CL2-12 L-COM | Alldatasheet
Document overview
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Technical content
Features
Dual Channel Three-Stage Protection Weather resistant enclosure Screw Terminal Blocks Available in 12V, 15V and 24V models
Description
The AL-CL2-xx series are high performance 3-stage outdoor protectors that provide superior protection of differential or common mode lines from transients and surges. These units will protect two 4-20 mA circuits. The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series resistors and the final stage is a low capacitance diode array. The use of three terminal differential gas discharge tubes provides superior common and differential mode protection against conducted transients versus the use of lower cost two terminal tubes. Th e second stage series resistance limits the power dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas tubes to flash over. The diode array clamps the leading edge of fast transients to safe lev els until the high power gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak through. The diode array’s low capacitance assures that the suppressor will not degrade the high -speed signals. The 3-stage design can handle higher-level transients than a protector that uses only diodes. For more complete surge protection of data lines, the use of two units is recommended, one at each end of the line. The compact weather resistant housing features a lockable hinged cover and mounting holes are provided on the rear of the enclosure for mounting. The two cable grommets may be adjusted to cable size and are removable.
L-com, Inc. 50 High St., West Mill, 3rd Floor, Suite #30 North Andover, MA 01845 www.L-com.com E-mail: sales@L-com.com Phone: 1-800-343-1455 Fax: 1-978-689-9484 © L-com, Inc. All Rights Reserved. L-com Global Connectivity and the L-com logo are registered marks. Specifications Mechanical Specifications – All Models Enclosure Material Polycarbonate Enclosure Color Gray Grounding Lug (2) 12 AWG Max. Operating Temperature -40 C (-40 F) to +80 C (+176 F) Weight .40 lb. (.18 kg) Dimensions 4.75 x 4.06 x 2.81 (inches) 120.6 x 103.1 x 71.3 (mm) RoHS Compliant Yes Electrical Specifications Models AL-CL2-12 AL-CL2-15 AL-CL2-24 Connectors (2) Screw Terminal Blocks Stage 1 Clamping Voltage ± 90 volts Stage 2 Resistance 3.3 Ohms Stage 3 Clamping Voltage ± 15 volts ± 18 volts ± 28 volts