AG Publications Aquafax Equipment Catalogue

VOLTAGE SENSING RELAYS

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BEP VOLTAGE SENSING SWITCHES & RELAYS

DUAL OPERATION VSS (VOLTAGE SENSITIVE SWITCH) • Incorporates the same auto charging functionality as the BEP VSR. • Dual battery sensing. • Remote emergency parallel function: the 701-MDVS and 720-MDVS can be operated through a momentary button on the dash which will parallel the batteries for a preset time of 10 minutes. Once this 10 minutes has passed, if the voltage is up high enough for the voltage sensitive switch to operate, it will stay engaged. If not, it will disengage. • Engine run sensing: VSS will engage when the voltage on either the start or house battery reaches 13.7 volts. If the combined battery voltage drops below 13.0 volts and the engine is not running, after 5 seconds the contacts will open and stay open until the start or house battery voltage exceeds 13.7 volts. If the combined battery voltage drops below 12.2 volts and the engine is running, after 5 minutes the contacts will open and stay open until the start or house battery voltage exceeds 13.7 volts. If voltage drops below 13 volts and stays above12.2 volts on either start or house battery while engine is running, the VSS will stay engaged. • Manual override option. • The advantage of using a high current VSS is that it will cover your dual battery charging requirements and emergency parallel operation in one unit.

NEW Optical sensor benefits now available for the motor driven VSS, (720-MDVSO and 720-MDVSO-24V Only). • Can be used to switch in positive or negative lines. • Low stand by current draw (7mA) (zero if aux control switch used, see instruction sheet). • Main contacts isolated from control circuit allowing operation via another battery source. 701-MDVS 720-MDVS

DIMENSIONS L X W X H

VOLTS (V)

RATING (A)

ENGAGES (V DC)

DISENGAGES (V DC)

PART NO.

MODEL

MM

IN

8-90050 8-90051 8-90056

701-MDVS

68 X 68 X 101

2.7 X 2.7 X 4

12

275

13.7

12.2 - 13.22

557

701-MDVS-24V

68 X 68 X 101

2.7 X 2.7 X 4

24

275

27.4

24.4 - 26.00

720-MDVSO

102 X 102 X 110

4 X 4 X 4.3

12

500

13.7

12.2 - 13.00

DIGITAL VOLTAGE SENSING RELAY (DVSR) The new Digital VSR (Voltage Sensing Relay) combines all of the market proven features of the existing VSR with a host of new functionality. The Voltage Sensing Relay (VSR) allows the charging of a second battery from a single charging source. When the voltage on the start battery rises to a level indicating a 60% charge, the VSR engages allowing the 2nd battery to charge. When charging stops and voltage falls the VSR will disengage isolating the two batteries from each other. Dual sensing functionality enables the sensing of two battery banks allowing two way charging. • Safely charge two or more independent battery banks from one charge source (alternator, battery charger…). • Charges engine starting batteries before combining auxiliary bank for charging. • Protects start batteries from becoming flattened by domestic loads. • Isolates electronics from harmful electrical surges from starter and winch motors. • Simple to install 3 wire connection, leaves alternator wiring intact. • No volt drop vs. diode isolators. • Ignition protected • Surface or panel mountable. • Replaces previous models 710-125A.

SURGE PROTECTION

NEW Digital enhancements: • Remote status LED output • Remote sensing circuitry for isolated control from secondary supply. • Zero stand by current draw when remote sensing circuit

SURGE PROTECTION MODULE Protect your electronics from becoming damaged by harmful high voltage spikes. When fitted to the battery supply these modules look for sudden increases in voltage then switch into protection mode to absorb and suppress the high energy spike.

utilized with switch fitted (switch in open position). • Multi voltage, auto selects between 12 and 24V DC operation.

12V DC Part No. 8-90068 24V DC Part No. 8-90069

DIMENSIONS L X W X H

RATING CONTINOUS (A)

VOLTS (V)

ENGAGES (V DC)

DISENGAGES (V DC)

PART NO.

MODEL

MM

IN

8-90060

710 - 140A

69 X 69 X 50

2.75 X 2.75 X 2

12/24

140/140

13.2/26.4

12.7/25.4