Specification T1689 Technical Manual Rev 07
DELTA Rectifier Module MV3000 Air Cooled DELTA
Page 42
Fusing
To protect a DELTA rectifier module from d.c. link side short circuits it is recommended that semi-conductor
fuses be fitted in the a.c. supply. The current rating of the rectifier module with the recommended fuses is
given in Table 2–20. Other manufacturers’ fuses may be used but they should be equivalent to the types
specified in this manual. Table 2–21 includes details of the input power circuits and the fusing arrangements.
GSGB400 (3 qty)
391
391
A100P400 (3 qty)
P
A100P500 (3 qty)
A366S800D1 (3 qty)
721
800
A100P700 (3 qty)
P
A100P1000 (3 qty)
A366S900D1 * (3 qty)
P
A366S1000 (3 qty)
A100P800 * (3 qty)
P
A100P1000 (3 qty)
GSGB400 (6 qty)
633
633
A100P400 (6 qty)
P
A100P500 (6 qty)
A366S800D1 (6 qty)
P
A366S900D1 (6 qty)
A100P700 (6 qty)
P
A100P1000 (6 qty)
Table 2–20. – Recommended Fuses For Rectifier Module Input Protection
NOTES: Semi-conductor fuses of the correct rating must be fitted to each of the three phases of the a.c. supply input
to protect against catastrophic failure of the input rectifiers.
Devices marked ‘P’ will also protect the input rectifier devices against damage from overcurrent. However, it
may result in a lower effective rectifier rating. The GDR872 (marked ‘*’) requires an additional 31 µH input
reactor (or equivalent supply fault level) and the appropriately rated fuse for fuse protection.
The fuses should be fitted remotely from the rectifier;
All ratings are calculated assuming a 31 MVA supply (fault level), no added impedance.
The ratings given at Table 2-3 are for the recommended semiconductor fuses from two suppliers. The GSGB
are from the GE Power Controls HRC fuse link range rated up to 660 V +10% (727 V) and the A366S from the
Gould Shawmut Semiconductor fuse range rated up to 660 V +10% (727 V).
The codes for fuses may not specify the mechanical details. These should be selected to suit user
requirements.
All incoming mains cables should be protected with fuses according to local wiring regulations, for example,
in Europe (or any other countries that use IEC standards) using fuses type gG and in USA and Canada using
Class L fuses.
To Next Page
Loading...
Need help?
General
