RLND 10 appeared on the domestic market of electrical devices not so long ago. But this did not stop them from gaining excellent popularity and the trust of many users.
What is the secret of such good fame for this electrical product? Everything is very simple!
RLND 10 managed to distinguish itself with excellent production quality, long service life and reliable operation. In addition, their cost remains very optimal and low compared to many other expensive models.
RVO, RVK, RVR, RVP, RV, RVZ, RVF, RVFZ, RLND, RLNDS, RLK
They are used to create a visible break in the power line, separating equipment that is out of service from live parts that are energized. This is necessary, for example, when taking equipment out for repairs in order to carry out work safely. Disconnectors do not have arc extinguishing devices and therefore are intended primarily for switching on and off electrical circuits under voltage or without voltage. Devices are distinguished by:
- type of installation: - for indoor installation - for outdoor installation
- voltage (6, 10 kV)
- current (400, 630A and more)
- execution: - single-pole; - three-pole; - three-pole with grounding blades
Application area
The RLC disconnector is necessary for carrying out preventive inspections of the electrical circuit and performing repair work on those elements that are energized.
With their help, the risk for the specialist is minimized. This is an integral part of any power line, which allows you to carry out the necessary work on de-energized areas under voltage, with idle current lines and grounding.
The maximum current load on the RLC disconnector is determined by the specific model. This must be taken into account when choosing a device.
To increase the level of security, you can additionally use auto-lock. This system will prevent spontaneous activation of the disconnector, and will also prevent prohibited actions at the site.
For indoor installation
ARE USED:
- in order to visualize the connection and disconnection, and the actual break of previously de-energized sections of the electrical circuit, for the safe repair of equipment built into the power transmission line network;
- to break electrical circuits operating under low voltage, where the possibility of a discharge arc between the contact knives is excluded;
- for grounding previously disconnected areas when using stationary grounding conductors.
The devices are designed to operate in alternating current networks with a frequency of 50 and 60 Hz and voltages of 6 and 10 kV.
SINGLE-POLE - type RVO, RVK, RVR, RVP R
— disconnector;
B
- for indoor installation;
O
- single-pole;
P
- vertical chopping type;
K
- box-section current-carrying system;
P
- translational movement of the main knives. Available for currents up to 600 A. The numbers in the name mean voltage (kV) and current (A). The knife rotates through an angle of up to 100 and is held in the off position only by its own weight. The angle of rotation of the knife is fixed by a limiter. For the same series at 1000 A, in order to reduce the effort of pulling out the knife, an intermediate shaft was introduced.
| Single pole | ||||||
| Brand | Durability, kA | Dimensions, mm | Weight, kg | |||
| Electrodynamic (amplitude) | Thermal | Length | Width | Height | ||
| RVO-10/400 | 41 | 16 | 468 | 72 | 156/429 | 5,9 |
| RVO-10/630 | 52 | 20 | 468 | 72 | 160/433 | 6,3 |
| RV O-10/1000 | 100 | 40 | 480 | 92 | 163/440 | 11 |
| RLVOM-10/1000 | 100 | 40 | 486 | 380 | 199/460 | 14…17 |
| RV K-10/2000 | 85 | 31,5 | 560 | 350 | 280/500 | 26 |
| RVR(Z)-10/2500 | 125 | 45 | 1050 | 470 | 318/545 | 65 |
| RVR(Z)-10/4000 | 200 | 71 | 610/1050 | 470 | 318/545 | 65 |
| RVR(3)-20/6300 | 260 | 100 | 910/1400 | 700 | 680/1050 | 222 |
| RVR(3)-20/8000 | 320 | 125 | 1400 | 700 | 680/1050 | 238 |
| RVP(3)-20/12500 | 490 | 180 | 1600 | 820 | 857 | 625 |
| RV K-3 5/2000 | 115 | 45 | 980 | 700 | 550/1010 | 74 |
THREE-POLE - types RV, RVZ, RVF and RVFZ are three current conductors mounted on one frame with a common shaft, rods and drive lever.
RVFZ - symbol: F - figured; Z - with grounding knives.
