Description
Description
TeSys LR97D electronic overcurrent relay, 7A/690V, to be supplied with 200-240V AC, for protection of motors with a rated current 1.2-6A. It provides 3 dials to adjust the protection, LOAD (1.2-7A) for the overcurrent level, O-TIME (0.3-10sec) for the acceptable duration of the overcurrent, D-TIME (0.5-30sec) for the starting duration. In addition, the device trips when the current is higher than 3 x LOAD during more than 0.5sec in steady state and if there is a missing phase during more than 3sec. Settings also include selectors for 1-phase/3-phase motors and manual/automatic reset, the device has a reset button, a test/stop button, 2 LED indicators (Run/Trip), 2 auxiliary contacts 1NO/NC for fault signaling. Settings can be locked by sealing the transparent cover. For direct attachment to the bottom terminals of a 3-phase contactor LC1D09-D38, with screw clamp terminals on bottom, the separate mounting from the contactor is possible using the terminal block LAD7B106 (to be ordered separately). Multi-standards certified (IEC, UL, CSA, CCC, EAC), compliant RoHs/Reach.
Specifications
Range: TeSys
Product name: TeSys D
Device short name: LR97
Product or component type: Electronic overcurrent relay
Relay application: Sensitivity to phase failure
Locked rotor, mechanical jamming I > 3 x Isetting
Overload Imax > Isetting
Product compatibility: LC1D09…D38
Network type: AC
[Us] rated supply voltage: 200…240 V AC
Thermal protection adjustment range: 1.2…7 A
[Ue] rated operational voltage: 600 V AC 50/60 Hz for power circuit conforming to CSA
600 V AC 50/60 Hz for power circuit conforming to UL
690 V AC 50/60 Hz for power circuit conforming to IEC 60947-4-1
Quantity per set: Set of 10
Network frequency: 50…60 Hz
Mounting support: Direct on contactor
Rail
Tripping threshold: 1.2…6 A
Surge withstand: 6 kV conforming to IEC 61000-4-5
Contacts type and composition: 1 C/O
[Ith] conventional free air thermal current: 3 A for control circuit
Protection type: BS fuse 3 A – for control circuit
GB2 circuit breaker 3 A – for control circuit
GG fuse 3 A – for control circuit
Maximum power: 28 W at 110 V DC conforming to IEC 60947
28 W at 220 V DC conforming to IEC 60947
55 W at 24 V DC conforming to IEC 60947
55 W at 48 V DC conforming to IEC 60947
140 VA at 48 V AC conforming to IEC 60947
360 VA at 110 V AC conforming to IEC 60947
360 VA at 220 V AC conforming to IEC 60947
70 VA at 24 V AC conforming to IEC 60947
[Ui] rated insulation voltage: Power circuit: 600 V conforming to CSA
Power circuit: 600 V conforming to UL
Power circuit: 690 V conforming to IEC 60947-4-1
[Uimp] rated impulse withstand voltage: 6 kV
Phase failure sensitivity: < 3 s
Reset: Automatic reset 120 s fixed
Electrical by interruption of power supply for minimum 0.1 s
Manual reset
Time range: 0.2…10 s – O-time knob
0.3…10 s – O-time knob
0.5..30 s – D-time knob
Signalling function: 2 LEDs
Connections – terminals: Control circuit: cable 1 x 1…25 mm²flexible with cable end
Control circuit: cable 1 x 1…25 mm²flexible without cable end
Power circuit: cable 1 x 1…4 mm²flexible with cable end
Power circuit: cable 1 x 1.5…10 mm²flexible without cable end
Power circuit: lug-clamp 1 x 1…4 mm²flexible with cable end
Power circuit: lug-clamp 1 x 1.5…10 mm²flexible without cable end
Control circuit: cable 2 x 1…25 mm²flexible with cable end
Control circuit: cable 2 x 1…25 mm²flexible without cable end
Control circuit: lug-clamp 1 x 1…25 mm²flexible with cable end
Control circuit: lug-clamp 1 x 1…25 mm²flexible without cable end
Control circuit: lug-clamp 2 x 1…25 mm²flexible with cable end
Control circuit: lug-clamp 2 x 1…25 mm²flexible without cable end
Tightening torque: Control circuit: 0.6…1.2 N.m on lug-clamp
Power circuit: 2 N.m on cable
Height: 67.5 mm
Width: 45 mm
Depth: 67.5 mm
Net weight: 0.172 kg
Standards: IEC 60947
IEC 60255-6
Product certifications: GOST
CSA
UL
Protective treatment: TH conforming to IEC 60068
IP degree of protection: IP20 conforming to IEC 60529
Ambient air temperature for operation: -25…60 °C
Ambient air temperature for storage: -30…80 °C
Operating altitude: 2000 m
Fire resistance: 850 °C conforming to IEC 60695-2-1
Shock resistance: 15 gn 11 ms conforming to IEC 60068-2-7
Vibration resistance: 4 gn conforming to IEC 60068-2-6
Dielectric strength: 2 V 50 Hz conforming to IEC 60255-5
Resistance to electrostatic discharge: 6 kV in indirect mode
8 kV in air
Resistance to radiated fields: 10 V/m level 3
Resistance to fast transients: 2 kV
Disturbance radiated/conducted: 10 V conforming to EN 61000-4-6
Class A conforming to EN 55011
Warranty (in months): 18
