Stelmec Bandra West, Mumbai, Maharashtra

Virtually maintenance free, High availability through spring charge spring operated mechanism, Single unit - easy to transport & ready to install, Simple & safe to operate, Modular construction for ease to maintain, Compact & rugged design for outdoor application, Well proven vacuum interrupters for switching functions, Long electrical & mechanical life, Adequate ground & sectional clearances as required, Suitable for rapid auto-reclosing duty

The Stelmec make Master Trip Relay SLR JH13 is an Electromechanical High Speed Tripping Relay used in tripping and signaling circuits of protective relays, where a high degree of reliability & high contact rating is required. It is an instantaneous switching element that is used for Contact multiplication of Protection relays of Circuit Breakers, thereby providing number of simultaneous instantaneous switching operations.

Front Bezel : 152×92 mm

We offer an array of MV (Medium Voltage) switchgears that suit all medium voltage applications. The main task of medium-voltage switchgear is cost-efficiency, safe & reliable power distribution. And, this is a responsibility we accept. Our array of MV switchgears caters to a wide range of medium voltage applications such as utility substations, power plants, cement plants, metal plants, solar applications, wind farm projects etc. By taking an innovative approach, our products offer tangible advantages such as lower capital expenditure, longer life cycle, lower life cycle cost and a reduced environmental impact. Along with our LV (Low Voltage) switchgears & other range of products, we enable the realisation of smart grids thus laying the foundation for smarter energy efficient buildings, infrastructure and for greener cities. Our range of MV switchgears includes Indoor Draw out Fixed type, Outdoor type Porcelain Clad Vaccum Circuit Breaker.

Compact, sturdy with an adaptable design, Maintenance free & high reliability, Long electrical and mechanical life, Compatible for remote and SCADA operations.

This type of relay is used to supervise the DC supply. The relay coil terminals 1 & 2 are connected to the DC supply, which is to be monitored. In case, the DC auxiliary supply is available, the relay’s ‘NO’ contact closes and healthy status is indicated through ‘WHITE’ flag. In the absence of the DC auxiliary supply, the same is indicated through ‘RED’ flag.

Our wide area network helps us in delivering the products across Maharashtra(India) and other markets. Advanced transportation facilities, efficient workforce, on time delivery of the products make us stand out from the crowd.

A fast operating, multi-contact, attracted armature relay with a high degree of mechanical stability, Type SLR AH33 has hand-reset contacts and an operating coil cut-off contact. The control coil of the relay element is wound with super enameled copper wire with a short time thermal rating since the relay has a very fast operation with operating time < 20ms. A coil cut-off contact (NC contact of same element) with suitable break rating is internally wired in series with the coil. This makes coil energization momentary & disconnects the coil on operation. The Mechanical interlock operates & Relay remains in lock out position until it is hand reset. A mechanically operated hand reset type flag, is provided as an operation indicator. White for reset position & Red for Lock out indication. The contacts are designed to have superior contact rating with minimum wear and tear. The elements are mounted in compact, non-drawout case, suitable for flush mounting on panels.

Autoreclosers can be installed in branch feeder lines in a power distribution system or in a Ring Feeder arrangement for a simple Distribution Automation system. It has been observed that about 70% of faults in a power distribution system are Transient Faults typically less than 100 milli-seconds. With an Autorecloser capable of providing up to 4 reclosing operations each operation user configurable the Autorecloser can monitor the state of the fault on every close. If the fault has been transient then supply is restored. In the case of a permanent fault the Recloser will lockout and isolate the fault. This increases reliability of supply. For the Ring Feeder arrangement they can be set to isolate the faulty section and restore supply to the maximum number of users.

Weight : 100kg, 109kg, 140kg