Short-Circuit Current Ratings (SCCR) and branch circuit protection
The combinations in the tables have been tested per UL508C (Reference UL file E116875).
These ratings are in addition to ratings on the nameplate of the product.
The values for the overcurrent protection devices are the maximum allowable amp size. Smaller amp ratings may be used.
Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protection must be provided in accordance with the National Electrical Code and any additional local codes.
The devices are provided with software integral overload and over speed protection for the motor. Protection at 110% of the full load motor current. The motor thermal protection current (ItH) must be set to the rated
current indicated on the motor nameplate. (For detail see the programming manual).
75°C (167 °F) copper conductor with the AWG wire size for all products, except ATV71HC13N4p to ATV71HC50N4p, ATV71HC11Y to ATV71HC63Y:60°C (140°F) / 75°C (167 °F) copper conductor with the AWG
wire size.
Suitable for use on a circuit capable of delivering not more than___X___rms symmetrical kiloAmperes,___Y___Volts maximum, when protected by___Z1___with a maximum rating of___Z2___.
This column shows the maximum prospective short circuit current value that cannot be exceeded without adding input impedance.
Electrical distribution systems with a higher prospective short circuit current will cause higher input currents in the front end of the drive.
It is possible for the tested SCCR rating of the drive to be lower than this Input rating. The tested SCCR rating can be higher than this input rating when a line reactor is used.
2.
An ATV71 output short circuit test was performed for 100 kA. In addition to providing a rating based on shorting the output of the drive, these short circuit rating have been obtained by shorting components internal
to the Altivar 71. These ratings allow proper coordination of short circuit protection. The integral solid state short circuit protection in the drive does not provide branch circuit protection. Branch circuit protection must
be provided in accordance with the National Electrical Code and any local codes. The listed line reactor or minimum impedance is required to obtain ratings above the Input Rating.
3.
Ratings apply to an Altivar 71 mounted in a non-ventilated Type 1, 3R, 4(X) or 12 rated enclosure. Use noted ratings when using a Type 1 conduit kit. Minimum enclosure volume allows for the specified SCCR. Your
application specific thermal requirements may require a larger enclosure.
4.
The fuse ratings in this column are for an Altivar 71 drive installed with a VW3A92pppp Type 1 conduit kit. These fuse ratings in this column can also apply to Altivar 71 drive installed in a Type 1, 3R, 4(X) or 12 rated
enclosure that has a minimum volume listed in the table.
5.
Circuit breakers with lower interrupt ratings can be used within the same circuit breaker frame rating. For 200 / 240 Vac, replace with HGL or JGL for 65kA interrupt rating. For 380 / 480 Vac, replace with HGL or JGL
for 35kA or HJL or JJL for 65kA interrupt rating. For 500 / 600 Vac, replace with HJL for 25kA or HGL for 18kA, or HDL for 14kA interrupt rating.
6.
480 V ratings are for Wye connected electrical distribution systems only.
GV2Ppp self protected manual combination starter must be used with GV2GH7 insulating barrier to meet UL 508 Type E rating
GV3Ppp self protected manual combination starter must be used with GV3G66 + GVAM11 insulating barrier to meet UL 508 Type E rating
7.
Use fast acting fuse or time delay Class J
8.
Fuse type Class CC
www.schneider-electric.com 5/8 S1B86988 - 04/2014
Page 6
Input
Voltage
50/60 Hz
Y
Altivar 71
(HP) (kW) (A)Reference:
Input
Rating:
1
(kA)
Minimum
Inductance
(mH)
Line
Reactor
Reference
with Circuit Breaker
PowerPact10
Z1, Z2
SCCR
(kA)
X
3
Minimum
Enclosure
Volume
(in3)
GVpP
Type E
Z1, Z2
6
GVpP
Voltage
Rating
(V)
Short Circuit Current Ratings
GVpP
Power
(HP)
3
SCCR
(kA)
X
with GVpP
Maximum
Minimum
enclosure
Volume
(in3)
2
Ampere
Rating
Three-phase Input, without line reactor
7555221 ATV71HD55M3X35----------350
Fuse
(A)
Z1, Z2
with Fuses
6
3
Minimum
SCCR
enclosure
(kA)
X
1022749350
Volume
(in3)
with Fuses and Type 1 kit
Fuse
Ampere
Rating
(A)
Z1, Z2
6
Minimum
SCCR
enclosure
(kA)
Volume
X
1022749
(in3)
4
10075 285 ATV71HD75M3X35----------450
200/240V
Three-phase
12590 179ATV71HD90N435----------300
150 110 215ATV71HC11N435----------300
200 132 259ATV71HC13N435----------400
250160314ATV71HC16N450 --- -- --- - -400
300 200 387ATV71HC20N450----------500
400 250 481ATV71HC25N450----------600
450 280 550 ATV71HC28N450----------600
380/480V
Three-phase
500315616ATV71HC31N430 --- -- --- - -800
600 400 759 ATV71HC40N430----------2 x 500
700 500 941 ATV71HC50N442----------2 x 600
Footnotes are on page 8.
