MADURAI SAI ENGINEERING COMPANY Simmakkal, Madurai, Tamil Nadu

Trip Circuit Supervision Relay - is an electronic circuit based relay which is used to monitor and supervise the integrity of Circuit breakers trip coil and other wiring circuits of low-voltage and medium-voltage network. Trip Circuit supervision relay is connected with a circuit breaker to monitor the trip circuit positions (Open or closed). Trip Circuit Supervision Relay generates a trip circuit failure alarm, either if the trip circuit supply is disconnected or if the trip circuit connection is changed to an open circuit. Trip circuit continuity is measured by supplying the supervision current of 0.7 mA to 1.5 mA and sensing the flow of current with two opto-couplers. The circuit breaker contact indicates the status of relay whether the circuit breaker is in open position or closed position. The front panel of Trip Circuit Supervision Relay comprises of single LED with dual colored to indicate the status of process. In a healthy condition, the Green LED flashes and the output relay reaches the pick-up condition. In the fault condition, the Red LED flashes and the output relay reaches the drop-off condition and operates after a delay of 500 ms. The salient features of Trip Circuit Supervision Relay are: Universal auxiliary voltage range with very low burden (i.e.) 24 V to 230 V AC/DC at less than 4 watts Universal supervision voltage range (i.e.) 24 V to 230 V DC Compact-in-size 48x96 mm Fitted with flush-mounting Continuous supervision of trip circuit in Pre-closed, Post-closed condition, and latched trip condition Detects faults such as Auxiliary voltage loss and circuit breakage in supervised circuits Indicates operational status by single LED with dual color Relay has been type tested in accordance with IEC60255 standards

High speed monobloc pump Head range : Upto 76 metres Discharge range : Upto 49 LPS Power Rating : (0.37 - 22)kW (0.5 - 30)HP Voltage Range : 300 - 440 V (3 Ph)

Protection : IP 21 Enclosure : IC 01 Ambient : 0 to 50°C Rating : 15 - 135 kW Frame Size : 180 - 280

Mounting : IM1001 Enclosure : IC411 Ambient : 0 to 50°C Gas Group : I, IIA, IIB, IIC Hazardous Area : Zone I, Zone II Rating : 0.12 - 180 kW Frame : 63 - 315

Rating (Cage) : 0.37 - 45 kW Rating (Wound motor) : 1.5 - 75 kW Frame (Cage) : 71 - 225 Frame (Wound Motor) : 100 - 280 Ambient : 0 - 50°C IP / IC : 55 / 411

The wide range of applications for Sonar-BERO ultrasonic sensors is limited only by the designer’s imagination: Level and height sensing , Distance measurement ,Winding diameter detection, Bottle counting and much more The wide range of applications for Sonar-BERO ultrasonic sensors is limited only by the designer’s imagination: Level and height sensing Distance measurement Winding diameter detection Bottle counting and much more

SIMOCODE-DP is a tried and tested system: Increasingly, the communicationscapable SIMOCODE-DP 3UF5 motor protection and control device is being successfully used worldwide in lowvoltage switchgear systems. Increasingly, the communicationscapable SIMOCODE-DP 3UF5 motor protection and control device is being successfully used worldwide in lowvoltage switchgear systems. It represents the intelligent link between the motor feeder and the process control system. The fact that this state-of-the-art technology is being increasingly used reflects the requirement for increased plant availability but at the same time, cost savings during the onstruction and commissioning of a plant and its operation. This places a wide range of requirements on such an intelligent field device.

