| Application |
| HA Series Isolating Switch Fuse Set, HA and HP Series Isolating Switches(hereinafter referred to as switch are mainly used in the circuit of AC 50Hz(or 60Hz) and rated working voltage up to 660V. In the power supply and distribution circuit of large short-circuit current and low power factor, it can serve for master switch for manual infrequent operation, especially for mounting in the drawer type low-voltage complete equipment. |
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| Model and Definition |
The contact of HA switch is connected with fuse boby, work category AC-23, and conventional closed heating current 63-800A .Total 7 basic specifications are available.Two sets of breakpoints on HA Isolating Switch are connected with copper conductor in series (without fuse boby),main work category AC-23,and conventional free air heating current 150A-1000A. 6 basic specifications are available.
Two sets of breakpoints on HA Isolating Switch are connected with copper conductor in parallel. The circuit becomes a set of contacts, main work category AC-21, and conventional free air heating current 250A-3150A. Total 7 basic specifications are available. |
| Normal Working Conditions |
The ambient air temperature shall not exceed +40ºC. The average value shall not exceed +35ºC within 24 hours.The lowest-limit of ambient air temperature is -5ºC.
The height above sea level for installing the switch shall not exceed 2000m.
When at max.temperature of +40ºC, relative air humidity shall not exceed 50%. Higher relative humidity such as 90% at the temperature of 20ºC, is allowed under lower temperature. Special measure shall be taken against occasional condensation caused by temp.change.
The pollution grade of environment for installing switch is 3.
The switch shall be vertically installed in the place without vibration or shock. |
| Structural Features |
Fully closed structure
HH15 series switch full closed structure ensures stable performance and improvement of work reliability. Both moving and static contacts,which cannot be seen exteriorly, are mounted in a pressed housing made of new type electric engineering plastics.There are connecting terminals,fuse boby socket(HH15) or visible copper conductor HA of series connection and HP of parallel connection, operation axle sleeve, and auxiliary contact socket ,etc. mounted outside the housing. Dismantle or assembly is not allowed without permission for strict technique control for assembly.
Unique contact system
HH15 Series Switch owns a unique contact system of rolling insert type,composed of two sets of double-breakpoint each phase. In structure,rollers of different length and diameter and quantity will compose different contact system and two sets of contacts in series or parallel connection will meet the circuit of different electrical amperage and work categories.
Applying this contact system, the current will pass through four rollers and greatly reduce the electric repulsion when the contact closes.(theoretically,current is1/4,repulsion is 1/6). When the switch is in the state of closing and meanwhile large short-circuit current is passing through(under the limit condition,the current may be larger than 100KA), the roller will clamp the static contact tighter as per the reversal parallel law.
During the movement, the touching between roller and static contacts belongs to rolling and slide friction so as to effectively avoid the occurrence of fusion welding.
Independent of manpower operation
The operation mechanism of HA series switch is desingned with energy-storage spring. In spite of switch-on\off is operated with force manually, the moving speed of moving contact is independent of operational force and operation speed, ensuring stable switching performance.
Advanced actuator
The actuator is a complete set of device transmitting the operation torque to the operation mechanism axle sleeve of switch ,and the handle is the part for operator to hold.
The actuator is composed of handle mounted on the panel and the driving shaft joggled with handle.The extension shaft and the couple can only be used when the driving shaft is not long enough. In fact, it shall take consideration of inbuilt installation of switch in the complete equipment and never mind of inaptitude between the depth of switchgear and handle mounted on the panel.
The handle is mounted on the panel
The handle mechanism shall be in conformity with the requirement that the door cannot open when the switch is closed, the switch shall be in breaking position if you want to open the door, the switch cannot be closed if the door is unclosed.
The handle has a padlock pulling buckle. Lock the handle with the padlock after being pulled out. The handle cannot turn while in breaking or closing position to avoid error operation of non-operator.
The driving couple shall keep 5mm free distance to the surface in parallel with the handle mounting plane so as to avoid affecting normal work. Therefore, it is ease in installation and adjustment, and that will not cause any difficulty in operation due to imprecise adjustment.
Independent auxiliary contact
The switch may be attached with one or two auxiliary contact boxes. Each auxiliary contact box has pair of NO and a pair of NC contacts. Auxiliary contact box is insert type assembly. It is unnecessary to use screw and is easy to dismantle and assemble.
The breaking and making of both auxiliary contact and switch are synchronous. Working principle of HH15 series switch: switchingin while rotating the operation handle clockwise; switchingoff while anticlockwise |
| Technical Data Conform to:IEC947-3,GB14048.3 |
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Spec HH15
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63
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125
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160
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250
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400
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630
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Number of main poles
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3
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Rated insulation voltage(V)
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Ue=380, Uj=660;Ue=660, Uj=1000
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Rated working voltage(V)
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AC 380 660
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Conventional free air heating current(A)
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63
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125
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160
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250
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400
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630
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Rated working current/power(IC) 380V AC-23B(A)
660V AC-23B(A)
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63
63
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125
100
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160
160
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250
250
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400
315
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630
425
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Rated blowout short-circuit current 380V(kA)
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50/100
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Rated blowout short-circuit current 660V(kA)
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50
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Mechanical life(cycle)
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1700
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1400
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1400
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1400
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800
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800
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Electric life(cycle)
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300
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200
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200
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200
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200
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200
|
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Max.fuse body current(A)380V/660V
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63/63
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125/100
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160/160
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250/250
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400/315
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630/425
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Knife contact fuse tube Model
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00
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1-2
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3
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(N.m)Operation moment
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7.5
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16
|
30
|
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Auxiliary contact 380VAC-11
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5
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