BTS POWERSAFE
Using the Belotti “BTS POWERSAFE” solution your AC
Connected units, such as rectifiers, Inverter and air
condition units, will continue operating even during
extreme mains voltage variation without need for the
back-up generator to switch-on and, furthermore, thanks
to the Galvanic Isolation provided by the Isolation
transformer all the site will be totally protected from any
Mains “problem” as well as protected from surges and
spikes by our three poles Surge Protection.
Working hours of back-up generators will dramatically
decrease.
Our Solution for Telecom is the result of the experience
we gained in years of operation all over Africa working in
partnership with the most important Telecom companies
allowing our product to meet their stringent requirements
in spite of the environmental difficulties.
The solution briefly is the integration of three of our
products:
A) Belotti Voltage Stabiliser (AVR)
B) Belotti Ultra-Isolation transformer
C) Belotti Surge Protection (TVSS)
A Large voltage variations can be harmful to many ACunits, causing temporary or definite shut down and
By-passing the Loads to the Back-Up Generator.
Wit the Belotti Stabiliser it is not just possible to
protect your connected units, but you will maintain full
operation!
B Ultra-Isolation Transformer D/Y (Dyn11) guarantee the
Best electrical Protection and noise filtering for your
BTS.
Belotti transformer design gives:
• Galvanic Isolation and screen Pri/Sec
• Increased Voltage Phase Equilibration
• Generation of new, clean Neutral at Secondary
avoiding all problems caused by the mains neutral.
Clean neutral is essential for the correct operation of
Single-phase loads.
C Belotti Surge Protection Module SLP class C
connected at the Mains entrance with its high
discharge Power (40kA 8/20 µs) and low residual
Voltage is completing the protection of the installation.
Higher Discharge Modules or combined (B+C)
Modules are available for special locations.
• Components can be supplied also separately.
• We can customize our “BTS POWERSAFE” to meet
your needs and requirement.
• Designed and Manufactured in Italy
MAINS FEATURES:
Wide voltage regulation range : 160-290V(Phase-N)
10 to 200kVA, three-phase 400/230V or 208/120V
50/60Hz
3 to 200kVA single phase and three/mono
Indoor IP21construction (Rack 19’’ space save)
or Outdoor IP54 construction (Fibreglass).
- Emergency By-pass
- Customized project
IP54 FIBERGLASS OUTDOOR
CASE - FAN ASSISTED
IP21 HEAVY METAL INDOOR
CASE – SMALL FOOTPRINT
A
VOLTAGE STABILISER (AVR) WIDE INPUT
WINDOW
C
SURGE PROTECTION
B
ULTRA ISOLATION TRANSFORMER
The Belotti BTS Powersafe is supplied in three different configurations in order to satisfy the different
Telecom requirements.
The Standard Input window is +/-25%
The Standard Output stability is +/-1%
✔ THREE-PHASE (BTS POWERSAFE 3/3) Indoor or Outdoor
✔ SINGLE-PHASE (BTS POWERSAFE 1/1) Indoor or Outdoor
✔ THREE-MONO (BTS POWERSAFE 3/1) Indoor or Outdoor
Input Three-phase/ Output single-phase
Isolation Transformer
Surge protection class C
Voltage Monitory Relay
Fast Response
Customized Input window
TB
R
IN P U T
SINGLE-PHASE MODEL
ISO
U
AT
M
CC
V
S
SINGLE PHASE WIRING DIAGRAM
THREE-PHASE MODEL
WITH INDEPENDENT REGULATION
ON EACH PHASE
THREE-MONO MODEL
is the latest version implemented to satisfy
the needs of some of our client affected by phase
missing problem during operation.
It can guarantee supply (single-phase)
to the BTS even when one or two phases
are missing thanks to the Belotti patented
Voltage PHASE SELECTOR.
S T A B IL IS E D
OUTPUT
Common features:
TB
AT
CC
M
ISO
BOOSTER TRANSFORMER
VARIABLE AUTOTRANSFORMER
SOLID STATE CONTROL CIRCUIT
SERVOMOTOR
INSULATION TRANSFORMER
A) SERVO-MECHANICAL
VOLTAGE STABILISER (AVR)
Independent control on each phase that guarantee +/-1% stability (Phase-N).
Servo Mechanical design has low maintenance and fast response (70V/sec).
B) ULTRA ISOTRANSFORMER
Belotti Ultra-Isolation Transformers guarantee
the best Mains Input protection and noise filtering at BTS Powersafe Input.
FEATURES:
Galvanic Isolation Primary / Secondary
Isolating Screen
Dyn11 Design giving Phase Equilibration and Creation
of a New Neutral
Noise Filtration
C) SURGE PROTECTION SLP
• The SLP-275 V/3 three pole
arrester guarantee the protection
of low-voltage network and
connected appliances against
surge voltage induced with a
lightning strike, against surge
voltage from manipulations and
failures in high-voltage networks,
and against industrial surge
voltage (arrester of class II ©
IEC 61643-1 (DIN VDE 0675-6).
SLP-275V/3
SPD type 2-surge arrester Replaceable varistor module,
visual fault signalling
TECHNICAL DATA
SLP-275 V/3
Nominal Voltage
Un
230V AC
Maximum operating Voltage
Uc
275V AC/350V DC
Nominal Discharge current (8/20 µs)/pole
in
20 kA
Maximum Discharge current (8/20 µs)/pole
lmax
40 kA
Voltage Protection Level @ l = 5k A (8/20 µs) Up
0,9 kV
Voltage Protection Level
Up
1,2 kV
Response Time
ta
25 ns
Short-circuit proof at maximum overcurrent protection
Maximum overcurrent protection
Degree of Protection
Range of Operating Temperatures
Mounting on
Fault Indication
Meets the requirements of Standard
35 kA
160 A gL/gG
IP 20
-40°C +80°C
DIN rail 35 mm
Red Indication Field
EN 61643-11 +A11
Stabilisers AVR for Telecom
BST powersafe
BST powersafe PWM
BTS powersafe EB
Stabilisers AVR
Servo mechanical BST
Electronic BST- EB
Variable autotransformers
El Core transformers
20135 MILANO - ITALY - P.ZA TRENTO, 6 - PHONE +39.02.58306849-58306732-58308956 - FAX +39.02.58304722
E-mail: belotti@belotti.it - http://www.belotti.it