Over- and Undercurrent Relay
SP 9277

The overcurrent and undercurrent relays of the VARIMETER series are suitable for monitoring currents in three-phase and alternating current networks. If the current exceeds or falls below the switching point, the relays change state after the time has elapsed. The relays can be used universally thanks to the adjustable switching point. The adjustable time delay can be used to take current peaks into account or to suppress them if necessary. Operational readiness and over- or undercurrent are indicated by an LED.

Advantages
. Detects over- and undercurrent
. With built in current transformer for 0.5 ... 100 A
. IL 9277, SL 9277 with 4 programmable ranges
. Separate setting for over- and undercurrent
. Settable time delay
. IP 9277, SP 9277 with separate settable time delay for over- and undercurrent
. De-energized on trip (output relay not activated in case of error)
. Auxiliary supply and measuring input galvanic separated
. IL 9277, SL 9277 with one output relay for over- and undercurrent
. IP 9277, SP 9277 with separate output relays for over- and undercurrent

Features
. According to IEC/EN 60255-1
. IP 9277, SP 9277, SP 9277CT: 3-phase
IL 9277, SL 9277, SL 9277CT: Single phase
. Measuring ranges from AC 0.1 ... 15 A
. Settable 0.1 ... 1 IN
. Fixed hysteresis approx. 4 %
. LED indicators for over-, under- and normal current
. Optionally energized on trip (output relay activated in case of error)
. Devices available in 2 enclosure versions:
- I-model, e.g. IL _ _ _ _, depth 61 mm with terminals at the bottom for installations systems and industrial distribution systems according to DIN 43880
- S-model, e.g. SL _ _ _ _, depth 100 mm with terminals at the top for cabinets with mounting plate and cable duct
. DIN rail or screw mounting
. IL 9277, SL 9277, SL 9277CT: 35 mm width
IP 9277, SP 9277, SP 9277CT: 70 mm width

Technical specifications
Width: 70mm
Operate delay: Yes
Enclosure design: Switch cabinet
1- / 3-phase: 3
Output contacts: 2 x 2 C/O contacts
Auxiliary voltage: AC, AC/DC
Type: SP 9277
Measuring range: AC 0,1 - 15A


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: SP9277.39/002 AC220-240V 0,5-5A
Art. No.: 0050763