Over Voltage Alarm
10 - 60 V

Application

Used to signal when a battery or voltage source is over the specified voltage
There are many signal options: Audible beeping, Red LED, open collector transistor and non-dedicated Form C contacts.

Model: HVA-2

Product similar to Photo

Features

  • Wide Voltage range 10 - 65 V
  • Fused and Transient protected
  • High Reliability
  • Simple User interface
  • Multiple signalling options available.

Basic Operation

Solar Converters Inc. Over Voltage Alarm is a simple alarm circuit that has user adjustable setpoints and warns the user when the voltage applied to it is over the specified limit. Usually used to signal over voltage of a battery.

The High Voltage Alarm monitors the incoming voltage that is powering it and it is set up to monitor goes over the setpoint. The alarm ceases when the voltage it is monitoring goes below its setpoint.

Features

  • Single unit 12, 18, 24, 36 and 48 V operation
  • Easy to set-up, setpoints have a 1/10 th. scale factor. To set 12 V, set the setpoint to 1.2V

Alarm types


LED:
A red LED on the unit is lit when the HV alarm condition is present.

Audible Beeping:
A 80 dba piezeo alarm within the unit beeps approx. once per 2 seconds to signal a HV alarm condition

Open collector transistor:
(200ma 75 V)

Optional Form C relay (HVA-2C model):
A form C relay contacts (normally open, common, and normally closed) are available to operate and signal alarm response equipment

Electrical Specifications

Nominal Voltage (V) 12 18 24 36 48
Max Output (A)
Basically rating of 1 amp relay		 1 1 1 0.5 0.25
Maximum Voltage (V) 63
Minimum Voltage (V) 10
Self Consumption (ma) 1 1 1 1 1
Quiescent (ma) 3 3 3 3 3
Relay on (ma) 8 8 8 8 8

Standard Delay on action is 0.5s

Mechanical Specifications

Weight:

  • 0.3 lbs. approx.

Size:

  • 3" x 2" x 1.5" mounted in small plastic box.

Connections

  • Power:
    #22 AWG flying leads Red = +, Black = -
  • Signal:
    # 22 AWG yellow wire for open collector output.
    This connection is floating open and pulls to Black - (internal GND) on alarm condition
  • Optional Form C relay:
    #22 AWG wire: Orange Common, Purple NO, Blue NC

    • Operating Temperature

    • -40 to 60 deg. C

    >Humidity
    • 0 - 90 % non-condensing

    Mechanical Drawing

    Click here for picture

    Note: In the interest of continuous product improvement specifications subject to change without notice.

    Order Model No:

    • HVA-2
    • HVA-2C Additional Form C relay output

    March 2004