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erfect Switch Power-Gate single and dual rectifier solid state battery isolators
Perfect Switch Power-Gate solid state Bi-Directional DC Relays used as a Battery Management System (BMS) for lithium titanate oxide batteries
Perfect Switch Power-Gate solid state Bi-Directional DC Relays used as a Battery Management System (BMS) for lithium titanate oxide batteries (LTO)
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Perfect Switch "POWER-GATE" Bi-Directional DC Relays are the Best, Most Efficient and Most Powerful Solid State Products on the Market.
Available For Industry,
Marine, RV, Cars, Trucks, Aircraft & Military Applications
We glady accept Visa credit cards over the phone, online and in person
We glady accept MasterCard credit cards over the phone, online and in person
All Prices $USD. Contact Us for Shipping/ Freight Costs.
Quantity Discounts Available.
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POWER-GATE PRODUCT PAGES
 
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Perfect Switch Power-Gate solid state Bi-Directional DC Relays used as a Battery Management System (BMS) for lithium titanate oxide batteries
Perfect Switch LTO Battery Management System Bi-Directional Relay.

Quick Specs:
Bi-Directional Relays

Current Rating: 100 to 600 Amps
Operating Voltage: 6.5 to 36 VDC
(12 Volt, 24 Volt and 36 Volt models available)
Voltage Drop at Max Current: 50mV
Temperature Range: -40 to +105 C
Weight: 14.4 ounces
Dimensions: 8.5" x 6.5" x 1.8"

Pricing: As there are many custom programmable features and options as well as different power ratings, these are custom priced from $850.00 USD. The 12 Volt 400 Amp model shown in the photo was priced at $1,450.00 USD.

ADDITIONAL INFORMATION Autonomous devices fitted with a master on/off switch for safe installation and master reset purposes.

Electronic assembly inserted into ABS encapsulation shell then backfilled with black, flame retardent, filled epoxy specifically developed for the potting of electronic modules.

Four integrated mounting holes pre-drilled to .250".

Mounting posts, 3/8" x .750" with provided brass washers and nylon insert 3/8" nuts. Mounting torque not to exceed 75 inch-pounds or 8.5 newton-meters.

Lithium Titanate Oxide Battery (LTO) BMS: Bi-Directional DC Relay (Gen 3.0)

This is a new device developed by Pinnacle Innovations and built by the engineers at Perfect Switch. The basic use of the device is to provide both over-charge and over-discharge protection to a custom made Lithium Titanate Oxide (LTO) battery system with 13.8 Volts nominal and 880 Amp hours capacity that will be installed in an all-season RV trailer that will be used in temperatures as low as -40 Celsius. The LTO battery cells are unique in that they can be easily used for cold temperature applications like this - eliminating the need for battery heaters that would be required for lead-acid, AGM or conventional LiFePO4 (lithium-ion) batteries. The beauty of this product is that it is very simple to install within a sealed battery enclosure or in our case, inside the trailer where it is accessible in case the Breaker Switch trips. In addition, we are using active cell balancer boards for each of the 27 packs of 6 LTO cells wired in Series.

On the surface of the Perfect Switch device is a push button breaker that will trip if there is an over-current event. It can also be used as a master on/ off switch. In addition, this device comes with a 3 wire harness (as well as external LED wire harness if you plan to connect external indicator LEDs). We have connected the small orange wire of our BMS device to the battery pack's + 13.8 Volts and run it to a remote toggle switch so that we can remotely turn the device on/ off (orange wire is the "Excite" or "Trigger" wire that powers up the device). The other two small wires (blue or brown) connect to another SPST toggle switch which controls the override features. With this switch on/ connected, our Voltage protections are active. If we turn this switch off it disables things like the over-Voltage charging protection. The external single pull, single throw toggle switches are not included - we can provide a variety of high quality marine rated and waterproof toggle switches at minimal extra cost.

On the device itself, we wire all loads and charging devices to Terminal 2. Terminal 1 connects to our battery system positive bus bar. NOTE: We may be able to offer a "Twin Path" BMS whereby both the charge and discharge paths are separated so that if a charging error/ event occurs you can still power loads and vice versa.

