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Ratings and specifications
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.
Table 1 through Table 5 list the ratings and specifications
for the NOVA NX-STS recloser.
Table 1 . Voltage ratings (kV)
Description
Rated maximum voltage (kV, rms)
Nominal system voltage (kV, rms)
Rated short-duration power-frequency withstand voltage (kV, rms)
Rated lightning impulse withstand voltage (kV, peak)
For 29.2 kV rated maximum voltage applications, a 38 kV recloser is recommended. Short-circuit breaking current is limited to 12.5 kA in this rating configuration.
a
Table 2 . Current ratings (amperes)
Description
Rated continuous current (A)
Rated short-time withstand circuit current (kA)
Rated peak withstand circuit current (kA peak)
Rated duration of short-circuit (s)
Rated short-circuit breaking current (kA, sym)
Rated symmetrical (short-circuit) making current (kA, sym)
Rated line charging interrupting current (A)
Rated cable charging interrupting current (A)
Other selections may include 800 A continuous current with 12.5 kA short-time withstand circuit current rating, or 630 A continuous current with 16 kA
a
short-time withstand circuit current rating. All remaining ratings shall follow beneath the short-time withstand circuit current rating as depicted above.
Table 3 . Mechanical ratings
Description
Minimum mechanical/electrical operations without maintenance (C-O) 10,000
Mass (weight)—kg (lb)
Mass (weight)—kg (lb) with pole-mounting frame
Table 4 . Duty cycle
Type
NOVA NX-STS recloser
Table 5 . Auxiliary switch ratings
Volts
Up to 30 Vdc
Up to 250 Vac
Minimum applicable load
2
INSTALLATION AND OPERATION INSTRUCTIONS MN280103EN March 2023 www.eaton.com
15 kV
Std
630
12.5
32.5
3
12.5
12.5
2
10
Percentage of
maximum circuit
Minimum
interrupting rating
X/R ratio
15–20
4
45–55
8
90–100
17
Amperes
5 A
5 A
0.16 A at 5.0 Vdc
15 kV
27 kV
15.5
27.0
14.4
24.9
Std
Opt
Std
50
50
60
110
125
125
27 kV
Opt
Std
a
800
630
16
12.5
41.6
32.5
3
3
16
12.5
16
12.5
2
5
10
25
15 kV
15 kV
(110 kV BIL)
(125 kV BIL)
10,000
114 (252)
118 (261)
161 (354)
165 (363)
Number of
unit operations
at 12.5 kA
88
112
32
Total 232
38 kV
38.0
a
34.5
Opt
Std
60
70
150
170
38 kV
Opt
Std
a
800
630
16
12.5
41.6
32.5
3
3
16
12.5
16
12.5
5
5
25
40
27 kV
27 kV
(125 kV BIL)
(150 kV BIL)
10,000
10,000
118 (261)
123 (272)
165 (363)
170 (374)
Number of
unit operations
at 16.0 kA
88
112
32
Total 232
Opt
70
170
Opt
800
12.5
32.5
3
12.5
12.5
5
40
38 kV
(170 kV BIL)
10,000
123 (272)
170 (374)
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