Eaton RVAC - Catalogue Numbering System Explained; Technical Data Specifications

Instruction Leaflet IL0102002E
Effective April 2018
Ring Main Unit Operation Instruction
5EATON CORPORATION www.eaton.com
3. Catalogue numbering system
The structure and meaning of the catalogue numbering system are shown below.
4.1. Rated technical data:
4. Technical data
RMU product code
Rated current (A) of the fuse
Rated short-time withstand current (kA)
of the load switch
Breaking current of the fuse
Voltage class (12kV/24kV)
Rated current (A) of the load switch
RVAC - □ 24 / 630 20- 80 - 31.5
K = load switch unit
T = combination unit
V = circuit breaker unit
S = bus coupling unit
B (A) = cable lifting unit
PT = voltage transforming unit
M = metering unit
No. Item Unit Data
1 Rated voltage kV 12*
2 Rated frequency Hz 50
3 Rated current
Load break switch
A
A
630
LBS+FUSE Combination unit 125
4 1min power frequency withstand voltage
Phase to earth, phase to phase
kV
kV
42
Isolating distance 48
5 Lighting impulse withstand voltage Phase to earth, phase to phase
kV
kV
75
Isolating distance 85
6 Short-time withstand current (rms)
Main circuit 4s kA
kA
20
20 Earthing switch 2s
Earthing connection circuit 2s kA 17.4
7 Short-time withstand current (peak) Main circuit kA
kA
50
50 Earthing switch
Earthing connection circuit kA 43.5
8 Rated short circuit making current (peak) Load break switch
kA 50
kA 50
Earthing switch
9 Load break switch’s rated active load breaking current
A
630
10 Load break switch’s rated closed-loop breaking current A 630
11 Load break switch’s 5% rated active load breaking current A 31.5
12 Load break switch’s rated cable charging breaking current A 10
13 Fuse’s rated short circuit breaking current kA 31.5
14 Fuse’s rated short circuit making current kA 80
15 Load break switch’s rated transfer current A 1850
16 Load break switch’s rated active load breaking operations operation 200
17 Ground fault current switching A 5 (10 operations)
18 Line and cable charging current switching under the ground fault conditions A 20 (10 operations)
19 Mechanical Endurance Load break switch operation 5000
Earthing switch operation 2000
20 Rated pressure of SF6 gas (20°C, meter pressure) MPa 0.03
21
*12kV series of RVAC just verified and applied in China (with GB certifications). Any doubt please contact us.
SF6 gas leakage rate yearly ≤ 0.1%
Data
24
50
630
100
50
60
125
145
20
20
17.4
50
50
43.5
50
50
630
630
31.5
25
31.5
80
900
100
5 (10 operations)
20 (10 operations)
5000
2000
0.03
≤ 0.1%