Country/Region china
Company Welcome Zhejiang Linbai Electric Co.,Ltd.
Categories C&K Switch
Update 2017-08-31 15:30:33
ICP License Issued by the Chinese Ministry
PV Isolation Switch
DC Load Break Switches
DC Isolators have been specifically designed to switch Direct
Current (DC) at voltage up to 1500Volts. Their robust design and ability
to switch such voltage,at rated current, mean that they are ideally suited for
the switching of photovoltaic PV systems.
Differences between AC and DC switching:
For AC current, it rises and falls in value when time runs through zero volts twice during each cycle.
This means that when breaking AC current, the electric arc created, is suppressed as the voltage falls to Zero.
When breaking DC current, the voltage is constant and current does not reduce to zero sharply, the electric arc created by breaking DC current has to be suppressed as quickly as possible in order to reduce the period of dangerous electric arc .There are two methods that can be used to achieve:
Firstly, an electric arc terminates by breaking the arc as quickly as possible.
Secondly, to increase the distance of the electric arc until it can no longer sustain itself is another approach.
The DC switch achieves ultra-rapid switching through a’Snap Action’.spring on-off, mechanism,
When the front actuator is rotated, energy is accumulated in the mechanism until a point is reached at which the internal contacts are quickly open or closed. This system will operate the switch under load within 5mS thereby to minimize the
In reduce the chances of arc prorogation, the NIS switch employs rotary contact technology. This is designed to connect and break the circuit through a revolving double break contact assembly that wipes assist moves.
The wiping action has the added advantage of keeping the contact faces clean thereby reducing the circuit
The boxed DC isolators are manufactured from polycarbonate flame plastic resulting in is an extremely strong and reliably safe switch. They are also supplied in an enclosure which gives a plenty of space for
Key Features:
IP66 rated enclosure
Enrich internal space for easier wiring
Polycarbonate is flame retardant andRoHs compliant plastic
10A,16A,20,25A,32A,40A,50A,63A,80A&100A all rated, up to 1500VDC
Unique spring loandcd switching mechanism for high speed switching (5mS max)
Knife edge and self-cleaning contacts for increasing switch life
Long arc chambers to strengthen rapid arc suppression
25m rising clamp terminals for easy wiring
All photovoltaic installations must have a DC Switch to disconnect the
DC/AC inverter from the photovoltaic panels in accordance with IEC 60947-3
PV isolation switch Images |