The conductor consists of two fixed contacts and a movable knife connecting them. The knife is held in the on position by rods and a shaft. By rotating the shaft through a PR-P type drive (front connection) or PR type (10 - rear connection; 11 - front connection), the movable knives are turned on or off. The devices are installed in alternating current networks with a frequency of 50 Hz and voltages of 6 and 10 kV.
| Brand | Variant of arrangement of grounding knives | Option for bushing arrangement | Overall dimensions, mm, no more | Weight, kg, no more | ||
| L | H | B | ||||
| RV 10/1000 U3 | — | I var. – without bushings. | 654 | 199 | 472 | 28 |
| RV 10/630 U3 | 182 | 464 | 25 | |||
| RVZ 10/1000 I U3 | I var. – grounding blades on the side of detachable contacts RVS | I var. – without bushings. | 704 | 197 | 622 | 30 |
| RVZ 10/630 I U3 | 186 | 589 | 28 | |||
| RVZ 10/1000 II U3 | II var. – grounding blades on the side of the hinge contacts | I var. – without bushings. | 197 | 622 | 30 | |
| RVZ 10/630 II U3 | 186 | 589 | 28 | |||
| RVZ 10/1000 III U3 | III var. – grounding blades on both sides | I var. – without bushings. | 744 | 197 | 745 | 33 |
| RVZ 10/630 III U3 | 186 | 713 | 31 | |||
| RVF 10/1000 II U3 | — | II var. – bushings on the side of the hinge contacts. | 722 | 202 | 437 | 34 |
| RVF 10/630 II U3 | 32 | |||||
| RVF 10/1000 III U3 | — | III var. – bushings on the detachable contact side. | 437 | 34 | ||
| RVF 10/630 III U3 | 32 | |||||
| RVF 10/1000 IV U3 | — | IV var. – bushings on both sides | 406 | 39 | ||
| RVF 10/630 IV U3 | 37 | |||||
| R V F Z 10/1000 I-II U3 | I var. – grounding blades on the side of the detachable contacts | II var. – bushings on the side of the hinge contacts. | 199 | 649 | 39 | |
| R V F Z 10/630 I-II U3 | 35 | |||||
| R V F Z 10/1000 II-II U3 | II var. – grounding blades on the side of the hinge contacts | II var. – bushings on the side of the hinge contacts. | 39 | |||
| R V F Z 10/630 II-II U3 | 35 | |||||
Option for the location of grounding knives: I - on the side of the detachable contacts;
II - from the side of the hinge contacts; III - on both sides. Option for arrangement of bushings: II - on the side of the hinge contacts; III - from the side of detachable contacts; IV - on both sides
Advantages
The universal linear two-column disconnector for outdoor installation RLND is suitable for operation in any climatic zone of the Russian Federation. Switching devices do not require frequent maintenance and demonstrate reliable operation.
The simple design of the device facilitates its transportation, storage, installation and operation. The certificate of conformity confirms the exemplary quality of the product and the possibility of its use throughout Russia. The disconnectors are equipped with current conductors that provide stable electrical resistance for many years.
For outdoor installation
External, man-made environmental influences, natural and climatic operating conditions, impose certain requirements on the design of the disconnector.
The main requirements include: the presence of sufficient insulation in a polluted and humid environment, and mechanical strength when contact pairs become icing, often using built-in ice-breaking devices. Explanation of the abbreviation in brand designations:
- D - two-column;
- 3 - with grounding knives;
- L - linear;
- N - outdoor installation;
- O - single-pole;
- R - disconnector.
Outdoor horizontal rotary type disconnectors of the R L N D series are used:
- for the purpose of visualizing connection/disconnection, and the actual rupture of previously de-energized sections of the electrical circuit, for the safety of work in networks of high-voltage power lines;
- to break electrical circuits operating under low voltage, where the possibility of a discharge arc between the contact knives is excluded;
- for grounding previously disconnected areas when using stationary grounding conductors.
For these types, the rated voltage is 10 kV, but if necessary, RLND disconnectors can operate up to 750 kV.
Structurally, the RLND has one or two stationary grounding conductors. The connection between the main and grounding circuits is opened through lamella contacts, the pressure in which is created by springs.
