Purpose
The stations are intended for remote control of cranes, beam cranes, telfers, gantry cranes, lifting platforms, industrial hoists and other lifting equipment. The stations with 2Ex d е IIC Т6 Gc/Ex tс IIIC T80°C Dс, 1Ex d e IIC T6 Gb/Ex tb IIIC T80°C Db explosion protection marking are intended for operation within explosion hazardous industrial areas, vehicles and storage facilities for products of chemical, oil-refining, gas and other branches of industry.
Features
- “Stop” mushroom push-button has locking mechanism.
- At Customer's option, they can be equipped with a bracket or handles.
- Possibility of painting into various colors.
- Stations of PVK-N-VEL series, version V1, U1, HL1, OM1, T1 are intended for operation in marine industrial environments of type IV.
Design
Station PVK is made of stainless steel. The following components are installed inside of the station: “Stop” and “Start” push-buttons with contact explosionproof block of BKV type. Clamps with BKV blocks are fastened on cover with screws to driving holders of the “Stop” push rod and holders of the “Start” push rods. Corrugated hood and O-rings are placed between holders and cover for the protection of driving devices against dust and moisture. “Stop” push-button has self-locking function in pressed position. To eliminate locking of the “Stop” push-button, it is required to urge into reset. IS-d explosion-proof light indicators. Industrial version SKL LED lamps are used as an element, which are built in explosion-proof enclosure with conductors covered with compound. VK or VK-VEL explosion-proof cable gland. During the transportation and storage, plug is installed into cable gland, which is intended for the protection of inner part of enclosure against dust and moisture. Stations are divided into versions with bracket, with two lateral handles and by casing color. Standard version adopted by default includes bracket, with two lateral handles and in grey color.
PVK-N-VELХ1К-Х2-Х3-Х4-Х5-Х6 (Х7 Х8)
PVK - explosion-proof push-button retrofit control station.
N-VEL – enclosure used for electrical devices (stainless steel).
Х1 - designation of used enclosure; according to the number of components from 4 to 8. К - crane version.
Х2 - number and type of “Stop” and “Start” push-buttons according to scheme nPх-nSх:
n - number of push-buttons; P - cylindrical “Start” push-button without locking with one closing contact and one opening contact (1NC+1NO); С - mushroom “Stop” push-button with forced locking using one closing contact and one opening contact (1NC+1NC); х - push-button color (G - green, B - blue, R - red, Bl - black etc.). For standard version “Stop” push-button has self-locking. For version without self-locking index “(w/o s/l)” shall be indicated additionally. Index is not specified in case there is no component in the order.
Х3 - explosion protection marking: 5 - 2Ex d e IIC T6 Gc/Ex tс IIIC T80°C Dс ; 14 - 1Ex d e IIC T6 Gb/Ex tb IIIC T80°C Db.
Х4 - number and color of explosion-proof light indicators by nX(U) diagram, where n - number of the required indicators, Х - their color (G - green; B - blue; R - red; Y -yellow; W - white; O - orange), U - supply voltage (24, 36, 127, 230). Index is not specified in case there is no component in the order.
Х5 - number and type of cable glands, side of their installation by d×n(Х) diagram, where d - type of glands; n - their number; Х - arrangement on the enclosure casing (А - from the left, В - from above, С - from the right, side D is not specified). When using glands of VK-H-VEL series gland material, its type and dimension shall be indicated. On default gland location is from below.
Х6 - type of climatic version and arrangement category of stations according to GOST 15150: V1, U1, HL1, ОМ1, Т1.
Х7 – version: 1 - without bracket, 2 - with bracket.
Х8 - version: 1 - without handles, 2 - with handles.
Example of order statement:
PVK-N-VEL6К-2PL-1SCh(without s/l)-1SK-14-1L(230)-1K(230)-(L-2-M25)х1(V) -HL1 (22)
Explosion-proof push-button multifunctional station of PVK-N-VEL type, for cranes, with 6 components: with two green “Start” buttons, with one black “Stop” button without locking, one red “Stop” button, with 1Ex d e IIC T6 Gb/Ex tb IIIC T80°C Db explosion protection marking, with one green LED lamp and one red with power of 230 V, with one gland VK-L-VEL 2-М25х1.5, climatic version HL, arrangement category 1.
It is allowed to use an abbreviated designation of station with complete designation in datasheet and on the station tag:
PVK-N-VEL6К-14-HL1 (22).
Explosion protection marking 1Ex d e IIC T6 Gb/Ex tb IIIC T80°C Db 2Ex d e IIC T6 Gc/Ex tс IIIC T80°C Dс
Ingress protection IР66
Nominal voltage:
AC (50 or 60 Hz) up to 380 V
DC up to 230 V
Nominal current 16 А
Ambient temperature V1 — from -60 °С to +50 °С, HL1 — from -60 °С to +40 °С , U1 — from -40 °С to +40 °С, OM1 from -60 °С to +45 °С, T1 — from -10 °С to +45 °С
Height above sea level maximum 4,300 m
Number of technical conditions TU 3424-002-00213569-2007
