Knife switch series
Short Description:
The HD series and HS series knife switches (hereinafter referred to as switches) are suitable for infrequent manual connection and disconnection of circuits or as isolation switches in complete power distribution equipment with AC 50Hz, rated working voltage up to 690V, and rated working current up to 3000A.
Product details
Purpose and scope of use:
The HD series and HS series knife switches (hereinafter referred to as switches) are suitable for infrequent manual connection and disconnection of circuits or as isolation switches in complete power distribution equipment with AC 50Hz, rated working voltage up to 690V, and rated working current up to 3000A.
Among them:
1.1 The central handle type knife switch is mainly used in power stations and does not cut off circuits with current, serving as an isolation switch.
1.2 Side front lever operated switch is mainly used in front operated and front maintenance switchgear, and the operating mechanism can be installed on both sides of the cabinet.
1.3 The central front lever operating mechanism switch is mainly used in switchgear for front operation and rear maintenance, with the operating mechanism installed in the front.
1.4 Side operated handle type switch, mainly used in power boxes.
1.5 Switches equipped with arc extinguishing hoods can cut off appropriate current loads, while other series of knife switches are only used as isolation switches.
The product complies with the GB/T 14048.3 standard.
Model meaning:
Note: 1. For HD13 only, BX rotary operating mechanism can be selected for HS13, and wiring method can be selected for HD11 only;
2. When placing an order, the user must specify the type characteristics, voltage level, current level, number of poles, operating mode, and quantity of the switch;
3. Ordering example: Ordering HS13 type switch, 250 shell frame, rated current 250A, three poles, with arc extinguishing cover, rotary operation, 10 units should be written as HS13BX-250/31 10 units.
Note 1: The 2000A and 3000A shell frame with arc extinguishing cover products use copper double row structure single-phase double copper bars, while the products without arc
extinguishing cover use single copper bars. There are differences in the appearance and installation dimensions between single copper bar products and double copper bar products,
2 HD HS 13BX-2000、 The appearance and installation dimensions of the 3000/31 and 41 "double copper bar type" products are detailed in sample figure 12 and table 13.
3. The appearance and installation dimensions of the "single copper bar type" product are detailed in the corresponding chart
Main technical parameters：
Normal working and installation environment:
▶The upper limit of the surrounding air temperature shall not exceed+40℃, and the lower limit shall not be lower than -5℃.
▶The altitude of the installation site shall not exceed 2000m.
▶Humidity: The maximum temperature is 40 ℃, and the relative humidity of the air does not exceed 50%. Higher relative humidity is allowed at lower temperatures, such
▶Special measures should be taken for occasional condensation caused by temperature changes. as reaching 90% at 20 ℃.
▶The pollution level of the surrounding environment is level 3;
▶The switch should be installed vertically in a place without significant shaking, impact vibration, and no rain or snow invasion. At the same time, the installation location should be
free of explosive hazardous media, and there should be no gas or dust in the medium that can corrode metals and damage insulation.
Appearance and installation dimensions:
