Electra R

PLC based digital control with 8-inch color TFT touchscreen operator interface.

Functions

• Control power source and voltage level detection
• Malfunction detection and protection
• Direct access (keypad) load control
• Alternate mimic panel load control
• Basic automation of load control
• Field adjustable exhaust temperature limits with temperature display
• Built-in control from customer supplied computer

Instrumentation

Digital power transducer to digital controller and meter displays on touchscreen:

• 3-phase voltage (each, L-L)
• 3-phase current (each line)
• Frequency
• KW

Data Acquisition

• Captures and records all electrical values
• Start recording/stop recording screen buttons
• One second sample rate
• Exports text file to detachable flash drive which plugs into USB port

Outputs

MODBUS (standard) or BacNet (optional):

• Load applied
• Each electrical value as above

• Simplex Load Banks utilize UL rated, industry leading "Powr-Web" load elements specifically designed for load banks.


• The "Powr-Web" elements are conservatively operated at half the maximum temperature rating of the alloy and features a short-circuit-safe design based on continuous mechanical support of the resistor by high temperature, ceramic clad stainless steel rods.


• "Powr-Webs" are assembled into discrete trays which are inserted into a vertical "stack." Each tray in the "stack" is independently serviceable without disturbing adjacent trays.

The load of a Resistive Load Bank consists of a dense array of open, uninsulated power resistors mounted within a cooling air stream. Since the elements are electrically live, it is possible for a foreign object to penetrate the element array and create a short circuit of adjacent elements or a short to ground.

Since the elements are densely packed, it is possible for a short circuit, once started, to rapidly propagate through the entire element array. As a Load Bank represents a relatively large amount of power concentrated within a relatively small volume, a self-propagating, cascading short circuit would have catastrophic results.

Simplex virtually eliminates the dangers of short circuit through the use of branch circuit fuse protection of the load elements. Per NEC 110-10, protective devices shall clear a fault without "extensive damage" to the circuit components.

A Simplex Load Bank is divided into branch circuits of not more than 50 KW each.