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
Terminal specifications
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
Gland type
|
Diameter with
armor, mm
|
Diameter
without armor, mm
|
Gland type
|
Diameter with
armor, mm
|
Diameter
without armor, mm
|
VK-X-VEL2M16/VK-X-VEL4M16
|
-
|
3-9
|
VK-X-VEL2BМ-М16
|
6-14
|
3-9
|
VK-X-VEL2М20/VK-X-VEL4М20
|
-
|
7-14
|
VK-X-VEL2BМ-М20
|
7-17
|
4-14
|
VK-X-VEL2М25/VK-X-VEL4М25
|
-
|
11-17
|
VK-X-VEL2BМ-М25
|
11-23
|
7-17
|
VK-X-VEL2М32/VK-X-VEL4М32
|
-
|
14-23
|
VK-X-VEL2BМ-М32
|
14-30
|
10-23
|
VK-X-VEL2М40/VK-X-VEL4М40
|
-
|
19-31
|
VK-X-VEL2BМ-М40
|
19-36
|
15-31
|
VK-X-VEL2М50/VK-X-VEL4М50
|
-
|
22-42
|
VK-X-VEL2BМ-М50
|
22-47
|
19-42
|
VK-X-VEL2М63/VK-X-VEL4М63
|
-
|
29-49
|
VK-X-VEL2BМ-М63
|
29-58
|
25-49
|
VК12, VК12-G1/2"
|
-
|
7-12
|
VK-X-VEL2BТ-М16-Exd-G3/8"
|
-
|
3-9
|
VК25, VК25-G3/4"
|
-
|
10-22
|
VK-X-VEL2BТ-М20-Exd-G1/2"
|
-
|
7-14
|
VК30, VК30-G1"
|
-
|
18-29
|
VK-X-VEL2BТ-М25-Exd-G3/4"
|
-
|
11-18
|
VК42, VК42-G1 1/4"
|
-
|
24-40
|
VK-X-VEL2BТ-М32-Exd-G1"
|
-
|
14-23
|
VК53
|
-
|
30-51
|
VK-X-VEL2BТ-М40-Exd-G1 1/4"
|
-
|
19-31
|
VК66, VК66-G2 1/2"
|
-
|
50-64
|
VK-X-VEL2BТ-М50-Exd-G1 1/2"
|
-
|
22-42
|
|
VK-X-VEL2BТ-М63-Exd-G2"
|
-
|
29-49
|
Table B
Standard ratio of threads for cable gland standard sizes
Metric thread
|
Straight pipe thread
|
Inch tapered thread
|
Pipe tapered thread
|
М16х1,5
|
G3/8
|
К3/8
|
R3/8
|
М20х1,5
|
G1/2
|
К1/2
|
R1/2
|
М25х1,5
|
G3/4
|
К3/4
|
R3/4
|
М32х1,5
|
G1
|
К1
|
R1
|
М40х1,5
|
G1 1/4
|
К1 1/4
|
R1 1/4
|
М50х1,5
|
G1 1/2
|
К1 1/2
|
R1 1/2
|
М63х1,5
|
G2
|
К2
|
R2
|
Standard connection dimensions of coupling MMRn for non-sealed metal hose of RZ-TsH type
Coupling name
|
Nominal bore (of coupling and metal hose)
|
Straight pipe connecting thread
|
ММRn-15
|
15
|
G1/2
|
ММRn-20
|
20
|
G3/4
|
ММRn-25
|
25
|
G1
|
ММRn-32
|
32
|
G1 1/4
|
ММRn-40
|
40
|
G1 1/2
|
ММRn-50
|
50
|
G2
|
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
Designation
|
H, mm
|
h, mm
|
Weight, kg
|
KZRV4.1
|
184
|
127
|
15
|
KZRV4.2
|
284
|
227
|
20
|