Control is carried out by manual drives type PRN(Z)-10UHL1 or drives type PR-2BUHL1
Characteristics of disconnectors rlnd
| Name and type | Characteristics | |||
| Thermal resistance current, kA | Limit through current, kA | Weight, kg | Accessory drive, type | |
| with a movable contact terminal on a rotary column without grounding conductors | ||||
| R L N D-10B/630 UHL1 | 12,5 | 31,5 | 31 | PRG-2UHL1 |
| R L N D-10B/315N T1 | 10 | 25 | 30 | PRG-2T1 |
| R L N D-10B/630N T1 | 12,5 | 31,5 | 31 | — // — |
| R L N D-10B/400N UHL1 | 10 | 25 | 35 | PRG-2UHL1 |
| R L N D-10.IV/400N UHL1 | 10 | 25 | 28 | — // — |
| with a movable contact terminal on the rotary column and with one grounding switch on the side of the rotary column | ||||
| R L N D.1 -10B/315N T1 | 10 | 25 | 39 | PRG-2BT1 |
| R L N D.1 -10B/630N T1 | 12,5 | 31,5 | 40 | PRG-2BT1 |
| R L N D.1 -10B/400N UHL1 | 10 | 25 | 39 | PRG-2BUHL1 |
| R L N D.1 -10.IV/400N UHL1 | 10 | 25 | 36 | — // — |
| R L N D.1 -10B/630 UHL1 | 12,5 | 31,5 | 40 | — // — |
| with a movable contact terminal on a rotating column and with two grounding switches | ||||
| R L N D.2-10B/400N UHL1 | 10 | 25 | 43 | PRG-2BUHL1 |
| R L N D.2-10. IV/400N UHL1 | 10 | 25 | 40 | — // — |
| R L N D.2-10B/630 UHL1 | 12,5 | 31,5 | 50 | — // — |
Outdoor horizontal-rotating type R L N D-I series are used for:
- visualization of connection and disconnection, and real rupture of previously de-energized sections of the electrical circuit, for the safe repair of equipment built into the power transmission line network;
- breaking electrical circuits operating under low voltage, where the possibility of a discharge arc between the contact knives is excluded;
- grounding of previously disconnected areas when using stationary grounding conductors.
Structurally, the product has one or two stationary grounding conductors.
The connection between the main and grounding circuits is opened through lamella contacts, the pressure in which is created by springs. R L N D-I-10B is made on porcelain insulators, R L N D-I-10.II and R L N D-I-10-.IV are made on polymer insulators (with tracking-erosion-resistant coating) having high discharge characteristics in dirty and wet conditions and mechanical characteristics that ensure reliable operation under seismic impacts up to 9 points on the MSK-64 scale.
RLND-I at 200 A are controlled by a manual drive PRNZ-10UHL1, and at 400 A - by a manual drive type PRNZ-10UHL1 or a block manual drive PR-2BUHL1. The drives have a mechanical interlock between the main knives and the grounding switches.
| Name and type | Characteristics | |||
| Thermal resistance current, kA | Limit through current, kA | Weight, kg | Accessory drive, type | |
| with a fixed contact terminal on a rotating column without grounding conductors | ||||
| R L N D- I-10B/400N UHL1 | 10 | 25 | 33 | PRG-2UHL1 |
| R L N D- I-10.IV/400N UHL1 | 10 | 25 | 23 | — // — |
| R L N D- I-10B/ 200 UHL1 | 6,3 | 15,75 | 30 | PRN-10MU1 |
| R L N D- I-10.IV/ 200 UHL1 | 6,3 | 15,75 | 20 | — // — |
| R L N D- I-10/ 200 UHL1 | 6,3 | 15,75 | 30 | — // — |
| R L N D- I-10/ 400 UHL1 | 10 | 25 | 30 | PRG-2UHL1 |
| with a fixed contact terminal on the rotary column and with one grounding switch on the side of the rotary column | ||||
| R L N D- I.1-10B/400N UHL1 | 10 | 25 | 39 | PRG-2BUHL1 |
| R L N D- I.1-10.IV/400N UHL1 | 10 | 25 | 34 | — // — |
| R L N D- I.1-10B/ 200 UHL1 | 6,3 | 15,75 | 43 | PRN3-10UHL1 |
| R L N D- I.1-10.IV/ 200 UHL1 | 6,3 | 15,75 | 34 | — // — |
| R L N D- I.1-10/ 200 UHL1 | 6,3 | 15,75 | 34 | — // — |
| R L N D- I.1-10/400 UHL1 | 10 | 25 | 39 | PRG-2BUHL1 |
| with a fixed contact terminal on a rotating column and with two grounding switches | ||||
| R L N D- I.2-10B/400N UHL1 | 10 | 25 | 39 | PRG-2BUHL1 |
| R L N D- I.2-10. IV/400N UHL1 | 10 | 25 | 38 | — // — |
| R L N D- I.2-1 0B/200 UHL1 | 6,3 | 15,75 | 43 | PRNZ-10UHL1 |
| R L N D- I.2-1 0. IV/200 UHL1 | 6,3 | 15,75 | 38 | — // — |
| R L N D- I.2-1 0/200 UHL1 | 6,3 | 15,75 | 38 | — // — |
| R L N D- I.2-1 0/400 UHL1 | 10 | 25 | 39 | PRG-2BUHL1 |
Exhaust fuses-disconnectors PRVT type
Fuse-disconnectors of the PRVT-10 series are designed to protect power transformers and distribution systems from short circuits and extreme overload currents, as well as to switch on and off sections of the electrical circuit (with an isolated or grounded neutral) with the load disconnected using an operating rod.
