MZD81-40.5/31.5 Indoor high-voltage grounding switchDetailed product description：

MZD81-40.5/31.5 indoor high-voltage grounding switch (hereinafter referred to as grounding switch) is an advanced level product with high technical parameter performance developed by Xi'an High Voltage Apparatus Research Institute. After comprehensive assessment, its performance meets the requirements of the national standard GB1985 "AC High Voltage Isolating Switches and Grounding Switches", suitable for 40.5kV, AC 50Hz power systems, and can be used in conjunction with KYN □ -45 and other types of high-voltage switches. It can also be used as grounding protection for high-voltage electrical equipment maintenance.

Structural characteristics:
Advanced design, indoor load switch; Simple structure, easy installation and adjustment; Having the ability to quickly separate and merge; The upper limit of air temperature around an altitude not exceeding 1000 meters plus 40 degrees Celsius; The lower limit is -10 degrees, and the earthquake intensity does not exceed 8 degrees. There is no risk of flooding, explosion, severe dust, chemical corrosion, or severe vibration in the area.

MZD81-40.5 indoor high-voltage grounding switch model meaning


Main technical parameters

project		unit	data
rated voltage		KV	twelve
maximum voltage		KV	forty
Thermal stability voltage		KA	four
Thermal stability current time		S	one hundred
Short circuit closing current		KA
Dynamic stable current		KA
Center distance between poles		mm
Rated insulation level	Rated short-time power frequency withstand voltage	KV	Extreme to ground and between poles	ninety-five
	Rated lightning impulse withstand voltage			one hundred and eighty-five

MZD81-40.5 Indoor High Voltage Grounding Switch Dimensions and Installation Dimensions

Pole spacing B	H	A (installation hole for channel steel back)
three hundred	seven hundred and ninety	3 holes -15 * 400 * 14 (diameter)
three hundred and fifty	eight hundred and ninety	3 holes -15 * 400 * 14 (diameter)
four hundred	nine hundred and ninety	3 holes -15 * 400 * 14 (diameter)

Ordering Instructions
Please specify the product model, rated voltage, thermal stability current, and phase to phase distance.
A shaft operating mechanism is required, and the right or left operating direction as shown in the above figure should be indicated with the corresponding right or left operating mechanism.
When a sensor powered display device is required, please indicate the type of display.
Users have special requirements that can be resolved through negotiation.