3
Ratings and specifications
Check recloser ratings prior to installation
The recloser must be applied within its specified ratings. Check nameplate ratings and compare with the
system characteristics at the point of application prior to installation. Tables 1, 2, 3, and 4 list the ratings and
specifications for the NOVA i recloser.
NOVA
®
15i, NOVA 27i, and NOVA 38i; Three-phase
microprocessor-controlled; installation and operation
instructions (S280-43-1)
Instructional Literature
IL0104001E
Effective January 2017
Table 1
Voltage ratings (kV)
Description
15 kV
27 kV
38 kV
Rated Basic Impulse Level (BIL)
Radio Noise Limit (µv)
Power Frequency Withstand, Dry
Power Frequency Withstand, Wet
110 kV
100 @ 9.4 kV
50 kV
45 kV
125 kV*
100 @ 16.4 kV
60 kV
50 kV
170 kV
100 @ 23.0 kV
70 kV
60 kV
Table 2
Current ratings (A)
Description
15 kV
27 kV
38 kV
Rated continuous current
Short circuit current
Symmetrical making current
Peak making current
630 A*
12.5 kArms**
12.5 kArms**
31.5 kApeak
630 A*
12.5 kArms**
12.5 kArms**
31.5 kApeak
630 A*
12.5 kArms
12.5 kArms
31.5 kApeak
Table 3
Mechanical ratings
Description
15 kV
27 kV
38 kV
Min. Mechanical/electrical operations
without maintenance (c-o)
Mass (weight) - kg (lbs.)
10,000
10,000
10,000
110 (242)
115 (253)
125 (275)
Table 4
Duty cycle*
Number of
Minimum
Circuit X/R Value
Type
Unit Operations
NOVA i
15-20 44 4
45-55
56
8
90-100
16
17
Total 116
Percentage of
Interrupting Rating
* 800A option available.
**16.0kArms option available (40KApeak for peak making current).
*150kV option available.
*Compliant with IEC 62271-111 2005
*Compliant with
IEEE Standard C37.60-2012 ™
