ERICO TDS150-1SR Series User manual
INSTRUCTION SHEET
DANGER
ELECTRICAL SHOCK OR BURN HAZARD. HAZARDOUS VOLTAGES EXIST INTERNAL TO THE TDX. THIS
UNIT SHOULD BE INSTALLED AND SERVICED ONLY BY QUALIFIED PERSONNEL IN CONFORMANCE
WITH ALL GOVERNING CODES AND INSTRUCTIONS. FAILURE TO LOCKOUT ELECTRICAL POWER DURING INSTALLATION OR MAINTENANCE CAN RESULT IN FATAL ELECTROCUTION, SEVERE BURNS,
OR OTHER INJURIES. BEFORE WORKING WITH OR MAKING ANY CONNECTIONS TO THIS DEVICE, BE SURE THAT POWER HAS BEEN REMOVED FROM ALL ASSOCIATED WIRING, ELECTRICAL PANELS,
AND OTHER ELECTRICAL EQUIPMENT.
1. The power supply to the TDX should always be turned (and locked) OFF before the unit is accessed for any reason.
2. Prior to installation, ensure that the TDXis of the correct voltage, current, phasing, and frequency for the applicable rating of the power distribution system.
3. This unit must be installed on the load side of the main over-current protection.
4. Diagrams are for reference only. Schematics are representative of typical applications and are only to be used for reference.
WARNING
1. ERICO products shall be installed and used only as indicated in ERICO product instruction sheets and training materials. Instruction sheets are available at www.erico.com and from your ERICO customer service representative.
2. ERICO products must never be used for a purpose other than the purpose for which they were designed or in a manner that exceeds specified load ratings.
3. All instructions must be completely followed to ensure proper and safe installation and performance.
4. Improper installation, misuse, misapplication or other failure to completely follow ERICO’s instructions and warnings may cause product malfunction, property damage, serious bodily injury and death.
SAFETY INSTRUCTIONS: All governing codes and regulations and those required by the job site must be observed. Always use appropriate safety equipment such as eye protection, hard hat, and gloves as appropriate to the application.
Copyright2005 ERICO International Corporation. All rights reserved.
CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH and LENTON are registered trademarks of ERICO International Corporation
TECHNICAL SUPPORT: IPCR1502 REV. 5 1of 2IPCR1502_5.DOC
www.erico.com 11/7/2005 ESN12623
1. PREPARATION
DANGER:
Electrical shock or burn hazard. Qualified personnel
should only install this product. Failure to lockout electrical power
during installation or maintenance can result in fatal electrocution or
severe burns. Before making any connections to this electrical
panel please ensure that power has been removed from all
associated wiring, electrical panels, and other electrical equipment.
CAUTION NOTES:
1. The installation of this Transient Discriminating Surge Diverter
(TDS) should follow all applicable national electrical codes.
2. Check to ensure that the power frequency line voltage does
not exceed the maximum continuous operating voltage (Uc) of
the TDS.
3. Prior to installation, ensure that the TDS is of the correct
voltage, current, and frequency.
4. The ground (earth) terminal must be connected to a low
impedance earth (<10 ohms) for correct operation.
5. Do not perform a “Flash Test” or use a Megger to test circuits
that are protected with these TDS units. This may damage the
TDS(s) and affect the insulation readings being performed.
6. Follow all instructions to ensure correct and safe operation and
observe nationally recognized codes of authorities having
jurisdiction.
7. Do not attempt to open or tamper with the TDS unit in any way
as this may compromise performance and will void warranty.
2. INTRODUCTION
The Transient Discriminating Surge Diverter (TDS) series has been
designed to provide one mode of protection to single-phase power
distribution systems (TDS150 or TDS1100), multi-modes in a split
phase distribution system (TDS50) or in a three-phase distribution
system (TDS350). Units can be connected (L-N), (L-G) or (N-G)
depending on the type of power distribution system.
Multiple TDS units can be used to provide multi-modes of
protection or to protect three-phase distribution systems.
TDS units are available with maximum continuous operating
voltages (Uc) of: 170V, 275V, 320V and 610V for the protection of
distribution systems with nominal RMS voltages of 120Vac,
220Vac, 240Vac and 480Vac, respectively. TDS units may also be
used to protect DC power systems –ref. Table 1.
3. QUICK INSTALLATION OVERVIEW
Please follow the sequence indicated:
1.
First, ensure that power is removed from the area and the
circuits to be connected.
2.
Install earth leakage protection (RCD) if appropriate or where
required by national codes and authorities having jurisdiction.
Note: When connecting surge protection L-
G it is preferable to
install the device before the RCD to avoid “nu
isance tripping”
which may occur when the SPD operates.
3. Connect wiring to the two primary terminals indicated.
4. Connect the alarm terminals if remote monitoring is required.
5.
