Safety instructions
Safety instructions for the installation according to UL or UR
2
72
EDK94SH366 ZH/EN 3.1
2.4 Safety instructions for the installation according to U
L
or U
R
Warnings!
ƒ Branch circuit protection:
Suitable for use on a circuit capable of delivering not more than
100000 rms symmetrical amperes, 500 V max., when protected by the
specified fuses ( Tab. 2−1).
ƒ Voltage of the fuses must at least be suitable with the input voltage of the
drive.
ƒ The integral solid state protection does not provide branch circuit protection
and that branch circuit protection has to be provided externally in
accordance with manufacturers instructions, the National Electrical Code
and any additional codes.
ƒ For information on the protection level of the internal overload protection
for a motor load, see the corresponding Application Manuals or Software
Helps.
ƒ For information on rating and proper connection of the thermal protector
(only for connection to motors having integral thermal protection), see the
corresponding Application Manuals or Software Helps.
ƒ Maximum surrounding air temperature: 55 °C with derating.
ƒ Use 75 °C copper wire only, except for control circuits.
ƒ Control card protection:
External fuse for 24 Vdc supply voltage of control terminal X2. Rated 4 A DC
fuse UL248−14.
Branch circuit protection (UL Guide No. JHFR2)
Bussmann Alternate type
Type Fuse rating Type Ferraz−Shawmut SIBA
E94ASxE1454 250 A, 700 V 170M3016 2061032.250 6.6URD30D08A0250
E94ASxE1724 315 A, 700 V 170M3017 2061032.315 6.6URD30D08A0315
E94ASxE2024 350 A, 700 V 170M3018 2061032.350 6.6URD30D08A0350
E94ASxE2454 400 A, 700 V 170M4012 2061032.400 6.6URD30D08A0400
E94ASxE2924 500 A, 700 V 170M4014 2061032.500 6.6URD30D08A0500
E94ASxE3664 630 A, 700 V 170M4016 206xx32.600 A50−P600
E94ASxE4604 700 A, 700 V 170M4017 2061032.700 6.6URD31D08A0700
E94ASxE5724 900 A, 700 V 170M6013 2063032.900 6.6URD33D08A0900
E94ASxE6354 900 A, 700 V 170M6013 2063032.900 6.6URD33D08A0900
E94ASxE6954 900 A, 700 V 170M6013 2063032.900 6.6URD33D08A0900
Tab. 2−1
ƒ 100 kA SCCR with above fuses. (Short Circuit Current Rating)
ƒ Ferraz−Schawmut A50QS fuses may be substituted for A50−P fuses.
ƒ 170M fuses from Bussmann shown use −/80 visual indicator. −TN80 Type T, −/110 or
TN/110 Type T indicater fuses of the same size and amperage may be substituted.
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