Справочник Пользователя для Siemens SR200R
3
2.1 INTRODUCTION TO INSTALLATION
This equipment has been wired and tested at the
factory. Installing the switch includes the following
procedures:
factory. Installing the switch includes the following
procedures:
• Mounting the enclosure.
• Connecting power source and load leads.
• Connecting the generator start circuit.
• Connecting any auxiliary contact (if needed)
• Testing functions.
• Connecting power source and load leads.
• Connecting the generator start circuit.
• Connecting any auxiliary contact (if needed)
• Testing functions.
2.2 UNPACKING
Carefully unpack the transfer switch. Inspect closely
for any damage that might have occurred during ship-
ment. The purchaser must file with the carrier any
claims for loss or damage incurred while in transit.
for any damage that might have occurred during ship-
ment. The purchaser must file with the carrier any
claims for loss or damage incurred while in transit.
Check that all packing material is completely removed
from the switch prior to installation.
from the switch prior to installation.
2.3 MOUNTING
Mounting dimensions for the transfer switch enclo-
sure are in this manual. Enclosures are typically
wall-mounted. See the “Installation Diagram”.
sure are in this manual. Enclosures are typically
wall-mounted. See the “Installation Diagram”.
Handle transfer switches carefully when install-
ing. Do not drop the switch. Protect the switch
against impact at all times, and against construc-
tion grit and metal chips. Never install a transfer
switch that has been damaged.
against impact at all times, and against construc-
tion grit and metal chips. Never install a transfer
switch that has been damaged.
Install the transfer switch as close as possible to the
electrical loads that are to be connected to it. Mount
the switch vertically to a rigid supporting structure.
To prevent switch distortion, level all mounting
points. If necessary, use washers behind mounting
holes to level the unit.
electrical loads that are to be connected to it. Mount
the switch vertically to a rigid supporting structure.
To prevent switch distortion, level all mounting
points. If necessary, use washers behind mounting
holes to level the unit.
2.4 CONNECTING POWER SOURCE
AND LOAD LINES
DANGER
Make sure to turn OFF both the UTILITY
(NORMAL) and EMERGENCY (STANDBY) power
supplies before trying to connect power source
and load lines to the transfer switch. Supply volt-
ages are extremely high and dangerous. Contact
with such high voltage power supply lines will
result in an extremely hazardous, possibly lethal,
electrical shock.
supplies before trying to connect power source
and load lines to the transfer switch. Supply volt-
ages are extremely high and dangerous. Contact
with such high voltage power supply lines will
result in an extremely hazardous, possibly lethal,
electrical shock.
Wiring diagrams and electrical schematics are pro-
vided in this manual. Power source and load connec-
tions are made at a transfer mechanism, inside the
switch enclosure.
vided in this manual. Power source and load connec-
tions are made at a transfer mechanism, inside the
switch enclosure.
2.4.1 2-POLE MECHANISM
These switches (Figure 2.1) are used with a single-
phase system, when the single-phase NEUTRAL line
is to be connected to a Neutral Lug and is not to be
switched.
phase system, when the single-phase NEUTRAL line
is to be connected to a Neutral Lug and is not to be
switched.
Figure 2.1 — Typical 2-Pole Transfer Mechanism
(200 Amp Shown)
UTILITY
CLOSING
COIL
CLOSING
COIL
GENERATOR
CLOSING
COIL
CLOSING
COIL
UTILITY LUGS
GENERATOR
LUGS (E1 & E2)
LUGS (E1 & E2)
LOAD LUGS (T1 & T2)
Solderless, screw-type terminal lugs are standard.
Conductor sizes must be adequate to handle the
maximum current to which they will be subjected to,
based on the 75°C column of tables, charts, etc. used
to size conductors. The installation must comply fully
with all applicable codes, standards and regulations.
maximum current to which they will be subjected to,
based on the 75°C column of tables, charts, etc. used
to size conductors. The installation must comply fully
with all applicable codes, standards and regulations.
Before connecting wiring cables to terminals, remove
any surface oxides from the cable ends with a wire
brush. All power cables should enter the switch next
to transfer mechanism terminals. If ALUMINUM con-
ductors are used, apply corrosion inhibitor to con-
ductors. Tighten terminal lugs to the torque values as
noted on the decal located on the inside of the door.
After tightening terminal lugs, carefully wipe away
any excess corrosion inhibitor.
any surface oxides from the cable ends with a wire
brush. All power cables should enter the switch next
to transfer mechanism terminals. If ALUMINUM con-
ductors are used, apply corrosion inhibitor to con-
ductors. Tighten terminal lugs to the torque values as
noted on the decal located on the inside of the door.
After tightening terminal lugs, carefully wipe away
any excess corrosion inhibitor.
All power cables should enter the switch next to the
transfer mechanism terminals.
transfer mechanism terminals.
Use a torque wrench to tighten the conductors,
being sure not to over tighten, or damage to the
switch base could occur. If not tightened enough,
a loose connection would result, causing excess
heat which could damage the switch base.
switch base could occur. If not tightened enough,
a loose connection would result, causing excess
heat which could damage the switch base.
Section 2 — Installation
“HS” Type Transfer Switch
Switch Wire Conductor
Tightening
Rating
Range
Torque
100A
#14-1/0
AWG
50
in-lbs.
200A
#6-250 MCM
275 in-lbs.