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DXNA1 series High Voltage Presence Indicating System is a safety device, which is installed in high voltage switchgear or high voltage electric equipment of indoor 50Hz, rated voltage 3.6kV-40.5kV, matched with CG series sensor, via LED display to show that if the equipment possess the proper running voltage, and possess the forced electrical locking function. This device meets the technical requirements of “Technical conditions for High Voltage Presence Indicating”.
Type explanation
Mode Check hole Display mode Self check Lock function Panel(mm) Trepanning(mm) DXNA1-□/T No Lights(without switch) No No 48×96 45×92 DXNA1-□/Q Yes Lights with switch Yes Yes 48×96 45×92 DXNA1-□/Q-2J Yes Lights(without switch) Yes Yes 48×96 45×92 For example: DXNA1-12/Q denote indoor high voltage electrified display with Trepanning 45×92, keystroke, self-test function, hole for live/phase, forcing type, rated voltage 12kV.
DXNA1-3.6/T denote indoor high voltage electrified display with trepanning 45×92, no keystroke, no hole for check live/phase, hint type, rated voltage 3.6kV.
DXNA1-12/Q-2J denote indoor high voltage electrified display with Trepanning 45×92, keystroke, self-test function, hole for live/phase, forcing type, two relays Locking function, rated voltage 20kV.
Features
1、The display is fitted with ultrahigh brightness LED. When high voltage equipment with the running voltage, the LED lights to warn user that equipment is energized.
2、Long service life. The problem of short service life resulting from neon lamp is overcome, the average work time without stoppage can exceed 70000 hours.
3、Reliable running. For the forcing type, due to adopting the switched power supply with high reliability, the trouble that the simple power using capacitor or power resistance for decreasing voltage is affected by fluctuating voltage; and the trouble when the display use this simple power supply, the service life is affected by high heat productivity of equipment are eliminated.
4、The power supply of forcing type with high adaptability is suitable for both AC application and DC application, range of input voltage are up to AC85～265V DC100～300V.
5、The forcing type adopts high reliable digital detecting technology to get the maximum detecting sensitivity (the effective locking occurs at 50% or less of rated voltage) to prevent relay output misoperation.
6、The front panel of the case may be dismantled, during running, if fault occur, detecting or replacing the inner chip or LED without cutting off the high voltage and open the door of switch cabinet.
7、For user, the configuration is flexible. In practice, if user need configurating sensor by himself, selecting sensor to be matched with the voltage grade and assuring the output current shorted to earth exceed 200μA.
Matching table for product and accessory
Connecting wire
Name Specification Length ACW1-3 Special shielded conductor 3m ACW1-5 5m ACW1-7 7m Sensor
Sensor type Rated voltage Diameter(mm) Height(mm) Withstand voltage Creepage distance Bend strength Partial discharging CG106-12 Q 3.6kV～12kV 95 140 45kV/5nin ≥240mm ＞8000 ＜10 CG203-40.5 Q 35kV～40.5kV 175 320 100kV/5nin ≥810mm ＞14000 ＜8 Phase checker
Name Length of conductor ACC1-1 3m Technical data
1、Operating condition
Relative humidity≤90%
Altitude≤2500m
Operational temperature -25～+55℃
Storage temperature -35～+65℃
2、Electrical parameter
Display part：
Rated frequency：50Hz
Input impedance(each phase：210kΩ～260kΩ
Locking part：
Rated voltage：AC/DC 220V±20%
Power consumption：＜5VA
Contact capacity of relay：AC5A/250V DC5A/30V
Hint (T) type display: When phase voltage at detecting end is up to rating 15%～65%, indicator of the display begin to show the electrified condition of electrical equipment.
Forcing (Q) type display: Possess all the characteristic of T type display, when phase voltage at any monitoring end exceed rating 50%～100%, the forcing lock is in the “locking” condition (contact K is closed), “LOCK” indicator lights; with self-test function, it can test whether the display is normal or not while pressing self-test keystroke.
Note: When rated operational phase voltage is equal to or less than 15% of rated voltage, the forcing lock is in “unlocking” condition, contact K is closed. When rated operational phase voltage exceed 50% of rated voltage, the forcing lock is in “locking” condition, contact K is opened.
a. Only when high voltage A.B.C three phases have no running voltage, the lock part is unlocking (Contact K is closing), if any phase of A.B.C three-phase has running voltage, the lock part is locking reliably (Contact K is closed).
b. Forcing lock control power supply: AC/DC100～220V, ensure the lock part operation reliably; During running, if control power supply is closed, contact K has no misoperation, the locked equipment is still in locking reliably.
c. When it working, turn off key display switch, the lamp of three phases will be off. (Can be long life), but it don’t means no electrification, so lock part can be lock. Anti-interference feature: When system is running normally, the display for three-phase is in normal condition; the grounding of any phase has no affect to the normal display of other phase.
