Power frequency/frequency conversion on-site explosion-proof operation column

Power frequency/frequency conversion on-site explosion-proof operation column

scope
This standard specifies the scope, reference standards, terminology, symbols, codes, product classification and basic parameters, model meanings, requirements, test methods, inspection rules, markings, packaging, transportation and storage of BZC □ series explosion-proof operating columns (hereinafter referred to as explosion-proof operating columns).

This standard is applicable to the design, manufacturing, and inspection of operating columns. Suitable for Class IIA, IIB, IIC, T1-T6 explosive gas environments (Zone 1 and Zone 2) and combustible dust environments (Zone 20, Zone 21, and Zone 22), used as a local or remote control contactor, relay, electromagnetic appliance, or for on/off and conversion control of signal and control circuits in circuits with AC voltage from 50Hz to 380V, and can directly control the starting, stopping, and reversing of small AC motors. The controller equipped with an ammeter and signal lights can also monitor and display the operation of the motor or circuit conditions.

Power frequency/frequency conversion on-site explosion-proof operation column2 Normative References

The following documents are essential for the application of this document. For all referenced documents with dates, only the version with dates is applicable to this document. For any reference document without a date, its new version (including all modification orders) applies to this document.

GB/T 2900.1-2008 Electrotechnical Terminology - Basic Terminology

GB/T 2900.18-2008 Electrotechnical Terminology - Low Voltage Electrical Appliances

GB/T 2900.35-2009 Electrical Terminology - Equipment for Explosive Environments

GB 3836.1-2000 Electrical equipment for explosive gas atmospheres Part 1: General requirements

GB 3836.2-2000 Electrical equipment for explosive gas atmospheres Part 2: Explosion proof type "d"

GB 3836.3-2000 Electrical equipment for explosive gas atmospheres Part 3: Increased safety type "e"

GB 3836.9-2006 Electrical equipment for explosive gas atmospheres Part 9: Sealing switch "m"

GB 4208-2008 Degrees of Protection Provided by Enclosures (IP Code)

GB 12476.1-2000 Electrical equipment for use in environments with combustible dust - Part 1: Electrical equipment protected by enclosures and restricted surface temperature

Section 1: Technical Requirements for Electrical Equipment

GB/T 13384-2008 General Technical Conditions for Packaging of Mechanical and Electrical Products

GB 14048.1-2006 Low voltage switchgear and control gear Part 1: General principles

GB 14048.4-2003 Low voltage switchgear and control equipment - Electromechanical contactors and motor starters

GB 14048.5-2008 Low voltage switchgear and control gear - Part 5-1: Control circuits, electrical appliances and switching elements - Electromechanical control

Circuit appliances

JB/T 3019-1999 Indoor and Outdoor Explosion proof and Anti corrosion Low voltage Electrical Appliances

3 Terminology, symbols, and codes

1.1 All terms and their definitions in this standard can be found in the relevant terms and definitions in the following standards

GB/T 2900.1-2008 Electrotechnical Terminology - Basic Terminology

GB/T 2900.18-2008 Electrotechnical Terminology - Low Voltage Electrical Appliances

GB/T 2900.35-2009 Electrical Terminology - Equipment for Explosive Environments

1.2 The symbols used in this standard are as follows

Power supply voltage before U connection

Ue rated working voltage

Ie rated working current

Ic on-off current

I connect or disconnect current

1.3 Use category codes

The main category codes used in this standard are shown in Table 1

Table 1

Typical usage examples of current types, usage category codes, and typical applications

Communication AC-3

AC-4

AC-14

The starting and operation of AC-15 squirrel cage induction motor with interruption

Starting, reverse braking, reverse operation, and inching of squirrel cage induction motors

Control small electromagnetic load (≤ 72VA)

Control electromagnetic load (>72VA)

DC DC-13 Control Electromagnetic Load

Explosion proof operating column manufacturer

4 Product Classification, Basic Parameters, and Model Meaning

1.4 Product Classification

1.4.1 Classified by explosion-proof type

a) Combination type composite (increased safety type, explosion-proof type, and pouring sealing type combination form);

b) Dust type.

1.4.2 Classified by anti-corrosion performance

a) Anti light corrosion;

b) Preventing moderate corrosion;

c) Anti heavy corrosion.

1.4.3 Classified by Place of Use

a) Indoor use;

b) Outdoor use.

1.5 Basic Parameters

The basic parameters of the operating column are shown in Tables 2-8

Table 2

use

Category Rated voltage

(V) Rated current

(A) Protection

Explosion proof mark and anti-corrosion grade

Grade: Inlet and outlet thread/cable outer diameter

(G)/(mm)

