BTS POWERSAFEBTS POWERSAFE

Using the Belotti “BTS POWERSAFE” solution your ACConnected units, such as rectifiers, Inverter and aircondition units, will continue operating even duringextreme mains voltage variation without need for theback-up generator to switch-on and, furthermore, thanksto the Galvanic Isolation provided by the Isolationtransformer all the site will be totally protected from anyMains “problem” as well as protected from surges andspikes by our three poles Surge Protection.Working hours of back-up generators will dramaticallydecrease.Our Solution for Telecom is the result of the experiencewe gained in years of operation all over Africa working inpartnership with the most important Telecom companiesallowing our product to meet their stringent requirementsin spite of the environmental difficulties.The solution briefly is the integration of three of ourproducts:

A) Belotti Voltage Stabiliser (AVR)

B) Belotti Ultra-Isolation transformer

C) Belotti Surge Protection (TVSS)

A Large voltage variations can be harmful to many AC-units, causing temporary or definite shut down andBy-passing the Loads to the Back-Up Generator.Wit the Belotti Stabiliser it is not just possible toprotect your connected units, but you will maintain fulloperation!

B Ultra-Isolation Transformer D/Y (Dyn11) guarantee theBest electrical Protection and noise filtering for yourBTS.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 ofSingle-phase loads.

C Belotti Surge Protection Module SLP class Cconnected at the Mains entrance with its highdischarge Power (40kA 8/20 µs) and low residualVoltage 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 208/120V50/60Hz3 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 OUTDOORCASE - FAN ASSISTED

IP21 HEAVY METAL INDOORCASE – SMALL FOOTPRINT

VOLTAGE STABILISER (AVR) WIDE INPUTWINDOW

A

C

B

SURGE PROTECTION

ULTRA ISOLATION TRANSFORMER

The Belotti BTS Powersafe is supplied in three different configurations in order to satisfy the differentTelecom 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 OutdoorInput Three-phase/ Output single-phase

Common features: Isolation TransformerSurge protection class CVoltage Monitory Relay Fast Response Customized Input window

TB

AT

M CC

R

V

U

S

INP

UT

OU

TPU

T

SINGLE PHASE WIRING DIAGRAM TBATCCM

STA

BIL

ISE

D

ISO

ISO

BOOSTER TRANSFORMERVARIABLE AUTOTRANSFORMERSOLID STATE CONTROL CIRCUITSERVOMOTORINSULATION TRANSFORMER

THREE-PHASE MODELWITH INDEPENDENT REGULATIONON EACH PHASE

SINGLE-PHASE MODEL

THREE-MONO MODELis the latest version implemented to satisfythe needs of some of our client affected by phasemissing problem during operation.It can guarantee supply (single-phase)to the BTS even when one or two phasesare missing thanks to the Belotti patentedVoltage PHASE SELECTOR.

A) SERVO-MECHANICALA) SERVO-MECHANICAL VOLTAGE STABILISER (AVR) VOLTAGE STABILISER (AVR)

B) ULTRA ISOTRANSFORMERB) ULTRA ISOTRANSFORMER

C) SURGE PROTECTION SLPC) SURGE PROTECTION SLP

Belotti Ultra-Isolation Transformers guaranteethe best Mains Input protection and noise filtering at BTS Powersafe Input.

FEATURES:

Galvanic Isolation Primary / SecondaryIsolating Screen

Dyn11 Design giving Phase Equilibration and Creationof a New NeutralNoise Filtration

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 (8/20µs) Up 0,9 kV

Voltage Protection Level Up 1,2 kV

Response Time ta 25 ns

Short-circuit proof at maximum overcurrent protection 35 kA

Maximum overcurrent protection 160 A gL/gG

Degree of Protection IP 20

Range of Operating Temperatures -40°C +80°C

Mounting on DIN rail 35 mm

Fault Indication Red Indication Field

Meets the requirements of Standard EN 61643-11 +A11

• The SLP-275 V/3 three polearrester guarantee the protectionof low-voltage network andconnected appliances againstsurge voltage induced with alightning strike, against surgevoltage from manipulations andfailures in high-voltage networks,and against industrial surgevoltage (arrester of class II ©IEC 61643-1 (DIN VDE 0675-6).

Independent control on each phase that guarantee +/-1% stability (Phase-N).

Servo Mechanical design has low maintenance and fast response (70V/sec).

20135 MILANO - ITALY - P.ZA TRENTO, 6 - PHONE +39.02.58306849-58306732-58308956 - FAX +39.02.58304722E-mail: belotti@belotti.it - http://www.belotti.it

Stabilisers AVR

Servo mechanical BSTElectronic BST-EB

Stabilisers AVR for Telecom

BST powersafeBST powersafe PWMBTS powersafe EB

Variable autotransformers El Core transformers