NAPCO NP-P7A User Manual

R

333 Bayview Avenue

Amityville, New York 11701

For Sales and Repairs, [phone]

For Technical Service, [phone]

© NAPCO 2005

NP-P7A

7 AMP POWER SUPPLY / CHARGER

WI1416A 12/05

DESCRIPTION

The NP-P7A power supply/charger converts low voltage AC in­put into 6VDC, 12VDC or 24VDC @ 7 amps of continuous sup­ply current (see features). This general-purpose power supply
has a wide range of applications for access control, security and
CCTV system accessories that require additional power.

FEATURES

• Dip switch selectable 6VDC-12VDC-24VDC output.

• 7 amps continuous supply current at 6VDC-12VDC-24VDC*.

• Filtered and electronically regulated output.

• Built-in charger for sealed lead acid or gel type batteries.

• Maximum charge current 300mA.

• Automatic switch over to stand-by battery.

• Battery short circuit protection (circuit breaker).

• Thermal overload and short circuit protection.

• AC input and DC output LED indicators.

• Extremely compact design.

• Includes battery leads.

Board dimensions: 96.52mm L x 76.20mm W x 60mm H

Specified at 25° C ambient.

*

VOLTAGE OUTPUT/TRANSFORMER SELECTION TABLE

Output

Voltage

6VDC @ 7 amps continu­ous supply current

12VDC @ 7 amps con­tinuous supply current

24VDC @ 7 amps con­tinuous supply current

Note: Transformers with higher VA ratings may be used for all output voltages
above as long as you do not exceed 28VAC.

Dip Switch

Position

1. OFF

2. OFF

1. ON

2. OFF

1. ON

2. ON

Transformer /

Output Rating

NP-TRF28100

NP-TRF28175

NP-TRF28300

INSTALLATION INSTRUCTIONS

The NP-P7A should be installed in accordance with The National
Electrical Code and all applicable Local Regulations.

1. Mount the NP-P7A in desired location/enclosure.

2. Set DC output voltage with dip switches (refer to Voltage Output/

Transformer Selection Table).

3. Connect proper transformer to terminals marked [AC]. (Refer to
Voltage Output/Transformer Selection Table). Use 18 AWG or
larger for all power connections (Battery, DC output).

Keep power limited wiring separate from non-power limited

wiring (115VAC / 60Hz Input, Battery Wires). Minimum .25”
spacing must be provided.

4. Connect devices to be powered to terminals marked [+ DC -].

Note: It is important to measure output voltage before connecting

devices to help avoid potential damage.

5. When the use of stand-by batteries are desired, they must be lead
acid or gel type. Connect battery to terminals marked [+ BAT -] on
the unit (battery leads included). Use two (2) 12VDC batteries
connected in series for 24VDC operation.

Note: When batteries are not used, a loss of AC will result in the

loss of output voltage.

H HOT

DO NOT TOUCH

AC AC BAT- BAT+ DC- DC+

LED DIAGNOSTICS

Red

(DC)

Green

(AC)

Power Supply Status

ON ON Normal operating condition.

ON OFF Loss of AC, Stand-by battery supplying power.

OFF ON No DC output. Short circuit or thermal overload condition.

OFF OFF No DC output. Loss of AC. Discharged or no battery.

TERMINAL IDENTIFICATION

Terminal

Legend

AC Low voltage AC input (see Voltage Output/Transformer Selection Table).

For 6VDC output use 28VAC or higher with 100VA power rating or higher.
For 12VDC output use 28VAC with 175VA power rating or higher.
For 24VDC output use 28VAC with 300VA power rating or higher.
Caution: Do not apply voltages above 28 VAC (28 VAC is maximum input rating)

+ BAT -- Stand-by battery connections. Maximum charge rate 300mA.

+ DC -- 6VDC-12VDC-24VDC @ 7 amps continuous supply current.

Function/Description

APPENDIX LIST

Item Description Dimension Volume Memo

1 Instruction Sheet 120*80 1
2 Wire 18AWG 22cm 1 Red
3 Wire 18AWG 22cm 1 Black
4 Double Stick Foam Tape 60*10*7mm 4