The 4 pole contactors type 3RT13 and 3RT15 are specially designed to meet specific applications. These contactors are highly reliable, user friendly and meets the expectation of world class Siemens products. They conform to the latest IEC60947-4-1 standard and carry CE marking. Siemens offers range of contactors for industrial usage and ready-to-use contactor assemblies Capacitor Duty Contactors 3TF3/3RT16 capacitor contactors are used to switch power capacitors that are utilized for reactive current compensation. Special series resistors and auxiliary contacts, integrated in the capacitor contactor, reduce the high inrush current of the capacitor which would otherwise flow. This reduced inrush current guarantees a high contactor and capacitor enhanced life. These contactors are available in sizes S00, S0 and S3 and can generally be equipped with the standard accessories of the basic devices. Power Contactors for Switching Motors With a wide range of power contactors for switching motors, Siemens offers contactors for different applications - up to 250 kW. In sizes S00 to S12, in addition to 3-pole standard contactors, one can opt for vacuum contactors, coupling relays for optimal interfacing with the outputs of controllers, and various different 4-pole power relays and miniature contactors for the performance range up to 4 kW. Special Contactors for Special Applications Single-phase 3TK5* and 3RT14* AC contactors can now be used, for example, for switching heating circuits up to 690 A. The 4-pole 3RT13 contactor is ideal for implementation in changeover circuit with isolation of neutral conductor. The contactor range also includes 3TF3* capacitor duty contactors for reactive current compensation with power capacitors. The range also includes Hoisting duty contactors and 2 Pole DC contactor. Benefits: Compliance with major international standards Widest range of contactors for almost all the application Reliable and widely used in industry Pole Contactors 4NO AC1 duty power contactors upto 140A can be used as incomer in a source change over system. 2NO+2NC AC1 duty power contactors upto 55A is suitable for changing the polarity of the hoisting gear motors and switching of two separate loads. Benefits High Mechanical and Electrical life High performance and reliability User friendly and safe to operate Facility to add on auxiliary contact blocks Wide range of site fittable accessories Suitable for both screw mounting and DIN rail Contactors for Resistive loads Contactor range on one hand consists of SICOP 3TF motor contactors, which can be used to switch inductive loads, e.g. according to utilization categories AC-2/AC-3 and AC-4 and also to switch resistive loads according AC-1. On the other hand, the special 3TK5/3RT14 AC-1 contactors with 3 NO main contacts offers a cost-effective alternatives for rated operating currents greater than 100 A and up to 690 A. These AC-1 contactors are especially optimized to switch loads according to utilization category AC-1. Benefits:s Specially designed for AC-1 loads hence economical then AC-3 load contactors. Can be used with almost all type of resistive loads. Compliance with all major international standards.

Power : 10 HP

Speed : 1500 RPM

Phase : Three Phase

Head range : Upto 34 metres Discharge range : Upto 77 LPS Power Rating : (0.75 - 18.7)kW (1 - 25)HP Motor Coupled (4.0 - 19.5)kW (6 - 26)HP Engine Coupled  

Duty : S1, S3 80% & above CDF Insulation : Class F Protection : IP 55 Cooling : IC 411 Frame : 63 - 315

Benefits Wide range:Single source for, SDFs, open upto 800 A SDFs, in SS enclosure upto 630 A SDs, open upto 1600 A No movement of fuses Prevents loosening of fuses; hence reliable short circuit protection. Suitable for knife blade fuses Reduced down time for fuse inspection/replacement. Double break feature: Isolates the fuses at both the ends. Thus total protection to operating personnel. Benefits Wide range:Single source for, SDFs, open upto 800 A SDFs, in SS enclosure upto 630 A SDs, open upto 1600 A No movement of fuses Prevents loosening of fuses; hence reliable short circuit protection. Suitable for knife blade fuses Reduced down time for fuse inspection/replacement. Double break feature: Isolates the fuses at both the ends. Thus total protection to operating personnel.

Material of Construction Impeller : Cast Iron Delivery Casing : Cast Iron Motor Body : MS Shaft : Stainless Steel

Head : 9 – 1502 metres

Power Rating : (2.2 - 15.0)kW (3.0 - 20.0)HP

A motor Starter has two basic functions to perform: 1) Starting and stopping the motor. 2) Providing adequate protection to the motor and safeguarding it in the event of sustained overloads, single phasing, locked rotor conditions and undervoltage. Siemens makes a wide variety and range of Starters suitable for various applications. However, for small general purpose motor feeders motor Starter has two basic functions to perform: Starting and stopping the motor. Providing adequate protection to the motor and safeguarding it in the event of sustained overloads, single phasing, locked rotor conditions and undervoltage. Siemens makes a wide variety and range of Starters suitable for various applications. However, for small general purpose motor feeders

MCB: The Siemens Miniguard MCB Protects wires and Cables Automatically Against Overload and Short Circuit in Domestic, Commercial and Industrial Installations. The 5 SQ2, 3 KA MCB is available in a Comprehensive range from 0.5 to 63 A in 1,2,3 and 4 Pole version. Miniature Circuit Breaker (MCB): The Siemens Miniguard Miniature Circuit Breaker (MCB) Protects wires and Cables Automatically Against Overload and Short Circuit in Domestic, Commercial and Industrial Installations. The common idea behind a miniature circuit breaker is to make a switch that will mechanically turn itself off if overmuch current flows through it. The 5 SQ2, 3 KA miniature circuit breakers (mcb) is available in a Comprehensive range from 0.5 to 63 A in 1,2,3 and 4 Pole version.

