Frequently Asked Questions 

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How can we establish a common positive (+) and negative (-) on our dual-output silver line series, SLD-12-3434-12T and SLD-15-3030-15T?

By putting a jumper from (+out) of the first output to (-out) of the second output and bonding them to ground. This will be the common point to get a positive and negative output in reference to ground.
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Is it possible to change the nominal output voltage and output frequency of our S4K2U-C UPS?Is it possible to change the nominal output voltage and output frequency of our S4K2U-C UPS?

The output voltage can be changed by using the configuration software that comes with the UPS.
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What are the functions of the dry contact relay terminals on the SDU DC power module?

The SDU DC Power Modules (SDU 10-24 and SDU 20-24) incorporate dry relay contacts for remote signaling of the battery status, provides a terminal connection for remote on/off, and a dc output 24V 35mA signal for powering the auxiliary circuit.
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What considerations should be taken when sizing a single phase power conditioner for applications?

Our single phase power conditioners (CVS, MCR Hardwired, and MCR Portable) are mainly used with electronic or resistive type of loads (i.e. PLC’s, control circuits, computers, broadcast systems, laboratory equipment, etc.).
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Do we have explosionproof three-piece couplings?

Appleton EC Series, O-Z/Gedney Type 4 and NEER Type TPC 3-piece couplings are not explosionproof.
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With the STV25K DIN mounted surge protectors, will the load lose power in case of an internal failure in the STV25K unit?

Although, the STV25K Series has input and output termination, this is a parallel connected device, so even if there is an internal failure with the unit, the load will not lose power.
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How can you create a multiple-gang switch box using several single-gang “Gangable” Steel Switch Boxes?

Gangable Steel Boxes have removable sides that allow additional boxes to be joined (ganged) together to accommodate more than one device.
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What do the terms “peak inrush current” and “exciting current” mean and how do they relate to transformers?

Exciting current is the amount of amperage a transformer draws under a no load condition. Another way to look at it is that exciting current is the transformer’s “idling” current.
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What option can we offer if the customer needs a constant voltage transformer with a tighter line regulation than ±1%?

Our standard CVS voltage regulation is ±1%. For applications requiring closer regulation, two CVS transformers may be operated in "cascade."
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Why are Buck-Boost transformers sold as isolation transformers instead of being pre-connected for specific voltage applications?

By providing buck-boost transformers as four winding isolation transformers, you get the flexibility of 24 different wiring configurations.
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