Below is the programming/ specifications that we used:

  • Stand alone Bi-directional Solid State Relay
  • Large enclosure
  • Generation 4.1
  • 12 Volt system
  • All LEDs active - we will also connect/ install remote LEDs
  • On-board and active-high remote main trigger
  • Active-low non-isolated override trigger
  • Specification code 1053A denoting the following:
    • UnderVoltage Shutdown: 9.6 Volts
    • UnderVoltage Shutdown delay: 30 seconds
    • UnderVoltage Reset: 10.5 Volts
    • UnderVoltage Reset delay: 5 seconds, Terminal 1 only
    • OverVoltage Shutdown: 16.0 Volts
    • OverVoltage Shutdown Delay: 1 second
    • OverVoltage Reset: 15.9 Volts
    • OverVoltage Reset delay: 5 seconds Terminals 1 and 2
    • Sleep Mode Enabled - Immediate sleep mode entry upon UnderVoltage lockout
    • Circuit Breaker Shutdown: 500 Amps
    • Circuit Breaker Shutdown delay: 2 seconds
    • Circuit Breaker in one direction (battery to load)
    • Circuit Breaker Reset: Toggle Button Switch

We are able to offer this "BMS" style product for LTO battery Voltages up to 48 Volts. Learn more general information about the POWER-GATE bi-directional solid state relays on the Bi-Directional Relay Main Page.

Devices can be customized for opto-isolation, latching, external Vcc, external status, logic feedback, and other various features. If you need to switch from a source to a load, and mechanical relays won't cut it, POWER-GATE may be your solution.

A solid state Bi-Directional Relay can be used to switch power between two batteries. Current can flow in both directions much like a mechanical relay. Reprogrammable logic causes the device to respond to differing Voltage and timing cues, safeguarding batteries from deep discharge, or monitoring Voltage, current, and termperature for various internal or external battery management applications.

Pricing: Please Contact Us for Pricing of these Custom Bi-Directional Relays.
Questions/ Want to place an order? Call us at 604-510-0800 or Email Us

Important Perfect Switch POWER-GATE Device Installation Information
NOTE: The type of fuse shown below is only for use in applications up to 300 Amps. For higher Amp applications use either Class T or ANL Fuses.
Click on the images for detail photos
Click on the image for a larger POWER-GATE Installation tip image
Click on the image for a larger POWER-GATE Installation tip image
Click on the image for a larger POWER-GATE Installation tip image
We recommend the use of Blue Sea Systems "Terminal Block Fuse Sets" on the Perfect Switch stud terminals.
CORRECT INSTALLATION of Terminal Block Fuse Sets. Be certain to install Cable Terminal Isolators to Prevent Arcing.
INCORRECT INSTALLATION of Terminal Block Fuse Sets. Be certain to install Cable Terminal Isolators to Prevent Arcing.
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Perfect Switch Bi-Directional Relay Information

POWER-GATE solid state Bi-Directional relays are designed to switch DC current up to 600 Amps, and allow current to flow bi-directionally. An integrated microprocessor provides smart control including traditional Low Voltage Disconnect functionality to safeguard batteries. The device can be customized for OEM's serving various internal and external battery management applications. Often used in fleet applications, the device can be placed between a starting and auxiliary battery allowing the onboard logic to decide when to separate the batteries to insure vehicle start-up. A manual override trigger can force the device to join batteries together for self-jumping applications.

Bi-Directional relays can behave in full automatic mode, respond to manual triggers, or both. Its on-board logic, low on-resistance, and high current switching make it a compelling choice for systems engineers and fleet operators alike.
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PERFECT SWITCH PRODUCTS
 

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ISOLATOR DEVICES/ RECTIFIERS

POWER-GATE Battery Isolators are industry leading, high performance, one-way electrical valves. They are commonly deployed in multi-battery applications where independent discharge or battery separation is required. Never confuse conventional battery isolators with POWER-GATE battery isolators. POWER-GATE devices enjoy ultra-low on-resistance and require no heat sinking and no airflow at currents up to 600 Amps.

Power-Gate rectifiers are the most efficient and reliable available

Recommended by EnerSys (manufacturer of Odyssey, Hawker, Loadhog, Powersafe, General, NP, Ironclad, Genesis, Heritage, and Varta batteries), and utilized in both military and civilian applications, POWER-GATE Battery Discharge Controllers insure that power gets to where it's needed without the excessive heat and Voltage drop typified by more common, lesser performing silicon and Schottky devices. Unlike conventional silicon and Schottky isolators, POWER-GATE's achieve sub-100 micro-ohm performance, even as the currents climb through 600 Amps; that's over 1,000% more efficient than traditional silicon and Schottky technology. With heat being the primary killer of electronics, engineering heat OUT of the product yields unparalleled reliability.

Questions/ Want to place an order? Call us at 604-510-0800 or Email Us

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