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NOVA™ STS Single-Tank, Triple-Single, Electronically Controlled Recloser
INSTALLATION AND OPERATION INSTRUCTIONS
MN280046EN May 2016
Ratings and specifications
Check recloser ratings prior to installation
The recloser must be applied within its specified ratings.
Check data plate ratings and compare with the system
characteristics at the point of application prior to installation.
Tables 1-5 list the ratings and specifications for the NOVA
STS single-tank, triple-single recloser.
Table 1 . Voltage ratings
Description
15 kV
15 kV
27 kV
27 kV
38 kV
Maximum voltage
15.5 kV
15.5 kV
27.0 kV
27.0 kV
38.0 kV
Rated basic impulse level
110.0 kV
125.0 kV
125.0 kV
150.0 kV
170.0 kV
Radio noise limit (µv)
100 @ 9.4 kV
100 @ 9.4 kV
100 @ 16.4 kV 100 @ 16.4 kV 100 @ 23.0 kV
Power frequency withstand, dry
50 kV
50 kV
60 kV
60 kV
70 kV
Power frequency withstand, wet
45 kV
45 kV
50 kV
50 kV
60 kV
Table 2 . Current ratings
Description
15 kV
15 kV
27 kV
27 kV
38 kV
Rated Continuous Current
630 A*
630 A*
630 A*
630 A*
630 A*
Short Circuit Current, Symmetrical
12.5 kA**
12.5 kA**
12.5 kA**
12.5 kA**
12.5 kA
Making Current, Asymmetrical Peak
32.0 kA
32.0 kA
32.0 kA
32.0 kA
32.0 kA
Making Current, Asymmetrical rms
20.0 kA
20.0 kA
20.0 kA
20.0 kA
20.0 kA
* 800 A accessory is also available.
** 16.0 kA option is also available. (Making current is 41.0 kA Asymmetrical Peak and 25.0 kA Asymmetrical rms.)
Table 3 . Mechanical ratings
Description
15 kV
15 kV
27 kV
27 kV
38 kV
Min. Mechanical/Electrical Operations Without Maintenance (C-O)
10,000
10,000
10,000
10,000
10,000
Mass (Weight) - kg (lbs)
130 (288)
133 (294)
133 (294)
138 (305)
138 (305)
Mass (Weight) with Pole Mounting Hanger
183 (403)
186 (409)
186 (409)
191 (420)
191 (420)
Table 4 . Duty cycle
Percent maximum circuit interrupting rating
Minimum X/R ratio Number of unit operations at 12.5 kA Number of unit operations at 16.0 kA
15-20
4
88
44
45-55
8
112
56
90-100
17*
32
16
Total 232
Total 116
*Value shown for 60 Hz.
Table 5 . Power requirements
Voltage
Normal current
Duration
Recommended power
Heaters
Heaters
120 Vac
0.45 A
Continuous
54 VA
240 Vac
0.24 A
Continuous
57.6 VA
