ЗРO-UEТМ®-220
Single-pole earthing switches for outdoor installation of ZRO-UETM® series for voltage of 110 and 220 kV, thermal resistance current 25, 40 and 50 kA, corresponding to GOST Р 52726-2007 and IEC 62271-102. The single-pole earthing switches of the ZRO-UETM® series have a fixed insulator column and a grounding blade moving in a vertical plane and a closing contact located on the upper flange of the insulator.
- Single-pole earthing switches of the ZRO series are available in climatic versions in accordance with GOST 15150 and GOST 15543.1: the upper working and effective value of the ambient air temperature is + 45 ° C (+ 55 ° C), the lower operating value of the ambient air temperature is minus 60 ° C (max. altitude 1000 m)
- The earthing switch has a fixed insulator column and a grounding blade moving in a vertical plane and a closing contact located on the top flange of the insulator
- The grounding is controlled by a separate motor or manual drive (the motor drive is equipped with a manual control device). Both drives are equipped with an electromagnetic lock to prevent from improper operations.
- Drives have anti-condensate heaters that are always on. The motor drive has an additional heating, which is turned on and off automatically. Both drives can be equipped with a counter of operations on request.
- On request, grounding devices can be additionally equipped with remote control cabinets
- Products can be supplied adjusted with maximum factory readiness, ensuring simple and fast installation on both factory support structures (stands) and standard support structures
- Minimum maintenance during operation
Parameters
|
№
|
Parameters
|
ZRO-UETM®-220
|
|
1
|
Rated voltage, kV
|
220
|
|
2
|
The highest voltage, kV
|
252
|
|
3
|
Frequency Hz
|
50
|
|
4
|
Climatic version and placement category according to GOST 15150
|
UHL1 (by order Т1)
|
|
5
|
Upper operating temperature, °С
|
45 (by order 55)
|
|
6
|
Lower operating temperature, °С
|
minus 60
|
|
7
|
Rated current, A, not less
|
1000
|
|
8
|
Thermal current (Iт), кА
|
40
|
50
|
|
9
|
The largest peak through-current (electrodynamic current) (Iд), кА
|
102
|
125
|
|
10
|
Time of current flow of thermal resistance (for disconnector / earthing switch), s
|
1
|
|
11
|
Test one-minute voltage of industrial frequency relative to the earth and between the poles, kV
|
460
|
|
12
|
The same between the open contacts of the disconnector, kV
|
-
|
|
13
|
Test voltage of a lightning impulse 1.2 / 50 µs relative to the earth and between the poles, kV
|
1050
|
|
14
|
The same between the open contacts of the disconnector, kV
|
-
|
|
15
|
Permissible mechanical load on the terminals, N:
|
|
in the longitudinal direction
|
1200
|
|
in the radial direction
|
330
|
|
in the vertical direction
|
1250
|
|
16
|
Nominal supply voltage of single-phase AC or DC motor motor drive, V
|
220
|
|
17
|
Rated supply voltage of a three-phase alternating current of a motor drive motor, V
|
400
|
|
18
|
Rated voltage of single-phase AC or DC motor control circuits, V
|
220
|
|
19
|
Nominal DC voltage of electromagnetic interlocking of drives, V
|
220 или 110
|
|
20
|
Rated power of the motor drive motor, W not more
|
550
|
|
21
|
Current consumption of motor motor drive, starting / steady-state, A, not more
|
3,5/1
|
|
22
|
Power of anti-condensation heating of motor and manual drive, W
|
Не более 50
|
|
23
|
Power of the main heating of the motor drive, W
|
Не более 200
|
|
24
|
Maximum torque developed by motor drive, Nm, not less
|
1000
|
|
25
|
Operation time on or off with motor-driven main contacts, with not more than
|
12
|
|
26
|
Mechanical life (N) for main and earthing circuits
|
10000
|
|
27
|
Quantitative combination of contacts for external auxiliary motor drive circuits
|
12НО+12НЗ
|
|
28
|
Quantitative combination of contacts for external auxiliary chains of the manual drive
|
5НО*+5НЗ*
|
|
29
|
MSK 64 seismic resistance, points
|
9
|
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