6
1028416450
6
3545900250
6
3545900300
6
3545900350
5
5045900400
5
5053550500
5
5053550600
5
5053550700
7
3095579---
6, 9
3095579---
6, 9
42120265---
6
6
6
6
6
6
6
6
1028416
1022749
1028416
1031 117
1840250
1854450
1854450
3054450
www.schneider-electric.com 6/8 S1B86988 - 04/2014
Page 7
Input
Voltage
50/60 Hz
Y
Altivar 71
(HP) (kW) (A)Reference:
7555221
ATV71HD55M3Xp
2
Fuse
Ampere
Rating
(A)
Z1, Z2
with Fuses
SCCR
(kA)
X
3
Minimum
enclosure
Volume
(in3)
Input
Rating:
(kA)
Inductance
1
Minimum
(mH)
Line
Reactor
Reference
with Circuit Breaker
PowerPact10
Z1, Z2
SCCR
(kA)
X
3
Minimum
Enclosure
Volume
(in3)
GVpP
Type E
Z1, Z2
6
GVpP
Voltage
Rating
(V)
Short Circuit Current Ratings
GVpP
Power
(HP)
3
SCCR
(kA)
X
with GVpP
Maximum
Minimum
enclosure
Volume
(in3)
Three-phase Input, with line reactor
8
350.045RL25001 - -- -----350 61022749350
with Fuses and Type 1 kit
Fuse
Ampere
Rating
(A)
Z1, Z2
6
Minimum
SCCR
enclosure
(kA)
Volume
X
1022749
(in3)
4
100 75285
200/240V
Three-phase
125 90179 A TV71HD90N4p8350.15 RL16002LLL3640010043200-----300
A: The ATV71 supply must be split up in front of the line reactors, if they are used.
B: The monitoring of the fuses is necessary to protect the inverter against unbalanced load. It must act on mains contactor
or pulse inhibit (e.g. digital input "External fault", see Programming guide)
HS: Main switch (to be used if required according to the local regulations)
NH: Mains fuses considering table "Fuse Ampere Rating" (absolutely necessary)
NS: Mains contactor (to be used if required according to the local regulations)
This column shows the maximum prospective short circuit current value that cannot be exceeded without adding input impedance.
Electrical distribution systems with a higher prospective short circuit current will cause higher input currents in the front end of the drive.
It is possible for the tested SCCR rating of the drive to be lower than this Input rating. The tested SCCR rating can be higher than this input rating when a line reactor is used.
Add the inductance referred in the table at the input of the drive if installing the drive on a system with higher prospective short circuit current.
A 3% (minimum) input line reactor or equivalent inductance is required for the 500..600 Vac Altivar 71s and provides the listed value with the listed fuse protection.
2.
An ATV71 output short circuit test was performed for 100 kA. In addition to providing a rating based on shorting the output of the drive, these short circuit rating have been obtained by shorting components internal to the
Altivar 71. These ratings allow proper coordination of short circuit protection.
Note: The integral solid state short circuit prot ection in the drive does not provide branch circuit protection. Branch circuit protection must be provided in accordance with the National Electrical Code and any local codes.
The listed line reactor or minimum impedance is required to obtain ratings above the Input Rating.
3.
Ratings apply to an Altivar 71 mounted in a non-ventilated Type 1, 3R, 4(X) or 12 rated enclosure. Use noted ratings when using a Type 1 kit. Minimum enclosure volume allows for the specified SCCR. Your application specific thermal
requirements may require a larger enclosure
4.
The fuse ratings in this column are for an Altivar 71 drive installed with a VW3A92pppp Type 1 conduit kit. Fuse type must be fast acting Class J fuses unless otherwise noted . These fuse ratings in this column can also apply to
Altivar 71 drives installed in a Type 1, 3R, 4(X), or 12 rated enclosure that has a minimum volume listed in the table
5.
Use Bussmann fuses Class J ref. LPJpppSP series, 600V max .
6.
Fuse Class J / fast acting, 600V max.
7.
Fuse Class T / fast acting, 600V max
8.
Can be ordered without a DC Choke for connections to the DC BUS or when using a line reactor by adding D at the end of the reference.
9.
The following diagrams show how to address drives with two rectifiers:
10.
Circuit breakers with lower interrupt ratings can be used within the same circuit breaker frame rating. For 380 / 480 Vac, replace LLL with LDL for 18kA or LGL for 35kA or LJL for 65kA interrupt rating.