The Siemens low voltage HRC fuses of BS type design have been developed for industrial applications. Due to the special design, they give high rupturing capacity combined with low temperature rise under normal load conditions. The Siemens low voltage HRC fuses of BS type design have been developed for industrial applications. Due to the special design, they give high rupturing capacity combined with low temperature rise under normal load conditions. The quick acting characteristics of the fuses ensure that under the worst fault conditions, cut-off occurs before the maximum value of fault current is reached, thus reducing the electro-magnetic stresses and fire risk.

The technical and descriptive information on the function, construction and selection of the new types of 3SE3 limit switches is presented here. These limit switches are actuated by straight edges, cams, stops or plates etc. The technical and descriptive information on the function, construction and selection of the new types of 3SE3 limit switches is presented here. These limit switches are actuated by straight edges, cams, stops or plates etc. and give control commands for the further progress of the switching program or of the manufacturing/processing squence. For the various control applications there are 2 ranges available, namely open type and metal enclosed limit switches with 3 different versions of contact configuration.

Material of Construction Supply : Std. Housing : Cast Iron Stainer : Cast Iron Flap : Rubber Range Size : 50mm to 150mm      

Fire Fighting monobloc pump Head range : Upto 52 metres Discharge range : Upto 31 LPS Power Rating : (2.2 - 15)kW (3 - 20)HP Voltage Range : 300 - 440 V (3 Ph)

Material of Construction Impeller : Cast Iron Delivery Casing : Cast Iron Shaft : Carbon Steel

Distribution Board: Siemens Miniguard Distribution board provides and Commercial Applications. The Range offers a Choice of Incoming devices via Isolators, MCBs or RCCBs and a Choice of Enclosures from four way to twelve way in Single and Double Door Design. Distribution Board: Siemens Miniguard Distribution board provides and Commercial Applications. The Range offers a Choice of Incoming devices via Isolators, MCBs or RCCBs and a Choice of Enclosures from four way to twelve way in Single and Double Door Design.

SIKOSTART 3RW24 digital electronic motor controllers (SOFTDRIVE) are multifunctional electronic system to provide smooth acceleration, eceleration and a controlled level of starting current for use with three phase asynchronous motors. SIKOSTART 3RW24 digital electronic motor controllers (SOFTDRIVE) are multifunctional electronic system to provide smooth acceleration, eceleration and a controlled level of starting current for use with three phase asynchronous motors. Apart from its basic functions, it also is equipped to protect the motor under various fault conditions. With its advanced start & stop modes, extensive protections and improved fault diagnostics; the controller has the maximum flexibility to suit any kind of load requirement. The SIKOSTART range of digital controllers utilize 6 thyristors, each phase has two thyristors in antiparallel configuration. By varying the thyristor conduction period, the voltage applied to the motor and hence the motor starting torque, are controlled. Two versions are available viz. Line connection (3-wire system) and Inside Delta connection (6-wire system).

The switches can be supplied in open execution or in sheet steel enclosure. The switches are known for their versatile design, high making and breaking capacity, long mechanical and contact life and the many safety features that are provided. The switches can be supplied in open execution or in sheet steel enclosure. The switches are known for their versatile design, high making and breaking capacity, long mechanical and contact life and the many safety features that are provided. Construction The 3LAO switches are available in size 2 for 25 Amps. and size 6 for 63 Amps. They are made up of uniform switching packets assembled to form a stack. Each packet consists of 2 sets of contacts whose moving contacts are operated by moulded plastic cams when the operating shaft is turned. The stacking of similar packets renders it possible to build switches for practically all types of small drives, offering at the same time a uniform appearance. This and their compactness make them ideal for installation on machine tools.

The bimetal overload relays type 3UA5/6 & 3UC5/6 relays are indigenously manufactured and bring to the users a whole range of benefits, which are a direct result of extensive R & D efforts in design, materials and manufacturing technology. They also incorporate additional features/benefits as a result of feedback from the users of our 3UA19 relays. The bimetal overload relays type 3UA5/6 & 3UC5/6 relays are indigenously manufactured and bring to the users a whole range of benefits, which are a direct result of extensive R & D efforts in design, materials and manufacturing technology. They also incorporate additional features/benefits as a result of feedback from the users of our 3UA19 relays.