The ESP 415DT1/12.5 is a combined Type 1, 2 and 3 tested protector (to BS EN 61643) for use on three-phase mains power distribution systems primarily to protect connected electronic equipment from transient overvoltages on the mains supply, e.g. computer, communications or control equipment.
For use at boundaries up to LPZ 0 to protect against flashover (typically the main distribution board location, with multiple metallic services entering) 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.
- Full 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.
Application
- ESP 415DT1/12.5 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 415DT1/12.5 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).
- A remote indication facility allows pre-failure warning to be linked to a building management system, buzzer or light.
- Changeover active volt-free contact enables the protector to be used to warn of phase loss (i.e. power failure, blown fuses, etc.).
- Flashing warning of potentially fatal neutral-to-earth supply faults (due to incorrect earthing, wiring errors or unbalanced conditions).
- Through terminal facility allows series connection on low current supplies to eliminate high additive voltage associated with connecting leads on units installed in parallel.
Installation
- Install in parallel, within the power distribution board or directly (via fuses) onto the supply feeding equipment.
- Can be installed in series for low current supplies – see installation instructions. At distribution boards, the protector can be installed either on the load side of the incoming isolator or on the closest outgoing way to the incoming supply. Connect, with very short connecting leads, to phases, neutral and earth.
Specifications
- Nominal voltage – Phase-Neutral UO (RMS) 240 V
- Maximum voltage – Phase-Neutral UC (RMS) 280 V
- Temporary Overvoltage TOV UT(1,2) 337 / 442 V (L-N), 1200 V (N-E)
- Short circuit withstand capability 25 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 < 10 mA
- Temperature range -40 to +80 °C
- Conductor size (stranded) 25 mm2
- Earth connection Screw terminal – maximum torque 4.5Nm
- 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 FR Polymer UL-94 V-0
- Weight 0.85 kg
- Dimensions to DIN 43880 – HxDxW(8) 90 mm x 88 mm x 144 mm (8TE)