AC-3

AC-4

AC-14

AC-15 380

220 6

10

16 IP54

IP 65 exde Ⅱ BT 6

ExdeⅡCT6

ExedmⅡBT6

ExedmⅡCT6

DIP A20 TA,T6 W

WF1

WF2 G1/2～G2/φ8～φ38

M16～M63/φ8～φ38

DC-13 220

Table 3

Rated voltage of internal components in the product

(V) Rated current

(A) Explosion proof mark terminal wire diameter structure code

BAN control button 380

220 10 Exd Ⅱ CT6 2.5mm2 as shown in Table 4

Table 4

Contact type: one normally open, one normally closed, and two normally closed

DC220V two normally open

Ⅰ 1 2

3 3

Operation column head identification O I

Yellow II

Ⅱ 1 2

3 3

Table 5

Rated voltage of internal components in the product

(V) Rated current

(A) Explosion proof mark terminal wire diameter switch code

BL control switch 380

220 16 Exd Ⅱ CT6 2.5mm2 as shown in Table 6

LW5B

Table 6

switch

Code contact diagram switch

Code contact diagram

A

C P 45˚ 135˚

1－2 ╳

3－4 ╳

F

C P 45˚

→ 90˚ 135˚

←

1－2 ╳

3－4 ╳

B

C P 45˚ 135˚

1－2 ╳

3－4 ╳

G

C P 45˚ 135˚

1－2 ╳

3－4 ╳

5－6 ╳

7－8 ╳

C

C P 45˚ 90˚ 135˚

1－2 ╳

3－4 ╳

H

C P 45˚ 90˚ 135˚

1－2 ╳

3－4 ╳

5－6 ╳

7－8 ╳

D

C P 45˚

→ 90˚ 135˚

←

1－2 ╳ ╳

3－4 ╳

I

C P 0˚ 45˚ 90˚ 135˚

1－2 ╳

3－4 ╳

5－6 ╳

7－8 ╳

E

C P 0˚ 45˚ 90˚ 135˚

←

1－2 ╳

3－4 ╳ ╳

M

C P 0˚ 45˚ 90˚ 135˚

←

1－2 ╳

3－4 ╳ ╳

5-6

╳

Table 7

Rated voltage of internal components in the product

(V) Explosion proof mark: The current of the components inside the product is higher than that of the explosion-proof mark

BZD

Explosion proof indicator light is shown in Table 8 Exm Ⅱ T6 ZN-72

Explosion proof ammeter □/1A

Iculturist on startup; / 5 a exe Ⅱ

Table 8

Rated voltage DC12V DC24V DC220V AC12V AC24V AC36V AC220V AC380V

Ⅰ 1 2 3 4 5 6 7 8

Color: Red, Green, Yellow, White, Blue

Ⅱ 1 2 3 4 5

1.6 Model Meaning

The meaning of the model of the operation column is as follows

B Z C □ - A □ B□ D□ K□ □ □/□ □

WF1- Outdoor moderate corrosion protection (not required or specified)

WF2- Outdoor strong corrosion protection (not required or specified)

Inlet pipe thread specification/M thread specification

Number of inlet ports

Inlet direction D: Upper inlet

X: Offline entry line

Four units: number of switches (not installed or labeled)

Unit 3: Number of indicator lights (not installed or marked)

Unit 2: Number of ammeters (not installed or labeled)

Unit 1: Number of buttons (without installation or annotation)

8030 Plastic shell (not unspecified)

Operation column

F - Dust Explosion proof

B-IIB Explosion proof Class

C-IIC Explosion proof Class

Explosion proof master control

Unit Meaning Second Unit Meaning

A □-□ □ □/□ □ □/.... B □-□(□/□)/□(□/□)...

Structure code (see Table 4) Range ratio

Contact form code (see Table 4) Quantity (one not specified)

Quantity (one not specified) Range ratio

Structure code (see Table 4) Quantity (one not specified)

Contact form code (see Table 4) Total quantity

Quantity (one not specified) ammeter

Total number of buttons

button

Meaning of Unit 3 Meaning of Unit 4

D □-□ □□/□ □□/... K □-□ □/□ □...

Indicator light code (see Table 8) and switch function code (see Table 6)

Quantity (one not specified)

Indicator light code (see Table 8) and switch function code (see Table 6)

Quantity (one not specified)

Total number of indicator lights, total number of switches

Indicator light switch

On site explosion-proof operation column, on-site explosion-proof operation column, explosion-proof operation column manufacturer

5 Technical Requirements

1.7 The operating column shall comply with the requirements of this standard and be manufactured in accordance with the prescribed procedures and drawings and documents approved by the inspection unit. Mass production can only be carried out after obtaining the "Explosion proof Certificate" issued by the inspection unit and the "Production License" issued by the General Administration of Inspection and Quarantine of China.

The technical specifications of the components (control switches, buttons, signal lights, ammeters, etc.) composed of 1.8 operating columns should not only comply with the relevant provisions of this standard, but also with the provisions of their respective product standards. Ex components should obtain corresponding explosion-proof certificates.

1.9 Working conditions

The operating column should work normally under the following conditions:

a) Altitude not exceeding 2000 meters;

b) The ambient temperature ranges from -20 ℃ to 40 ℃;

c) The relative humidity of the surrounding air is not greater than 95% (at 25 ℃);

d) In explosive gas environments (Zone 1 and Zone 2), Class IIA, IIB, IIC T1 to T6 groups, and combustible dust environments (Zones 20, 21, and 22);

e) In places without significant shaking or impact vibration;

f) In an environment free from gases and vapors that damage metal and insulation;

g) In areas without dripping water or liquid intrusion;

h) Pollution level: Level 3;

i) Installation category: Class II, Class III.

1.10 Structural Requirements

The electrical clearance and creepage distance of the operation column shall comply with the provisions of Table 9.