Apply power and observe correct operation of the TDS and
status indication is not tripped.
4. MOUNTING
TDS’s are designed to clip to 35mm (top hat) DIN rails (standard
EN50022) set in the horizontal position with the TDS securing clips
towards the bottom of the rail and the label text facing the correct
way up.
NOTE: TDS modules must be installed in an enclosure or switch
board panel in such a way that :
PRODUCT SERIES
TDS150-1SR-xxx
TDS1100-1SR-xxx
TDS350-xxx-xxx
TDS50 120/240
INSTRUCTION SHEET
TECHNICAL SUPPORT: IPCR1502 REV. 5 2of 2IPCR1502_5.DOC
www.erico.com ESN12623
§The location of this enclosure prevents the temperature of the
TDS unit(s) from exceeding its maximum specified rating.
§Adequate electrical and safety protection is provided by the
enclosure to all exposed terminals.
§The location and type of enclosure meets the specified
environmental requirements and prevents the ingress of
moisture and water.
§The indicator status of the TDS can be readily inspected.
5. ELECTRICAL CONNECTION
When connecting the TDS on the input side of the distribution panel
wiring, it is usual to wire the TDS L
-N (L1, L2, L3 to N on 3 phase
systems). When connecting the TDS to the output side of the panel
wiring, it is usual to wire it L
-PE/PEN.
§On TN-C networks, three TDS units are required. L1, L2, L3
should be protected to PEN.
§On TN-S networks, four TDS units are required. L1, L2, L3
should be protected to N, and N should be protected to PE.
§On TT networks, three TDS units and a SGD unit are required.
L1, L2, L3 should be protected to N using the TDS units, and N
should be protected to PE using the SGD unit.
§On IT networks, four TDS units are required. L1, L2, L3, N
should be protected to PE using 440V TDS units on a normal
230V system.
§On the TDS1100 series, a “Kelvin” type connection can be
made using separate input and output terminal pairs. This
configuration helps reduce the effects of lead length. The
maximum load current under such a configuration should be
limited to 125A.
6. WIRING
The interconnecting wiring should:
§Be as short as possible -not exceeding 300mm (12”).
§Avoid sharp bends >100mm radius is recommended.
§Have the conductors twisted together where possible.
§Terminals will allow connection of 25mm² (#4AWG) multi-
strand wiring or 35mm² (#2AWG) solid –ref. Table 1. The wire
insulation should be stripped back 8mm (5/16").
7. RESIDUAL CURRENT DETECTORS (RCD)
When an RCD is used, it is preferable that the TDS modules be
installed prior to (upstream of) this device to avoid nuisance tripping
which may
occur during transient activity.
8. FUSING AND ISOLATION
Overcurrent protection must be installed in the upstream circuit of
every TDS unit if the mains supply is > 100A. This is to provide
protection to the TDS, the load and the wiring in the case of a fault
–ref. Table 1 for suitable fuse ratings.
NOTE: Operation of this over-current protection under excessive
surge conditions may occur removing protection from the circuit.
The Remote Status contacts should be monitored for this
possibility.
9. STATUS INDICATION
TDS modules incorporate an internal thermal disconnect element,
which automatically disconnects the varistor from the network in the
event of a thermal overload. Should the internal disconnect
operate, a red flag appears in the transparent wind
ow of the Status
Indicator(s) on the front of the TDS.
10. MAINTENANCE & TESTING
Before removing a TDS module from service, ensure that the power
has been removed and if possible “locked out”. Qualified personnel
should only undertake replacement of TDS modules. Replacement
plug-in modules are available.
NOTE: It is very important to ensure that the new module is of the
same type and voltage as that being replaced.
NOTE: TDS units should be inspected periodically, and also
following any periods of lightni
ng or transient voltage activity. Check
the Status Indicator and replace the module if required.
11. REMOTE STATUS
The TDS provides remote status monitoring via voltage-free
contacts. Failure of the TDS is signified by the N/C contacts (11,14)
opening and the N/O contacts (11,12) closing. Ensure that the
voltage and current ratings of the contacts are not exceeded.
NOTE:The TDS contacts are
independent of whether power is
supplied, or not, to the TDS module. The status of the
contacts is given solely by the failure status of the TDS
module.
Table 1. TDS operating specifications
Max. continuous operating
voltage, Uc (AC) 170, 275, 320, 610 Vac
(Important: ensure correct TDS is
selected, Uc must be higher than
power frequency voltage).
Max Torque 4.5N.m./40in-lbs
Main terminals –wire cross
section / backup fuse multi-strand 25 mm2 (#4AWG)
(single-strand 35 mm2(#2AWG)) /
max. 125 AgL
Remote status contacts 0.5 A / 250 VAC; 3 A / 125 VAC
1.5 mm2wire cross section
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