Denki Keiki Co., Ltd. SRT Series Lightning-Resistant Transformers

Manufacturer: Denki Keiki Co., Ltd.
Model: SRT Series

Features

  • High insulation is provided by the triple-layer shield.
  • Standard safety covers are equipped on the outlet model to prevent electric shock.
  • The device is designed to prevent electrical damage to surrounding equipment and can be stored in a case.
  • Due to abnormal weather conditions and urban heat island effects, localized, sudden lightning strikes have increased in recent years. It is generally stated that the lightning surge voltage on low-voltage circuits exceeds 3000V.
  • The SRT series is a transformer designed to protect electrical equipment from lightning strikes. Advanced lightning protection and surge shielding technologies are incorporated to ensure the safety of machinery by suppressing lightning surges.

Specifications

Applicable StandardsJEC-2200, JEM-1310
Usage ClassificationContinuous Rating
Ambient Temperature-20°C to 40°C (No condensation)
Number of PolesSingle
Rated Frequency50/60Hz
Rated Capacity500VA, 750VA, 1kVA, 1.5kVA, 2kVA, 3kVA, 5kVA
Rated VoltageF110-R100/100V, F220-R200/100V, F220-R200/200V
Insulation ClassH
Terminal TypeEnglish
Acceptable ProductsThree-phase type and large-capacity products, etc.
◆ Standard Model Type
◆Circuit Diagram

Item CodeModel
LA1~4Aresta
CCondenser
◆Lightning-resistant Transformer

ModelRated Capacity (VA)ABCEFGHUDKTerminal SizeWeight (kg)
SRT-505001201909226519015022010×22–M614
SRT-7575012019011226520016022010×22–M616
SRT-1001k13821011029519515522010×22320M620
SRT-1501.5k13821013529521017022010×22320M626
SRT-2002k13821015029521517522010×22320M630
SRT-3K3k13821017029522518522010×22320M636
SRT-5K5k190360145350210170220φ10360M850
◆Performance Table
ItemConditionPerformance
Voltage Variation Rate500VA ~ 2kVA≤ 4%
3kVA ~ 5kVA≤ 3%
Efficiency500VA ~ 2kVA≥ 93%
3kVA ~ 5kVA≥ 95%
Insulation ResistanceBetween terminals (500V megohms)≥ 500MΩ
Withstand Voltage TestFirst10kV for 1 minute
Second2kV for 1 minute
Impact Wave ResistanceFirst30kV (1.2/50μS)
Surge Migration RateUnbalanced≤ -40dB
Temperature RiseUnbalanced≤ 75K
NoiseUnbalanced≤ 60dB(A) at 75°C

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