
.01
500
600
700
800
900
1000
.02
10
Standard duty is defined as: 2 evenly spaced starts per hour, 25 C ambient temperature, 10 second run-up time and
a starting current of no more than 6X the nominal full load amp of the motor.
o
If any of these parameters are exceeded - use the heavy duty (HD) column.
The graphic on the right is a screen shot from our free
Fusesoft 5.0 fuse selection software and shows the ideal
coordination between the fuse, overload relay and motor
starting current. The motor starting tables were generated
using this software. Fusesoft 5.0 can be downloaded at no
charge by visiting www.fusetek.com
Time in Seconds
Motor Application Tables.
1
0.1
•
Select the appropriate HP rating in the left column
•
Read across to the appropriate voltage and duty
column (Std or HD)
•
Use the ‘R’ rating of fuse specified
•
5.5kV fuses may be used on 2.3kV control.
0.01
100
1000
10000
RMS Amperes
100000
MVR
MVR
‘R’ Rated Motor Fuses
KNOWLEDGE, SERVICE, SOLUTIONS
‘R’ Rated Motor Fuses
2.75kV Motor Fuses - 7” clip center
Total Clearing time current characteristics
These time current curves have been plotted to maximum test points so any variations should be negative. Curves
are based on tests at an ambient of 25 C with fuses starting from cold with no initial load.
o
2.75kV Minimum Melt Time Current Characteristics
100
25A
2R
3R
4R
5R
2.75kV
ClearingTime
TimeCurrent
CurrentCharacteristics
Characteristic
2.75kV Total
Total Clearing
25A
2R
3R
4R
5R
6R
9R
12R
18R
24R
1
A
F.L.A.
MVR2/025A-DI
25A
25A
3
10.8
MVR2/02R-DI
2R
70
3
10.8
MVR2/03R-DI
3R
100
3
10.8
MVR2/04R-DI
4R
130
3
10.8
MVR2/05R-DI
5R
150
3
10.8
MVR2/06R-DI
6R
170
3
10.8
MVR2/09R-DI
9R
200
3
10.8
DxL
(inches)
MVR2/12R-DI
12R
230
3
10.8
MVR2/18R-DDI
18R
390
2X3
10.8
MVR2/24R-DDI
24R
450
2X3
10.8
3”
76.2mm
10.88”
276.35mm
.63” max
16mm
3”
76.2mm
.63” max
16mm
3”
76.2mm
3”
76.2mm
10.88”
276.35mm
DD
0.01
100
1
Avail.
Options
50kA
rms
B,Y,S
1000
10000
6.31”
160mm
100000
RMS Amperes
2.75kV Peak Current Let-through
2.75 kVPeak Current Let-through
9R/12R
6R
5R
4R
3R
2R
30
20
10
9
8
7
6
5
4
3
25A
2
1
.9
.8
.7
.6
.5
.4
.3
30000
40000
50000
60000
70000
80000
90000
100000
20000
4000
5000
6000
7000
8000
9000
10000
3000
2000
.2
200
100000
24R
18R
300
400
500
600
700
800
900
1000
10000
1000
RMS Amperes
100
90
80
70
60
50
40
100
0.1
0.01
100
I.R
kA
D
0.1
Peak instantaneous Let Through current in Kilo Amperes
Time in Seconds
10
10
Time in seconds
100
6R
9R
12R
18R
24R
General Specifications
Part
Number
Available Current in Amperes
Fuse selection for Motors rated at 2.75kV or less
Motor HP
Fuse ‘R’ rating
Standard Duty
Heavy Duty
100
2R
2R
150
3R
3R
200
4R
5R
250
4R
5R
300
5R
6R
350
6R
6R
400
9R
9R
450
9R
9R
500
9R
12R
600
12R
12R
700
12R
18R
800
18R
18R
900
18R
18R
1000
