Terminal boxes KZRV4

Purpose

Terminal boxes are intended for connection and branching of armored and unarmored cables with enclosure of round cross section with copper or aluminum cores in AC and DC circuits of electrical installations of chemical, gas, oil, coal mining and other industries.

Features

• A large number of standard dimensions for boxes allows performing optimum selection of equipment.
• Use of screw and spring terminals, cable glands of various types, drainage facilities, plugs, grounding tags and other equipment allows ensuring any box configuration required for the customer.
• External brackets ensure installation ease.

Design

The box consists of a body and a cover. Cable glands are located on side walls of the body. Terminal clamps are located inside the box on mounting plate. Fastener for cover attaching to the body from stainless steel in the form of socket head screws or bolts. Design of terminal box provides availability of external and internal grounding bolts. For box fastening braces are used.

KZ Х1 Х2 – Х3/Х4 P – (Х5/Х6) – Х7 (Х7.1)/Х7.2 – Хn х Хm (Х8) – Х9 – V1.5

KZ – terminal box

Х1 – box version:

     V – explosionproof with explosion protection level “explosionproof electrical equipment”

     RV – mine explosionproof with explosion protection level “explosionproof electrical equipment”

Х2 – enclosure standard dimension: 2, 3.1, 3.2, 3.3, 3.4, 4.1, 4.2 (not specified for boxes of KZV types)

Х3 – nominal current of clamps

Х4 – number of clamps for the specified nominal current

P – index indicating use of spring clamps. When using screw clamps, index is not indicated

Х5/Х6 – nominal current and number of used auxiliary clamps and “P” index when using spring clamps

Х7 – index indicating availability of grounding terminals or grounding buses. If grounding terminals shall be installed, index “РЕ” is indicated, if grounding buses are installed, index “РЕ bus" shall be indicated for uninsulated one, “РЕ insulated bus" shall be indicated for insulated one. If grounding terminals and busbars are not installed, index is not indicated (РЕ insulated busbar and РЕ busbar in boxes of KZRV2 and KZV type are not installed)

Х7.1 – index indicating the following:

     for grounding terminals upon availability of several cores being different by cross section area – nominal current, power clamps, with the same cross section. If grounding terminals are the same by cross section as power clamps, index shall not be indicated

      for grounding buses – number of screw clamps on bus (8 or 14)

Х7.2 – index indicating the following:

      for grounding terminals – number of terminals

      for grounding buses – number of buses and if necessary, installation side

Xn x Xm – nominal diameter of feedthrough entry for cable glands in millimeters or type of cable gland or type of plug or drainage facility and their number

Х8 – side for installation of cable gland or plug or drainage facility (А, В, С, D)

Х9 is an explosion protection marking:

     РВ ExdI – for boxes of KZRV2, KZRV3 and KZRV4 types

     РВ ExdI Mb X – for boxes of KZRV2 type

     РВ ExdI X Gb – for boxes of KZRV3 and KZRV4 types

     1ExdIIBT6(Т5/Т4) Gb X, 1ExdIIBT6(Т5/Т4) – for boxes of KZV and KZRV2 types

     1ExdIICT6(Т5/Т4) Gb X – for boxes of KZV type

V1.5 is a type of climatic version for boxes V1.5 according to GOST 15150

Explosion protection marking:

     KZV – 1ExdIICT6 (Т5/Т4)

     KZRV2 – РВ ExdI, 1ExdIICT6 (Т5/Т4)

     KZRV3 and KZRV4 – РВ ExdI, 1ExdIIBT6 (Т5/Т4)

Box material: Cindal or modified zink alloy (depending on explosion protection marking)

Degree of protection from external influences: IP66

Operation temperature: from -60 °C to +50 °C

Number of technical conditions: PINYu.685564.001TU

Box type: KZV and KZRV2. Box dimensions  170х170х133

Box type: КZRV3.1 Box dimensions 222х360х120, KZRV3.2 Box dimensions 222х360х225

Box type: КZRV3.3 Box dimensions 222х360х120, KZRV3.4 Box dimensions 222х360х225

Box type: КZRV4.1 Box dimensions 364х316х184

Box type: KZRV4.2 Box dimensions 364х316х284

Dimensions and weight

Table A

Standard connection dimensions of coupling MMRn for non-sealed metal hose of RZ-TsH type

Overall and connection dimensions for KZRV2, KZV

Overall and connection dimensions for KZRV3.X type

Overall and connection dimensions for KZRV4.1, KZRV4.2 types