What are the characteristics of RS485 communication cable different from RS232 and RS485

Rs485 communication line is different from rs232. What are the characteristics of rs485/ brand

Product name: zryjv, zryjv22, zryjv32 flame retardant cable

Model: zryjv, zryjv22,zryjv32,zryjv42

Product standard of zryjv flame retardant cable:

Flame retardant properties shall comply with GB/T19666-2005, and other properties shall be equivalent to the corresponding non flame retardant products, ministerial standards or industry standards of the product.

For example, the flame-retardant power cable is equivalent to GB/T12706.1-2008. The flame-retardant control cable is equivalent to GB/T9330-2008

Use of flame retardant wires and cables:

This product is suitable for use in power stations, subways, high-rise buildings, petroleum, chemical, power plants, tunnels and other places with flame retardant requirements.

Use characteristics of flame retardant wires and cables:

1. The general use characteristics of cables, such as rated voltage, high and long-term allowable working temperature, bending radius, laying temperature, etc., shall be non flame retardant.

Products, ministerial standards or industry standards.

2. The flame retardant characteristics can be divided into four categories: a, b, c and d according to the flame retardant category:

a: Zc flame-retardant cable is used in general flame-retardant places requiring to pass iec60332-3-24c;

b: Zb flame-retardant cable is used in flame-retardant places requiring to pass iec60332-3-23b;
Rs485 communication line is different from rs232. What are the characteristics of rs485/ brand

c: Za flame-retardant cable is used in demanding flame-retardant places requiring to pass iec60332-3-22a;

Model and specification of flame retardant wires and cables:

1. Product code: z - flame retardant; A -- Conform to Class a flame retardant requirements; B -- Conform to Class b flame retardant requirements; C -- Conform to Class C flame retardant requirements; D -- Conform to Class d flame retardant requirements.

Other codes adopt the naming codes of corresponding non flame retardant products.

For example, copper core XLPE insulated PVC sheathed Class A flame-retardant power cable is expressed as za-yjv.

PVC insulated flame retardant cable Model name:

Model name
Copper core aluminum core
Zryjv zryjlv cross-linked PVC insulated PVC sheathed flame-retardant power cable
Zryjv22 zryjlv22 cross-linked PVC insulated PVC sheathed flame-retardant power cable
Zryjv32 zryjlv32 cross-linked PVC insulated PVC sheathed flame-retardant power cable
Zryjv42 zryjlv42 cross-linked PVC insulated PVC sheathed flame-retardant power cable
Rs485 communication line is different from rs232. What are the characteristics of rs485/ brand