The ESP 415MT1/12.5 is a combined Type 1, 2 and 3 tested Surge Protective Device (SPD) (to BS EN 61643) for use on the main distribution board directly feeding electronic equipment such as computers, communication and control equipment, mainly where a structural Lightning Protection System (LPS) is employed.
For use at boundaries up to LPZ 0 to protect against flashover (typically the main distribution board location) through to LPZ 3 to protect sensitive electronic equipment.
Features & Benefits
- Very low let-through voltage (enhanced protection to IEC/BS EN 62305) between phase and neutral conductors, where sensitive equipment is connected.
- All mode design is capable of handling partial lightning currents and allowing continual operation of protected equipment.
- Innovative multiple thermal disconnect technology for safe disconnection from faulty or abnormal supplies (without compromising protective performance).
- Three-way visual indication of protection status and advanced pre-failure warning, so you need never be unprotected.
- A remote indication facility allows pre-failure warnings to be linked to a building management system, buzzer, or light.
- Changeover active volt-free contact enables the protector to warn of phase loss (i.e. power failure, blown fuses, etc).
- Unique flashing warning of potentially fatal neutral-to-earth supply faults (caused by incorrect earthing, wiring errors or unbalanced conditions).
- SPD base provides ultra-low inductance earth bond to metal panels.
- Convenient holes for flat mounting.
Application
- ESP 415MT1/12.5 for use with Class I or II Lightning Protection Systems LPS where there are multiple metallic services to the building or on exposed overhead three-phase power lines where no LPS is fitted.
- ESP 415MT1/12.5 is for use with Class III or IV LPS or where the LPS and service line information is unknown, so SPD impulse current Iimp cannot be calculated (minimum 12.5kA Iimp required).
Installation
- Install in parallel, within the power distribution board, either on the load side of the incoming isolator or the closest outgoing way to the incoming supply.
- Connect, with very short connecting leads, to phase(s), neutral and earth. Phase/live connecting leads should be fused with HRC fuses, a switchfuse, MCCB or type ‘C’ MCB.
Specifications
- Nominal voltage – Phase-Neutral UO (RMS) 240 V
- Maximum voltage – Phase-Neutral UC (RMS) 280 V
- Temporary Overvoltage TOV UT(1) 442 (120 mins) L-N: safe fail, 1200 V (200ms) N-E: withstand
- Short circuit withstand capability ISCCR 50 kA/50 Hz
- Working voltage (RMS) 346-484 V
- Frequency range 47-63 Hz
- Max. backup fuse (see installation instructions) ≤ 200 A
- Leakage current (to earth) < 5 μA
- Indicator circuit current < 5 mA
- Volt free contact:(2) Screw terminal
- Temperature range (7) -40 to +80 °C
- Conductor size (stranded) 25 mm2
- Earth connection Screw terminal – maximum torque 2.65Nm
- Volt-free contact Connect via screw terminal with conductor up to 1.5 mm2 (stranded) – maximum torque 0.25 Nm
- Degree of protection (IEC 60529) IP20
- Case material Steel
- Weight 1 kg