18R
24R
1250
24R
24R
MVR
MVR
‘R’ Rated Motor Fuses
5.5kV Motor Fuses - 12” clip center
8.3kV Motor Fuses - 12” clip center
MVR5/030A-DI
30A
30A
3
15.8
MVR5/02R-DI
2R
70
3
15.8
MVR5/03R-DI
3R
100
3
15.8
MVR5/04R-DI
4R
130
3
15.8
MVR5/05R-DI
5R
150
3
15.8
MVR5/06R-DI
6R
170
3
15.8
MVR5/09R-DI
9R
200
3
15.8
MVR5/12R-DI
12R
230
3
15.8
MVR5/18R-DDI
18R
390
2X3
15.8
MVR5/24R-DDI
24R
450
2X3
15.8
MVR5/36R-DDI
36R
650
2X3
15.8
0.1
15.88”
403mm
.63” max
16mm
I.R
kA
50kA
rms
3”
76.2mm
10000
2R
3R
4R
5R
6R
9R
12R
18R
24R
36R
10
B.Y.S,X
1
0.1
.63” max
16mm
1000
2
1
.9
.8
.7
.6
.5
.4
.3
30000
40000
50000
60000
70000
80000
90000
100000
20000
4000
5000
6000
7000
8000
9000
10000
3000
2000
200
300
400
500
600
700
800
900
1000
.2
Available Current in Amperes
30A
2R
70
3
15.8
MVR8/03R-DI
3R
100
3
15.8
MVR8/04R-DI
4R
130
3
15.8
MVR8/05R-DI
5R
150
3
15.8
MVR8/06R-DI
6R
170
3
15.8
MVR8/09R-DI
9R
200
3
15.8
MVR8/12R-DI
12R
230
3
15.8
MVR8/18R-DDI
18R
390
2X3
15.8
MVR8/24R-DDI
24R
450
2X3
15.8
MVR8/36R-DDI
36R
650
2X3
15.8
15.88”
403mm
I.R
kA
Avail.
Options
50kA
rms
B.Y.S
.63” max
16mm
3”
76.2mm
10000
100000
3”
76.2mm
15.88”
403mm
.63” max
16mm
3”
76.2mm
DD
6.31”
160mm
150
2R
2R
200
2R
2R
250
3R
3R
300
3R
3R
350
3R
4R
400
4R
5R
450
4R
5R
500
5R
6R
600
5R
6R
700
6R
9R
800
9R
9R
900
9R
12R
1000
9R
12R
1250
12R
18R
1500
18R
18R
8.3kV
Peak Current Let-through
8.3 kVPeak Current Let-through
100
90
80
70
60
50
40
36R
24R
18R
9R/12R
6R
5R
4R
3R
2R
30
20
10
9
8
7
6
5
4
3
2
1
.9
.8
.7
.6
.5
.4
.3
.2
200
30A
Heavy Duty
30A
300
400
500
600
700
800
900
1000
10
9
8
7
6
5
4
3
Standard Duty
100
100
9R/12R
6R
5R
4R
3R
2R
20
DxL
(inches)
Fuse ‘R’ rating
Peak instantaneous Let Through current in Kilo Amperes
24R
18R
30
100
Peak instantaneous Let Through current in Kilo Amperes
36R
MVR8/02R-DI
RMS AMPERES
Fuse selection for Motors rated at 5.5kV or less
100
90
80
70
60
50
40
F.L.A.
3”
76.2mm
0.01
100
Motor HP
A
6.31”
160mm
RMS Amperes
5.5 kV Peak Current Let-through
Part
Number
D
100000
2.75kV Peak Current Let-through
General Specifications
3”
76.2mm
DD
1000
100
3”
76.2mm
D
15.88”
403mm
8.3kV Minimum Melt Time Current Characteristics
Avail.
Options
30000
40000
50000
60000
70000
80000
90000
100000
3”
76.2mm
DxL
(inches)
20000
1
F.L.A.
4000
5000
6000
7000
8000
9000
10000
Time in seconds
10
A
3000
30A
2R
3R
4R
5R
6R
9R
12R
18R
24R
36R
Time in seconds
100
General Specifications
Part
Number
2000
5.5kV Minimum Melt Time Current Characteristics
0.01
100
KNOWLEDGE, SERVICE, SOLUTIONS
‘R’ Rated Motor Fuses
Available Current in Amperes
Fuse selection for Motors rated at 8.3kV or less
Motor HP
Fuse ‘R’ rating
Standard Duty
Heavy Duty
250
2R
2R
300
2R
2R
350
2R
2R
400
2R
3R
450
3R
3R
500
3R
4R
600
3R
4R
700
4R
5R
800
4R
5R
900
5R
6R
1000
5R
6R
1250
6R
9R
1500
9R
12R