Allanson AHVPS-48-1-MV User manual

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AHVPS-48-1-MV
14kV/40mA High Voltage Power Supply for Electrostatic Air Cleaner
Specifications and Operating Manual
1. General
The HV Power Supply (HVPS) must be mounted indoors, protected from weather elements, in a location
easily accessible by operating service personnel to enable inspection and clean up.
The HVPS board is conformal coated however accumulation of dust and lint may result in HV current
leaks and degraded performance especially in high humidity conditions.
Please insure that the HCV power supply compartment is well ventilated by fan to insure air circulation.
The board must be mounted at least ½” above conductive surface to prevent arcing.
Insulating pad of the size of the board is highly recommended to be installed below the board.
The HVPS board is factory adjusted to 8kV. The adjustment range is 7.2 kV to 8.5kV. If necessary the
HV can be adjusted by trim pot RV1 (labeled HV Adjust). The output current is limited to 1mA. The HV
supply output power is limited to ~ 10W. The HVPS board maintains output regulation at no load
condition however we do not recommend prolonged operation at no load.
The HVPS is equipped with universal input, AC/DC power supply and can operate from 120VAC or
220VAC 50/60HZ power lines.
The maximum current draw is 0.2 Amp from 120 VAC line and 0.1 Amp from 220VAC line.
Use these numbers to select proper wire gage as per applicable standards.
The HVPS can be also operated from 24 VDC power supply. Consult factory if 24VDC version only (no
AC power) is preferred.
2. Field wiring connections
WARNING - RISK OF ELECTRIC SHOCK

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These instructions are for qualified personnel only. To reduce the risk of electric shock, do not
perform any servicing other than contained in the instructions unless you are qualified to do so. All
wiring must be installed according to national, state and local codes.
Fig.2 HV supply connecting points
The HVPS has the following field connections available:
1. AC power input (quick disconnect terminals)
2. 24V DC power input (optional, contact factory))
3. HV Connection (+8kV and +4kV quick disconnect terminals)
4. HV Status dry contacts
5. Bicolor LED indicating HV output status
Connecting points are shown in red in Fig.1 and recommended connections to load cell are shown in
Fig.2.
AC line connections
The HV power supply requires Live, Neutral and GND connection for safe operation.

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Connect Live wire (black) to ”L” terminal and Neutral wire (white) to “N” terminal.
Connect GND wire (green) to safety Earth GND screw on the chassis.
Connect “Earth” terminal on the HV supply board to safety Earth GND screw on the chassis.
HV Connections
High voltage connection is made to quick disconnect terminals labelled +8kV and +4kV.
Connect the ionizer cable to +8kV terminal and collector cable to +4kV terminal. The HV return current
closes through the HV GND terminal.
LOAD CELL
Chassis GND
IONIZER
COLLECTOR
+8kV
+4kV
HV
GND
AC L
AC N
EARTH
GND
AC N
AC L
EARTH
GND
HV Power Supply
LED
24VDC
HV STATUS
Fig.2 Recommended connections to load cell
3. Power –up and verification
1. Connect bi color LED cable and dry contact cable.
2. Connect the load cell, turn power ON. The bicolor LED should turn ON green and dry contacts
should stay open. Using well insulated HV cable short briefly 8kV to GND and verify that bicolor
LED turns red and dry contact closes.
3. Specifications
AC power input
Voltage range: 100 to 260 VAC 50/60HZ

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Max current draw 0.2 A at 120 V, 0.1A at 220V
DC power input (optional)
Voltage range: 22 to 24V
Current draw: 0.6 A at max output power (8kV/1mA)
HV output
8kV at 1mA max
4kV at 1mA max (the sum of 8kV current and 4 kV current is limited to 1mA)
HV status (dry contact, bipolar Opto MOS relay)
Max continuous current –50mA
Operating Voltage - 60V
Isolation -1500Vrms
Contacts open –HV present
Contacts closed –HV absent (fault)
INDICATORS:
LED Green AC power on, HV is present
LED Red HV absent (fault)
Mechanical Specifications
Dimension of PCB: 4.5” W x 6.25” L x 1.5” H
Weight: 1.1 LB / 0.5kg
Agency Approvals
cURus, UL 867 Recognized, CE Mark, RoHS Compliance
Manufacturer’s marking:
P/N, Date code, serial #, at back side of PCB.