The fuse-disconnector is made in the form of a single-pole device consisting of a porcelain insulator, at the ends of which a contact system is attached to brackets for installing a replaceable element with a fuse-link.
In case of overload and short circuit currents, the fuse link burns out, the holder of the replaceable fuse-disconnector element automatically tilts back, thereby creating a visible gap. Thus, the device performs simultaneous functions of a protective device and a disconnector.
Replaceable elements are made with two types of time-current characteristics: type “K” - fast; type “T” – slow, which allows for selectivity of protection.
The delivery set of PRVT for 3 poles includes 19 replaceable elements and 1 spare cartridge.
The design of fuse-disconnectors ensures:
- reliable fixation of the knife cartridge in the upper contact in the on position and quick tilting of the cartridge when disconnected;
- the ability to quickly and conveniently replace the element being replaced;
- reusable cartridge.
The switching life of the cartridge is at least 5 shutdowns with a total short circuit current of 6.3 kA, and reload currents are up to several dozen shutdowns.
Removal and installation of the holder of the replaced element is carried out manually using a special operational insulating rod. The rod allows you to operate in wet weather and in the rain at wind speeds of up to 15 m/s. The design of the fuse-disconnectors eliminates spontaneous operations without an operating rod. There are 2 types of rods available to choose from.
After disconnecting the line, the knife-chuck can be removed and stored by the master, which prevents unauthorized activation of the PRVT by unauthorized persons, even in the presence of a ladder.
To ensure safety during maintenance and repair work, the PRVT design is equipped with a special bolt (pin) for applying a standard portable grounding to it (with the fuses disconnected).
The poles of the fuse-disconnectors are fastened to the support on a traverse (by the bracket in the middle part of the insulator).
PRVT-10 fuse-disconnectors can be supplied with sets of mounting parts for installation on various types of VL-10 supports, as well as for upgrading existing 10/0.4 kV cabinet-type substations to a power of 25–250 kVA with PKT-101 and PKT fuses –102, directly at the site of operation of the package transformer substation.
Technical characteristics of PRVT disconnectors
| Parameter | Meaning |
| Rated voltage, kV | 10 |
| Highest operating voltage, kV | 12 |
| Rated current, A | 5-80 |
| Rated base current, A | 200 |
| Rated breaking current, kA | 6,3 |
| Leakage distance of external insulation, m | 0,32 |
| Permissible tension of wires in the horizontal direction, in the plane of the pole, N, no more | 250 |
| Weight, kg | 27 |
Select fuse-disconnector PRVT…
Remote control unit VBU
The remote control unit is designed to control motor drives of disconnectors at ambient temperatures from -60°C to +40°C.
Inside the case on the control panel there are “On-Off” control buttons for each of the three controlled drives, “Local-Remote” operating mode switches and a lighting lamp that turns on when the door is opened.
The control panel can be rotated 180 degrees. In working position it is fixed with a magnetic latch.
Behind the control panel there is a terminal row and an automatic heating switch, which includes the lighting and heating circuits. Access to the inside of the drive during installation and commissioning is carried out after unlocking the lock with a special key.
The control unit housing is made of stainless steel. There are aerators at the bottom of the housing and in its upper part.
