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Transformer Category:

Type / Applications:

Waterproof?

Military Standard?

Meets ANSI C12 Standards?

Meets IEC 1036 Standards?

Outdoor Use?

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General Specifications
   Transformer Category       
   Your choices are...         
   Current Transformer       Current transformers are used to step down current in a very predictable fashion with respect to current and phase. They are generally used as inputs to current instruments. 
   Voltage / Potential Transformer       Voltage transformers can be defined as transformers in which the secondary voltage is substantially proportional to the primary voltage and differs in phase from it by an angle that is approximately zero for an appropriate direction of the connections. Potential transformers are designed for monitoring single-phase and three-phase power line voltages in power metering applications. They are used primarily in a step down environment to monitor voltage. They can be used for line-to-line or line-to-neutral connections in the same manner as ordinary voltmeters. The secondary voltage bears a fixed relation with the primary voltage so that any change in potential in the primary circuit will be accurately reflected in the meters or other devices connected across the secondary terminals. Potential transformers can be used with voltmeters for voltage measurements or they can be used in combination with current transformers for wattmeter or watt-hour meter measurements. They are used also to operate protective relays and devices, and for many other applications. Since they are used in a monitoring capacity, they generally require much greater accuracy in design. Potential or voltage transformers are also used to provide accurate voltages for meters used for billing industrial customers or utility companies. 
   Other       Other unlisted transformer types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Type / Applications       
   Your choices are...         
   Commercial       The commercial class transformers are well suited for low power current monitoring applications. 
   ANSI Class       The ANSI metering class transformers are units intended for power monitoring applications where high accuracy and minimum phase angle error are required. 
   Multi-ratio       These transformers have several outputs.  Each output corresponds to a different transformer ratio. 
   Three-phase       The transformer is used in three-phase systems to measure current or voltage. 
   Split Core       Split core current transformers are designed to provide a low cost method to monitoring electrical current. A unique hinge and locking snap allows attachment without interrupting the current-carrying wire. 
   Toroidal / Window       Toroidal or donut transformers have no internal primary winding as such. The primary is the conductor in which the current is to be monitored, and is not an integral part of the transformer. The primary conductor is simply placed through the window of the current transformer. The core in this type is a band of magnetic grade steel concentrically wound upon it. This is an extremely efficient core design that has no breaks or gaps in the magnetic path. While other types of core designs may produce relative high levels of audible noise, (approximately 30-70 DB's) the toroidal core rarely produces an audible noise level. 
   Wound Primary       Wound primary current transformers have primary windings that usually consist of more that one turn.  Wound primary transformers have an internal primary winding and have no windows for the primary conductor to pass through. They have an advantage in that the designer can make units with low current ratios that therefore have better accuracy and burden capabilities. The primary of the transformer is inserted in series with the conductor that is being monitored. For this reason there is some hesitation to use wound primary transformers even though they may be the most effective way to achieve the desired performance, especially for the low current ratio requirements. The wound primary types may be designed using the toroidal cores because of its excellent efficiency. The wound primary type is more common in the higher (greater than 600V class) voltage class current transformers as it makes the problems of the higher voltages easier for the design engineer to cope with, while keeping the design as cost effective as possible. 
   Bar       Bar current transformers are toroidal transformers with a bus bar permanently inserted through the window of the toroid. The bus bar serves as the primary conductor. Bar transformers are inserted directly into the circuit that they will be used to monitor. It is a common error to refer to wound primary transformers as bar transformers because the primary connections are made to bus bars. In the wound type, bus bars are a means of connection and not continuous bars 
   PC Mount       PC mount transformers offer a small footprint for the design engineer looking to measure sensor current or voltage on a computer board. Some applications for which these transformers are used include sensing current overload, ground fault detection, metering, isolated current feed-back signal in switch mode power supplies, motor current load / overload, lighting, switch controls, ultra-sound current, high resolution sonar current and isolated bi-directional current sensor with full wave bridge. 
   Under / Over Current Sensing       Transformer used to measure under and/or over current. 
   Electronics Applications       Current or Voltage transformers used as measuring instruments in the electronics industry. 
   Noncontact Device       Noncontact current transformers can accurately measure current waveforms without coming into electrical contact with the circuit. 
   Other       Other unlisted types / applications. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Features
   Waterproof       The transformer has a waterproof case. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Military Standard       The transformer satisfies military standards or specifications (MIL-SPEC). 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Meets ANSI C12 Standards       ANSI standards for electric metering. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Meets IEC 1036 Standards       IEC electrical metering standards. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Outdoor Use       The transformer can be used outdoors. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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