Siemens TPS3 11 Скачать руководство пользователя страница 6

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SPDs on Ungrounded Systems

Caution  –  Ungrounded  systems  are  inherently  unstable  and  can
produce excessively high line-to-ground voltages during certain fault
conditions.  During these fault conditions, any electrical equipment
including an SPD, may be subjected to voltages which exceed their
designed ratings.  This information is being provided to the user so
that an informed decision can be made before installing any electrical
equipment on an ungrounded power system.

Optional Flush Mount Installation Instructions

Caution: The chassis of the TPS3 11 unit can fall into the wall cavity
if the four screws attaching the faceplate to the chassis are removed.
Use caution not to drop the TPS3 11 unit into the wall during instal-
lation or service.

The TPS3 11 unit is approximately 4.0” deep. The unit will not mount

flush unless there is at least 3.75” of clearance. The unit is designed
to mount flush on a typical “2 x 4” stud wall with drywall.

Depending on the depth of the wall cavity, there are two installation
procedures. The preferred installation utilizes Back Flange Mounting.

The back flange supports the weight of the TPS3 unit and service
procedures are greatly simplified. If this can not be accomplished, an

alternate Front Flange Mount is possible. Please note that the front

flange installation may create servicing difficulties in the future.

Preferred Installation - Back Flange Mounting: Mount as close as
possible to the protected panel. Create a wall opening approximately
6 3/4” tall by 6 1/16” wide. See drawing. (Rotate dimensions 90

appropriate depending on orientation.) Configure an appropriate
backing plate inside the wall cavity 3 7/8” from the wall face such that

the unit will be supported from its back. Note the mounting holes on

the back flange attachments. Be careful not to drop the unit into the
wall. Configure electrical conductor and conduit connection consistent

with the installation instructions on page 5. Preplan connections such
that they are completed prior to fastening the unit to the backing
plate. Install faceplate/cover prior to energizing and testing the unit.

Alternate Installation - Front Flange Mounting: This method is not

preferred for installation as servicing is substantially more difficult.

Extra care should be taken to NOT DROP the TPS3 unit into the wall.
Mount as close as possible to the protected panel. Create a wall open-
ing approximately 6 3/4” tall by 6 1/16” wide. See drawing. (Rotate
dimensions 90

as appropriate depending on orientation.) Preplan

and pre-connect electrical conductor and conduit connections such
that they are completed prior to fastening the TPS3 unit to the wall.
Note that removing the four screws attaching the front faceplate to
the unit chassis will cause the unit to fall inside the wall.

UL 1283 required language concerning the installation of EMI Filters

a) An insulated grounding conductor that is identical in size and
insulation material and thickness to the grounded and ungrounded
circuit supply conductors, except that it is green with or without one
or more yellow stripes, is to be installed as part of the circuit that

supplies the filter. Reference should be made to Table 250-122 of

the National Electrical Code regarding the appropriate size of the
grounding conductor.

b) The grounding conductor mentioned in item a is to be grounded
to earth at the service equipment or other acceptable building
earth ground such as the building frame in the case of a high-rise
steel-frame structure.

c) Any attachment-plug receptacles in the vicinity of the filter are to

be of a grounding type, and the grounding conductors serving these
receptacles are to be connected to earth ground at the service equipment
or other acceptable building earth ground such as the building frame
in the case of a high-rise steel-frame structure.

d) Pressure terminal or pressure splicing connectors and soldering lugs

used in the installation of the filter shall be identified as being suitable

for the material of the conductors. Conductors of dissimilar metals shall
not be intermixed in a terminal or splicing connector where physical
contact occurs between dissimilar conductors unless the device is

identified for the purpose and conditions of use.

Flush Mount “F Option”

(

Preferred Installation)

Supplemental Installation Instructions

for Deep Wall Mounting

(Walls over 4” thick) Using the Enclosed Mounting Feet

Figure 3: Optional Flush Mount Installation

Step 1

Prepare Wall and SPD

Step 3

Mount the SPD