Junction box (joint cathodiс protection) model 004

Junction box (joint cathodiс protection) (JB) (hereinafter referred to as the “box”) is designed for operation with cathodic protection rectifier like arrangements with segregated protection in order to eliminate deleterious effect of adjacent communication lines on each other. Adjustment of current in the Box can be done in steps by rearrangement of adjusting jumpers and smoothly by rotating adjustment resistor handle ).

Junction box (joint cathodiс protection) (JB) (hereinafter referred to as the “box”) is designed for operation with cathodic protection rectifier like arrangements with segregated protection in order to eliminate deleterious effect of adjacent communication lines on each other. Adjustment of current in the Box can be done in steps by rearrangement of adjusting jumpers and smoothly by rotating adjustment resistor handle ).
The Box is manufactured in two versions depending on the channel’s conductivity: with “direct” and “reverse” conductivity. The “direct” conductivity Box differs from the “reverse” conductivity Box by the opposite polarity of diode connection.

Standards compliance

The equipment is included in the register of PJSC Gazprom.

Certified in the INTERGAZCERT system.

GOST R 51164-98 “Steel main pipelines. General requirements for corrosion protection “.

Functionality

  • The box ensures joint protection of several buried structures from one cathodic protection rectifier by setting relevant resistance in module channels.
  • The box ensures potential equalization in the areas of pipeline crossing and communication cables intersection.
  • The box enables maintaining required protection potential on isolation flanges and communication cables from the cathodic protection rectifier connected to the pipeline.
  • The box enables maintaining required protection potential at the casing of the ducts under motor ways and railways from cathodic protection rectifier connected to the pipeline.
  • The module can be used as controllable polarized drain.
  • Paralleled operation of channels with similar conductivity and similar resistance in one module is allowed.
  • Paralleled operation of modules with channels with similar conductivity and similar resistance is allowed.
  • When using adjustable resistor of smooth adjustment, parallel operation of channels (modules) is not allowed.
  • If necessary, the box channels of the same conductivity can be connected in-series.

Main characteristics

Parameters Value
Number of channels (panels of the box in assembly), pcs. from 1 to 4
Parameters of one channel:

maximum pulse current of one channel:

when adjusting in a step-by-step way (A)

 

 

25 (50)

(when performing smooth adjustment maximum current of one channel shall not exceed 1 A)  
total resistance of control resistors and adjustable resistor, Ω

resistance of one control resistor, Ω

33.30 ± 3.33

0.050 ± 0.005

number of control resistors, pcs. 6
resistance of smooth adjustment adjustable resistor[1]), Ω

allowable reverse voltage between Input and Output 1 terminals, V

Grade of protection

33

500

IP34

Overall dimensions, (H x W x D) mm:

Box (number of channels – one)

Box (number of channels from 2 to 4)

 

425×216×210

425×606×210

Weight, kg, not more than:

Box (number of channels – one)

Box (number of channels from 2 to 4)

 

7

18

Operating conditions

Ambient air temperature, ºС………………………………………………………….. from – 60 to +45

Humidity (+25 ºС), %…………………………………………………………………… up to 98

Atmosphere pressure, kPa (mm Hg)……………………………………………….. 84.0 –106.7 (630 – 800)

[1]) Smooth adjustment adjustable resistor resistance can be selected from standard values.

Example of the Box identification for order placement: Box(O) 1 25 R.

Box(О)‑1‑25‑Р, where:

Box – Junction box (joint cathodiс protection) model 004 ;
(O)
– is included in identification only when reverse conductivity pattern is applied;
1 (from 1 to 4) – number of channels (Box panels assembly);
25 (25 or 50) – maximum channel current in Amperes;
R – availability of adjustable resistor for fine adjustment.

Наименование оборудования

Цена с НДС, руб./шт.

БСЗ-1-25, БСЗ(О)-1-25

38 677,34

БСЗ-2-25, БСЗ(О)-2-25

73 426,62

БСЗ-3-25, БСЗ(О)-3-25

105 456,66

БСЗ-4-25, БСЗ(О)-4-25

137 185,06

БСЗ-1-25-Р, БСЗ(О)-1-25-Р

41 397,74

БСЗ-2-25-Р, БСЗ(О)-2-25-Р

78 866,27

БСЗ-3-25-Р, БСЗ(О)-3-25-Р

113 313,92

БСЗ-4-25-Р, БСЗ(О)-4-25-Р

148 063,20

БСЗ-1-50, БСЗ(О)-1-50

65 571,38

БСЗ-2-50, БСЗ(О)-2-50

106 458,30

БСЗ-3-50, БСЗ(О)-3-50

154 572,21

БСЗ-4-50, БСЗ(О)-4-50

202 300,81

БСЗ-1-50-Р, БСЗ(О)-1-50-Р

68 771,18

БСЗ-2-50-Р, БСЗ(О)-2-50-Р

115 847,26

БСЗ-3-50-Р, БСЗ(О)-3-50-Р

160 129,45

БСЗ-4-50-Р, БСЗ(О)-4-50-Р

215 100,14

Подставка БСЗ-1, БСЗ-2-4 напольная

7 252,85

Подставка БСЗ-1, БСЗ-2-4 для установки на грунт

8 158,89

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